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UNDERWRITING AGREEMENT

Underwriting Agreement

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This Underwriting Agreement involves

GRANITE FINANCE TRUSTEES LTD | NORTHERN ROCK PLC | GRANITE FINANCE FUNDING 2 LIMITED | DEUTSCHE BANK SECURITIES INC | LEHMAN BROTHERS INC | BARCLAYS CAPITAL INC | J. P. MORGAN SECURITIES INC | MORGAN STANLEY & CO. INTERNATIONAL LIMITED | UBS SECURITIES LLC

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Title: UNDERWRITING AGREEMENT
Governing Law: New York     Date: 12/4/2006
Law Firm: Sidley Austin; Allen & Overy    

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                                                                    Exhibit 1.1

                                                                 EXECUTION COPY

                             UNDERWRITING AGREEMENT

                             dated November 24, 2006

                            GRANITE MASTER ISSUER PLC

                                       and

                                NORTHERN ROCK PLC

                                       and

                        GRANITE FINANCE FUNDING 2 LIMITED

                                       and

                        GRANITE FINANCE TRUSTEES LIMITED

                                       and

                          DEUTSCHE BANK SECURITIES INC.

                                       and

                              LEHMAN BROTHERS INC.

                                       and

               MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

                                       and

                              BARCLAYS CAPITAL INC.

                                       and

                        CITIGROUP GLOBAL MARKETS LIMITED

                                       and

                          J. P. MORGAN SECURITIES INC.

                                       and

                    MORGAN STANLEY & CO. INTERNATIONAL LIMITED

                                       and

                               UBS SECURITIES LLC

                      relating to GRANITE MASTER ISSUER PLC

        U.S. $650,000,000 Series 2006-4 Class A1 Notes due December 2030

        U.S. $704,300,000 Series 2006-4 Class A4 Notes due December 2054

       U.S. $1,130,000,000 Series 2006-4 Class A6 Notes due December 2054

         U.S. $60,600,000 Series 2006-4 Class B1 Notes due December 2054

          U.S. $47,800,000 Series 2006-4 Class M1 Notes due December 2054

         U.S. $10,000,000 Series 2006-4 Class M2 Notes due December 2054

         U.S. $32,600,000 Series 2006-4 Class C1 Notes due December 2054

         U.S. $15,000,000 Series 2006-4 Class C2 Notes due December 2054



                                  SIDLEY AUSTIN
                                WOOLGATE EXCHANGE
                              25 BASINGHALL STREET
                                LONDON, EC2V 5HA
                              TELEPHONE 020 7360 3600
                             FACSIMILE 020 7626 7937

<PAGE>



                                    CONTENTS

<TABLE>
<CAPTION>

Clause                                                                                                      Page





<S>       <C>                                                                                                 <C>
1.        Agreement to Issue and Subscribe....................................................................5
2.         Stabilization.......................................................................................8
3.        Agreements by the Underwriters......................................................................9
4.        Listing............................................................................................16
5.        Representations and Warranties of the Master Issuer................................................17
6.        Representations and Warranties of Funding 2 and the Mortgages Trustee..............................23
7.        Representations and Warranties of NRPLC............................................................28
8.        Covenants of the Master Issuer, Funding 2, the Mortgages Trustee and NRPLC.........................31
9.        Conditions Precedent...............................................................................40
10.       Expenses...........................................................................................44
11.       Indemnification....................................................................................45
12.       Termination........................................................................................49
13.       Survival of Representations and Obligations........................................................50
14.       Notices............................................................................................51
15.       Time...............................................................................................52
16.       Non Petition and Limited Recourse..................................................................52
17.       Governing Law and Jurisdiction.....................................................................53
18.       Counterparts.......................................................................................54
19.       Authority of the Lead Underwriters.................................................................54
20.       Successors.........................................................................................54

Schedule 1 ................................................................................................S-1
</TABLE>


                                                     i
<PAGE>



THIS UNDERWRITING AGREEMENT (this "Agreement") is made as of November 24, 2006

BETWEEN:

(1)   GRANITE MASTER ISSUER PLC, a public limited company incorporated under
     the laws of England and Wales, whose registered office is at Fifth Floor,
     100 Wood Street, London EC2V 7EX (the "Master Issuer");

(2)   NORTHERN ROCK PLC, a public limited company incorporated under the laws
     of England and Wales, whose registered office is at Northern Rock House,
     Gosforth, Newcastle upon Tyne NE3 4PL ("NRPLC");

(3)   GRANITE FINANCE FUNDING 2 LIMITED, a private limited company incorporated
     under the laws of England and Wales, whose registered office is at Fifth
     Floor, 100 Wood Street, London EC2V 7EX ("Funding 2");

(4)   GRANITE FINANCE TRUSTEES LIMITED, a private limited company incorporated
     under the laws of Jersey, Channel Islands, whose registered office is at
     22 Grenville Street, St. Helier, Jersey JE4 8PX, Channel Islands (the
     "Mortgages Trustee");

(5)   DEUTSCHE BANK SECURITIES INC., a Delaware corporation, whose registered
     office is at 60 Wall Street, New York, New York 10005, LEHMAN BROTHERS
     INC., a corporation organized under the laws of the State of Delaware,
     whose registered office is at 2711 Centerville Road, Wilmington, Delaware
     19808, and MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED, a
     corporation organized under the laws of the State of Delaware, whose
     registered office is at c/o The Corporation Trust Company, 1209 Orange
     Street, Wilmington, Delaware 19801 (the "Lead Underwriters"); and

(6)   BARCLAYS CAPITAL INC., a corporation organized under the laws of the
     State of Connecticut, whose registered office is at 200 Park Avenue, New
     York, New York 10166, CITIGROUP GLOBAL MARKETS LIMITED, a limited
     liability company incorporated under the laws of England and Wales, whose
     registered office is at Citigroup Centre, Canada Square, Canary Wharf,
     London E14 5LB, J.P. MORGAN SECURITIES INC., a corporation organized
     under the laws of the State of New York, whose registered office is at
     270 Park Avenue, New York, New York 10019, MORGAN STANLEY & CO.
     INTERNATIONAL LIMITED, a private limited company incorporated under the
     laws of England and Wales, whose registered office is 25 Cabot Square,
     Canary Wharf, London E14 4QA and UBS SECURITIES LLC, a limited liability
     company organized under the laws of the State of Delaware, whose
     registered office is at c/o Corporation Service Company, 2711 Centerville
      Road, Suite 400, Wilmington, Delaware 19808 (together with the Lead
     Underwriters, the "Underwriters" and each an "Underwriter").

WHEREAS:

(A)   The Master Issuer proposes to issue and sell to the Underwriters the
     mortgage-backed notes of the series and class specified in Schedule 1
     hereto and described in Clause 1.3 hereof (the "US Notes" as set forth on
     the cover page of the Prospectus Supplement).

(B)   The US Notes will be issued in U.S. dollars and in minimum denominations
     of $100,000 and integral multiples of $1,000 in excess thereof. The US
     Notes will be issued on the date and at the time specified in the
     Prospectus Supplement, which date and time may be changed by agreement
     between the Master Issuer and the Lead Underwriters on behalf of the
     Underwriters (such date and time of delivery of and payment for such US
     Notes being
<PAGE>


     hereinafter referred to as the "Closing Date"). The issue of the US Notes
     is referred to in this Agreement as the "Issue".

(C)   Simultaneously with the Issue, the Master Issuer intends to issue other
     classes and series of notes (the "Reg S Notes", and together with the US
     Notes, the "Notes") specified in the subscription agreement dated as of
     the date hereof (the "Subscription Agreement") among the Master Issuer,
     NRPLC, Funding 2, the Mortgages Trustee and the respective dealers named
     therein (the "Dealers"). Such Dealers have agreed to subscribe and pay
     for the Reg S Notes upon the terms and subject to the conditions
     contained in the Subscription Agreement and the programme agreement dated
     as of January 19, 2005 (the "Programme Date"), as amended by a Deed of
     Amendment dated August 26, 2005, among the Master Issuer, NRPLC, Funding
     2, the Mortgages Trustee and the respective dealers named therein (the
     "Programme Agreement").

(D)   The Notes will be constituted by, issued subject to and have the benefit
     of a supplemental trust deed to the Issuer Trust Deed (the "Supplemental
     Issuer Trust Deed") to be entered into on or before the Closing Date
     between the Master Issuer and The Bank of New York, London Branch as
     trustee for the Noteholders (the "Note Trustee").

(E)   The Notes (together with the Master Issuer's obligations to its other
     creditors) will be secured by the benefit of security interests created
     under a deed of charge and assignment by way of security dated the
     Programme Date, which includes any deed of accession entered into in
     connection therewith or supplement thereto (the "Issuer Deed of Charge")
     by the Master Issuer, The Bank of New York (in its separate capacities as
     the Note Trustee and the Issuer Security Trustee), Citibank, N.A. (in its
     separate capacities as the Principal Paying Agent, the US Paying Agent,
     the Registrar, the Transfer Agent, an Issuer Account Bank and the Agent
     Bank), NRPLC (in its separate capacities as the Issuer Cash Manager, the
     Issuer GIC Provider, an Issuer Account Bank and the Start-up Loan
     Provider), and Law Debenture Corporate Services Limited in its capacity
     as the Corporate Services Provider. The deed of accession to the Issuer
     Deed of Charge to be entered into on the Closing Date is herein referred
     to as the "Issuer Deed of Accession".

(F)   Payments of principal of, and interest on, the US Notes will be made by
     the Master Issuer to the US Paying Agent and by the US Paying Agent to
      Noteholders on behalf of the Master Issuer under a paying agent and agent
     bank agreement entered into on or before the Programme Date (the "Issuer
     Paying Agent and Agent Bank Agreement") among the Master Issuer, the Note
     Trustee, the Issuer Security Trustee, the Agent Bank, the Principal
     Paying Agent, the US Paying Agent, the Transfer Agent and the Registrar.

(G)   Each class of the US Notes will be in fully registered permanent global
     form. The Registrar will maintain a register in respect of the US Notes
     in accordance with the Issuer Paying Agent and Agent Bank Agreement. The
     global note certificates representing the US Notes (the "Dollar Global
     Note Certificates") will be deposited on behalf of the beneficial owners
     of the US Notes with Citibank N.A. in New York, as custodian for, and
     registered in the name of Cede & Co. as nominee of, The Depository Trust
     Company ("DTC").

(H)   The Master Issuer will use an amount in Sterling equal to the gross
     proceeds of the Issue as well as an amount in Sterling equal to the gross
     proceeds of the Reg S Notes issue to make advances (each a loan tranche)
     to Funding 2 pursuant to the terms of the global intercompany loan
     agreement entered into on or before the Programme Date among the Master
     Issuer, Funding 2, the Agent Bank and The Bank of New York, London Branch
     in its capacity as security trustee (the "Funding 2 Security Trustee")
     (the "Global Intercompany Loan Agreement" and each loan tranche made
     thereunder, a "Loan Tranche"). Reference to the

                                      2
<PAGE>

     Global Intercompany Loan Agreement shall include reference to a loan
     tranche supplement in respect of the Global Intercompany Loan Agreement
     to be entered into on or about the Closing Date among Funding 2, the
     Master Issuer, the Funding 2 Security Trustee and the Agent Bank, as
     amended, restated, novated, verified or supplemented from time to time
     and shall include any additional and/or replacement intercompany loan
     terms and conditions entered into from time to time in accordance with
     the Legal Agreements.

(I)   Funding 2 will pay the proceeds of each Loan Tranche to the Mortgages
     Trustee (or to its order) in consideration for the increase of its
     beneficial share of a trust portfolio made up of, amongst other things,
     first residential mortgage loans (the "Mortgage Loans") and an interest
     in the related insurances and their related security (together, the
     "Related Security").

(J)   On March 26, 2001, NRPLC assigned the initial portfolio of Mortgage Loans
     and their Related Security to the Mortgages Trustee and may assign
     further Mortgage Loans on subsequent assignment dates pursuant to a
     mortgage sale agreement dated March 26, 2001 among NRPLC, the Mortgages
     Trustee, Funding 2 and the Funding 2 Security Trustee (the "Mortgage Sale
     Agreement"). Each of the Mortgages Trustee and Funding 2 has appointed
     NRPLC as administrator to service the Mortgage Loans and their Related
     Security pursuant to an Administration Agreement dated March 26, 2001
     (the "Administration Agreement").

(K)   The Mortgages Trustee holds the Mortgage Loans and their Related Security
     on a bare trust in undivided shares for the benefit of Funding, Funding 2
     and NRPLC pursuant to the mortgages trust deed dated March 26, 2001
     entered into by NRPLC, Funding, Funding 2 and the Mortgages Trustee (the
     "Mortgages Trust Deed"). The Mortgages Trustee also entered into a
     guaranteed investment contract dated on or about May 26, 2004 in respect
     of its principal bank account (the "Mortgages Trustee Guaranteed
     Investment Contract"), among the Mortgages Trustee, the Security Trustee,
     the Cash Manager and NRPLC (in its capacity as the Mortgages Trustee GIC
     Provider).

(L)   Funding 2's obligations to the Master Issuer under the Global
     Intercompany Loan Agreement and to Funding 2's other creditors are
     secured by the benefit of security interests created by a deed of charge
     and assignment dated the Programme Date, which will include any deed of
     accession to be entered into in connection therewith or supplement
     thereto (the "Funding 2 Deed of Charge"), by and among Funding 2, the
     Master Issuer, the Mortgages Trustee, the Funding 2 Security Trustee, the
     Issuer Security Trustee, Law Debenture Corporate Services Limited and
     NRPLC (in its separate capacities as Cash Manager, Account Bank, Funding
     2 Basis Rate Swap Provider and Funding 2 GIC Provider).

(M)   In connection with Funding 2's purchase of a beneficial interest in a
     mortgage portfolio and the issue of certain notes by the Master Issuer,
     Funding 2, in addition to the documents described above, entered into on
     the Programme Date (1) a cash management agreement with the Cash Manager,
     the Mortgages Trustee, the Seller, Funding and the Funding 2 Security
     Trustee (the "Cash Management Agreement"); (2) a bank account agreement
     with the Account Banks, the Funding 2 Security Trustee and the Cash
     Manager (the "Funding 2 Bank Account Agreement"); (3) a guaranteed
     investment contract with, inter alios, NRPLC as Funding 2 GIC Provider
     and Cash Manager and the Funding 2 Security Trustee (the "Funding 2
     Guaranteed Investment Contract"); (4) a corporate services agreement (the
     "Corporate Services Agreement") with, inter alios, Law Debenture
     Corporate Services Limited as corporate services provider to Funding 2
     and the Master Issuer; and (5) an ISDA Master Agreement including the
     Schedule thereto and confirmations thereunder in the respect of the
     Funding 2 (mortgage rates) basis rate swap and Funding 2 (LIBOR rate)
     basis rate swap with Funding 2, the Basis Rate Swap Provider and the Note
     Trustee (the "Basis Rate Swap Agreements").


                                      3
<PAGE>


(N)   In connection with the Issue, the Master Issuer will also execute and
     deliver, on or before the Closing Date, (1) the Global Note Certificates
     relating to each class of the Notes; (2) a start-up loan tranche
     supplement with the Start-up Loan Provider and the Issuer Security
     Trustee (the "Start-Up Loan Tranche Supplement"); (3) an ISDA Master
     Agreement, including the Schedule thereto and confirmations thereunder in
     respect of Dollar/Sterling currency swaps with the relevant Issuer Swap
     Provider(s) and the Note Trustee (the "Dollar Currency Swap Agreements");
     and (4) an ISDA Master Agreement, including the Schedule thereto and
     confirmations thereunder in respect of Euro/Sterling currency swaps with
     the relevant Issuer Swap Provider(s) and the Note Trustee (the "Euro
     Currency Swap Agreements" and together with the Dollar Currency Swap
     Agreements, the "Currency Swap Agreements").

(O)   In connection with the Issue, the Master Issuer has executed and
     delivered, on or before the Programme Date, (1) the Corporate Services
     Agreement; (2) a cash management agreement between the Master Issuer, the
     Issuer Cash Manager and the Issuer Security Trustee (the "Issuer Cash
     Management Agreement"); (3) a bank account agreement between the Master
     Issuer, the Issuer Security Trustee, the Issuer Cash Manager, the Issuer
     GIC Account Bank and the Issuer Transaction Account Bank (the "Issuer
     Bank Account Agreement"); (4) a post-enforcement call option agreement
     (the "Post-Enforcement Call Option Agreement") between the Master Issuer,
     the Note Trustee and GPCH Limited; and (5) a start-up loan agreement with
     the Start-up Loan Provider, the Master Issuer and the Issuer Security
     Trustee (the "Start-Up Loan Agreement").

(P)   As required, the Master Issuer, Funding 2, the Mortgages Trustee and/or
     NRPLC will enter into any other relevant documents to be signed and
     delivered on or before the Closing Date (such documents, together with
     the Mortgage Sale Agreement, the Mortgages Trust Deed, the Administration
     Agreement, the Mortgages Trustee Guaranteed Investment Contract, the
     Global Intercompany Loan Agreement, the Post-Enforcement Call Option
     Agreement, the Funding 2 Guaranteed Investment Contract, the Cash
     Management Agreement, the Funding 2 Bank Account Agreement, the
     Collection Bank Agreement, the Start-up Loan Agreement, the Start-up Loan
     Tranche Supplement, the Funding 2 Deed of Charge, the Basis Rate Swap
     Agreements, the Issuer Deed of Charge (as amended by the Issuer Deed of
      Accession), the Supplemental Issuer Trust Deed, the Issuer Cash
     Management Agreement, the Issuer Paying Agent and Agent Bank Agreement,
     the Issuer Bank Account Agreement, the Corporate Services Agreement, the
     Currency Swap Agreements, this Agreement, the Programme Agreement and the
     Subscription Agreement, each as they have been or may be amended,
     restated, varied or supplemented from time to time are collectively
     referred to herein as the "Legal Agreements").

(Q)   The Master Issuer (together with Funding 2 and the Mortgages Trustee) has
     prepared a registration statement on Form S-3, including a prospectus
     relating to the US Notes and additional series of notes, for the
     registration under the Securities Act of 1933, as amended (the
     "Securities Act"), of the offering and sale thereof from time to time in
     accordance with Rule 415 under the Securities Act. At or prior to the
     time when sales to purchasers of the US Notes were first made by the
     Underwriters, which was approximately 3:00 p.m. (London time) on November
     22, 2006 (the "Time of Sale"), the Master Issuer (together with Funding 2
     and the Mortgages Trustee) had prepared the following information (when
     read together, the "Time of Sale Information"): (i) the Preliminary
     Prospectus Supplement dated November 9, 2006 to the base prospectus dated
     September 12, 2006 (including information referred to under the caption
     "Static Pool Data" in Annex D therein regardless of whether it is deemed
     a part of the Registration Statement or Prospectus), together with such
     base prospectus (the "Initial Preliminary Prospectus") and (ii) the
     Preliminary Prospectus Supplement dated November 21, 2006 to the base
     prospectus dated September 12, 2006 (including information referred to
     under the caption "Static Pool Data" in Annex D therein regardless of
     whether it is


                                      4
<PAGE>

     deemed a part of the Registration Statement or Prospectus) together with
     such base prospectus (the "Revised Preliminary Prospectus"). If,
     subsequent to the Time of Sale and prior to the Closing Date, the Revised
     Preliminary Prospectus included an untrue statement of material fact or
     omitted to state a material fact necessary in order to make the
     statements therein, in the light of the circumstances under which they
     were made, not misleading, and as a result investors in the US Notes may
     terminate their old "Contracts of Sale" (within the meaning of Rule 159
     under the Securities Act) for any US Notes and the Underwriters enter
     into new Contracts of Sale with investors in the US Notes, then "Time of
     Sale Information" will refer to the information conveyed to investors at
     the time of entry into the first such new Contract of Sale, in an amended
     preliminary prospectus approved by the Master Issuer (together with
     Funding 2 and the Mortgages Trustee) and the Lead Underwriters that
     corrects such material misstatements or omissions (a "Corrected
     Prospectus") and "Time of Sale" will refer to the time and date on which
     such new Contracts of Sale were entered into.

IT IS AGREED as follows:

1.      AGREEMENT TO ISSUE AND SUBSCRIBE

1.1     Definitions and Interpretation

       (a)     Capitalized terms used herein and not otherwise defined herein
              or pursuant hereto, unless the context otherwise requires, shall
              have the meanings given to them in the Programme Master
              Definitions Schedule signed for the purposes of identification
              only by Sidley Austin Brown & Wood and Allen & Overy LLP on the
              Programme Date and the Issuer Master Definitions Schedule signed
               for the purposes of identification only by Sidley Austin Brown &
              Wood and Allen & Overy LLP on the Programme Date (each as
              amended, varied or supplemented from time to time). In the event
              of a conflict between the Programme Master Definitions Schedule
              and the Issuer Master Definitions Schedule, the Issuer Master
              Definitions Schedule will control.

       (b)     For purposes of this Agreement, "Investor Presentation" means
              the investor presentation in respect of the Notes prepared by
              NRPLC for purposes of investor meetings in the United States
              beginning on November 13, 2006.

       (c)     In this Agreement:

              (i)     words denoting the singular number only shall include the
                     plural number also and vice versa;

              (ii)    words denoting one gender only shall include the other
                     genders;

              (iii)   words denoting persons only shall include firms and
                     corporations and vice versa;

              (iv)    references to any statutory provision shall be deemed
                     also to refer to any statutory modification or
                     re-enactment thereof or any statutory instrument, order
                     or regulation made thereunder or under any such
                     re-enactment;

              (v)     references to any agreement or other document (including
                     any of the Legal Agreements) shall be deemed also to
                     refer to such agreement or document as amended, varied,
                     supplemented, restated or novated from time to time;

                                      5
<PAGE>

              (vi)    clause, paragraph and schedule headings are for ease of
                     reference only;

              (vii)   reference to a statute shall be construed as a reference
                     to such statute as the same may have been, or may from
                      time to time be, amended or re-enacted to the extent such
                     amendment or re-enactment is substantially to the same
                     effect as such statute on the date hereof;

              (viii) reference to a time of day, unless otherwise specified,
                     shall be construed as a reference to London time; and

              (ix)    references to any person shall include references to his
                     successors, transferees and assigns and any person
                     deriving title under or through him.

1.2     Offering

       Each of the Master Issuer, Funding 2 and the Mortgages Trustee
       understands that the Underwriters have offered and will offer the US
       Notes upon the terms set forth in the Time of Sale Information and the
       Prospectus, and in compliance with all applicable laws and regulations.

1.3     Purchase and Sale

       Subject to the terms and conditions and in reliance upon the
       representations and warranties set forth in this Agreement, the Master
       Issuer agrees to issue and sell the US Notes on the Closing Date to the
       Underwriters as hereinafter provided, and each Underwriter agrees to
       purchase, severally and not jointly, from the Master Issuer the
       respective principal amount of the US Notes set forth opposite such
       Underwriter's name in Schedule 1 hereto at a price equal to the
       aggregate of 100 per cent. of the aggregate principal amount of the
       Series 2006-4 Class A1 Notes, 100 per cent. of the aggregate principal
       amount of the Series 2006-4 Class A4 Notes, 100 per cent. of the
       aggregate principal amount of the Series 2006-4 Class A6 Notes, 100 per
       cent. of the aggregate principal amount of the Series 2006-4 Class B1
       Notes, 100 per cent. of the aggregate principal amount of the Series
       2006-4 Class M1 Notes, 100 per cent. of the aggregate principal amount
       of the Series 2006-4 Class M2 Notes, 100 per cent. of the aggregate
       principal amount of the Series 2006-4 Class C1 Notes and 100 per cent.
       of the aggregate principal amount of the Series 2006-4 Class C2 Notes
       (the "Issue Price"). The Series 2006-4 Class A1 Notes, Series 2006-4
       Class A4 Notes, Series 2006-4 Class A6 Notes, Series 2006-4 Class B1
       Notes, Series 2006-4 Class M1 Notes, Series 2006-4 Class M2 Notes,
       Series 2006-4 Class C1 Notes and Series 2006-4 Class C2 Notes are
       collectively referred to as the "US Notes".

        The Master Issuer acknowledges and agrees that each of the Underwriters
       in providing investment banking services to the Master Issuer in
       connection with the offering, including in acting pursuant to the terms
       of this Agreement, has acted and is acting as an arm's-length
       counterparty and not as a fiduciary and the Master Issuer does not
       intend any of the Underwriters to act in any capacity other than as an
       arm's-length counterparty, including as a fiduciary or in any other
       position of higher trust.

1.4     Commissions

       In consideration of the obligations undertaken herein by the
       Underwriters, the Master Issuer agrees to pay to the Underwriters a
       selling commission (the "Selling Commission") of 0.0267 per cent.

                                      6
<PAGE>


       of the aggregate principal amount of the Series 2006-4 Class A1 Notes,
       0.0400 per cent. of the aggregate principal amount of the Series 2006-4
       Class A4 Notes, 0.0500 per cent. of the aggregate principal amount of
       the Series 2006-4 Class A6 Notes, 0.0933 per cent. of the aggregate
       principal amount of the Series 2006-4 Class B1 Notes, 0.1400 per cent.
       of the aggregate principal amount of the Series 2006-4 Class M1 Notes,
       0.1400 per cent. of the aggregate principal amount of the Series 2006-4
       Class M2 Notes, 0.2867 per cent. of the aggregate principal amount of
       the Series 2006-4 Class C1 Notes and 0.2867 per cent. of the aggregate
       principal amount of the Series 2006-4 Class C2 Notes and a combined
       management and underwriting commission (the "Management and
       Underwriting Commission") of 0.0133 per cent. of the aggregate
       principal amount of the Series 2006-4 Class A1 Notes, 0.0200 per cent.
       of the aggregate principal amount of the Series 2006-4 Class A4 Notes,
       0.0250 per cent. of the aggregate principal amount of the Series 2006-4
       Class A6 Notes, 0.0467 per cent. of the aggregate principal amount of
       the Series 2006-4 Class B1 Notes, 0.0700 per cent. of the aggregate
       principal amount of the Series 2006-4 Class M1 Notes, 0.0700 per cent.
       of the aggregate principal amount of the Series 2006-4 Class M2 Notes,
       0.1433 per cent. of the aggregate principal amount of the Series 2006-4
       Class C1 Notes and 0.1433 per cent. of the aggregate principal amount
       of the Series 2006-4 Class C2 Notes.

       The Master Issuer undertakes and covenants that on the Closing Date it
       will pay to the Lead Underwriters on behalf of the Underwriters the
       aggregate Selling Commission and aggregate Management and Underwriting
       Commission calculated in accordance with this Clause 1.4.

1.5     Delivery and Payment

       No later than 3:00 p.m. (London time) on the Closing Date, the Master
       Issuer will (a) cause the Global Note Certificate for each of the US
       Notes to be registered in the name of Cede & Co. as nominee for DTC for
       credit on the Closing Date to the account of the Lead Underwriters with
       DTC or to such other account with DTC as the Lead Underwriters may
       direct; and (b) deliver the Global Note Certificate for each of the US
       Notes duly executed on behalf of the Master Issuer and authenticated in
       accordance with the Paying Agent and Agent Bank Agreement to Citibank
       N.A., as custodian for DTC.

       Against delivery of the US Notes (i) the Underwriters will pay to the
       Lead Underwriters the gross underwriting proceeds for the US Notes and
       (ii) the Lead Underwriters will pay to the Master Issuer or to a third
       party, as directed by the Master Issuer, the gross underwriting
       proceeds for the US Notes. Payment for the US Notes shall be made by
       the Lead Underwriters in Dollars in immediately available funds to the
       account of the Master Issuer, account number 10861537, or to such other
       accounts as the Master Issuer may direct, and shall be evidenced by a
        confirmation from the Lead Underwriters that they have so made that
       payment to the Master Issuer.

1.6     The Legal Agreements

       To the extent that each of the Master Issuer, Funding 2, the Mortgages
       Trustee and NRPLC is a signatory to the Legal Agreements, each will on
       or before the Closing Date, have entered into or enter into each of the
       Legal Agreements to which it is a party, substantially in the form of
       the draft reviewed by Allen & Overy LLP and Sidley Austin (any draft of
       any document so reviewed being called an "agreed form"), with such
       amendments as the Lead Underwriters, on behalf of the Underwriters, may
       agree with the Master Issuer and, if it is a signatory, Funding 2, the
       Mortgages Trustee and/or NRPLC.

1.7     The Notes

       The Notes will be issued on the Closing Date in accordance with the
       terms of the Supplemental Issuer Trust Deed and will be in, or
       substantially in, the form set out therein.


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1.8     Prospectus

       The Master Issuer confirms that it has prepared the Initial Preliminary
       Prospectus, the Revised Preliminary Prospectus and the Prospectus for
       use in connection with the issue of the US Notes and hereby authorizes
       the Underwriters to distribute copies of the Prospectus in connection
       with the offering and sale of the US Notes, copies of the Initial
       Preliminary Prospectus and the Revised Preliminary Prospectus having
       already been distributed with the consent of the Master Issuer.

1.9     Authority to Offer

       The Master Issuer confirms that it has authorized the Lead Underwriters
       to offer the US Notes on its behalf to the Underwriters for
        subscription at the Issue Price subject to signature of this Agreement.
       Subject to Clause 3.2(a), the Master Issuer acknowledges and agrees
       that the Underwriters may offer and sell US Notes to or through any
       affiliate of an Underwriter and that any such affiliate may offer and
       sell US Notes purchased by it to or through any Underwriter.

2.      STABILIZATION

2.1     Stabilization

       (a)     In connection with the issue of the US Notes, the Underwriter(s)
              (if any) named as the stabilizing underwriter(s) (the
              "Stabilizing Underwriter(s)") (or persons acting on behalf of
              any Stabilizing Underwriter) in the Prospectus Supplement may
              over-allot US Notes (provided that the aggregate principal
              amount of US Notes allotted does not exceed 105 per cent. of the
              aggregate principal amount of the US Notes) or effect
              transactions with a view to supporting the market price of the
               US Notes at a level higher than that which might otherwise
              prevail. However, there is no assurance that the Stabilizing
              Underwriter(s) (or persons acting on behalf of any Stabilizing
              Underwriter) will undertake stabilization action. Any
              stabilization action may begin on or after the date on which
              adequate public disclosure of the terms of the offer of the US
              Notes is made and, if begun, may be ended at any time, but it
               must end no later than the earlier of 30 days after the issue
              date of the US Notes and 60 days after the date of the allotment
              of the US Notes.

       (b)     The Master Issuer confirms that it has not issued and will not
              issue, without the prior consent of the Stabilizing
              Underwriter(s) (if any) (such consent not to be unreasonably
              withheld), any press or other public announcement referring to
              the proposed issue of US Notes unless the announcement
              adequately discloses that stabilizing action may take place in
              relation to the US Notes to be issued.

       (c)     The Master Issuer authorises the Stabilizing Underwriter(s) to
               make all appropriate announcements in relation to any
              stabilization or ancillary stabilization action taken in respect
              of the US Notes.

       (d)     In carrying on any stabilization activity, the Stabilizing
              Underwriter(s) shall act as principal and not as agent of the
              Master Issuer.

2.2     Stabilization Profits and Losses

       As between the Master Issuer and the Stabilizing Underwriter any loss
       resulting from stabilization transactions entered into by the
       Stabilizing Underwriter pursuant to Clause 2.1

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       shall be borne, and any profit arising therefrom shall be retained, by
       the Stabilizing Underwriter for its own account.

3.      AGREEMENTS BY THE UNDERWRITERS

3.1     Default of Underwriters

       (a)     If any Underwriter shall default on its obligation to purchase
              US Notes which it has agreed to purchase hereunder, the
              non-defaulting Underwriters may in their discretion arrange to
              purchase, or for another party or other parties reasonably
              satisfactory to NRPLC to purchase, such US Notes on the terms
              contained herein. If within thirty-six hours after such default
              by any Underwriter, the non-defaulting Underwriters do not
              arrange for the purchase of such US Notes, then NRPLC shall be
              entitled to a further period of thirty-six hours within which to
               procure another party or other parties satisfactory to the
              non-defaulting Underwriters to purchase such US Notes on such
              terms. In the event that, within the respective prescribed
              periods, the Lead Underwriters on behalf of the non-defaulting
              Underwriters notify NRPLC that the non-defaulting Underwriters
              have so arranged for the purchase of such US Notes, or NRPLC
              notifies the non-defaulting Underwriters that it has so arranged
              for the purchase of such US Notes, the non-defaulting
              Underwriters or NRPLC shall have the right to postpone the
              Closing Date for a period of time agreed by the Lead
              Underwriters and NRPLC acting reasonably, in order to effect
              whatever changes may thereby be made necessary in any documents
              or arrangements relating to the offering and sale of the US
              Notes. Any substitute purchaser of US Notes pursuant to this
              paragraph shall be deemed to be an Underwriter, for purposes of
              this Agreement, in connection with the offering and sale of the
              US Notes.

       (b)     If, after giving effect to any arrangements for the purchase of
              US Notes of a defaulting Underwriter by the non-defaulting
              Underwriters, as provided in Clause 3.1(a) above, the aggregate
              principal amount of the US Notes which remains unpurchased does
              not exceed ten per cent. of the aggregate principal amount of
              the US Notes, NRPLC shall have the right to require each
              non-defaulting Underwriter to purchase the principal amount of
              the US Notes which such Underwriter agreed to purchase hereunder
              and, in addition to require each non-defaulting Underwriter to
              purchase its pro rata share (based on the principal amount of
              the US Notes which such Underwriter agreed to purchase
               hereunder) of the principal amount of the US Notes of such
              defaulting Underwriter for which such arrangements have not been
              made; but nothing herein shall relieve a defaulting Underwriter
              from liability for its default.

       (c)     If, after giving effect to any arrangements for the purchase of
              the principal amount of the US Notes of a defaulting Underwriter
              by the non-defaulting Underwriters as provided in Clause 3.1(a)
               above, the aggregate principal amount of the US Notes which
              remains unpurchased exceeds ten per cent. of the aggregate
              principal amount of the US Notes, or if NRPLC shall not exercise
              the right described in Clause 3.1(b) above to require
              non-defaulting Underwriters to purchase the US Notes of a
              defaulting Underwriter, then this Agreement shall thereupon
              terminate, without liability on the part of the non-defaulting
               Underwriters; but nothing herein shall relieve a defaulting
              Underwriter from liability for its default.


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3.2     Selling

       Each Underwriter severally (and not jointly) agrees as follows:

       (a)     United States

              It is understood that several Underwriters propose to offer the
              US Notes for sale to the public in the United States as set
              forth in the Time of Sale Information and the Prospectus. Any
              Underwriters that are not U.S. registered broker dealers will
              offer and sell the US Notes in the United States only through
              U.S. registered broker dealers.

       (b)     United Kingdom

              Each Underwriter represents and agrees that:

              (i)     it has only communicated or caused to be communicated and
                     will only communicate or cause to be communicated any
                     invitation or inducement to engage in investment activity
                     (within the meaning of Section 21 of the FSMA) received
                     by it in connection with the issue or sale of any US
                     Notes in circumstances in which Section 21(1) of the FSMA
                      does not apply to the Master Issuer; and

              (ii)    it has complied and will comply with all applicable
                     provisions of the FSMA with respect to anything done by
                     it in relation to the US Notes in, from or otherwise
                     involving the United Kingdom.

       (c)     Italy

              Each of the Underwriters represents and agrees that the offering
              of the US Notes has not been cleared by CONSOB (the "Italian
               Securities Exchange Commission") pursuant to Italian securities
              legislation and, accordingly, each of the Underwriters
              represents and agrees that no US Notes may be offered, sold or
              delivered, nor may copies of the Prospectus or of any other
              document relating to the US Notes be distributed in the Republic
              of Italy, except:

              (i)     to professional investors ("operatori qualificati"), as
                     defined in Article 31, second paragraph, of CONSOB
                     Regulation No. 11522 of 1 July, 1998, as amended; or

              (ii)    in circumstances which are exempted from the rules on
                     solicitation of investments pursuant to Article 100 of
                     Legislative Decree No. 58 of 24 February, 1998 (the
                     "Financial Services Act") and Article 33, first
                     paragraph, of CONSOB Regulation No. 11971 of 14 May,
                     1999, as amended.

              Each of the Underwriters represents and agrees that any offer,
              sale or delivery of the US Notes or distribution of copies of
              the Prospectus or any other document relating to the US Notes in
               the Republic of Italy under (i) or (ii) above must be:

              (a)     made by an investment firm, bank or financial
                     intermediary permitted to conduct such activities in the
                     Republic of Italy in accordance with the Financial
                     Services Act and Legislative Decree No. 385 of 1
                     September, 1993, as amended from time to time (the
                     "Banking Act");


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               (b)     in compliance with Article 129 of the Banking Act and the
                     implementing guidelines of the Bank of Italy, as amended
                     from time to time, pursuant to which the issue or the
                     offer of securities in the Republic of Italy may need to
                     be preceded and followed by an appropriate notice to be
                     filed with the Bank of Italy depending, inter alia, on
                     the aggregate value of the securities issued or offered
                     in the Republic of Italy and their characteristics; and

              (c)     in accordance with any other applicable laws and
                     regulations.

       (d)     Ireland

              Each Underwriter represents and agrees that:

              (i)     it will not underwrite the issue of, or place, the US
                     Notes, otherwise than in conformity with the provisions
                     of the Irish Investment Intermediaries Act 1995 (as
                     amended), including, without limitation, Sections 9 and
                     23 thereof and any codes of conduct rules made under
                     Section 37 thereof and the provisions of the Investor
                     Compensation Act 1998;

              (ii)    it will not underwrite the issue of, or place, the US
                     Notes, otherwise than in conformity with the provisions
                     of the Irish Central Bank Acts 1942 - 1999 (as amended)
                      and any codes of conduct rules made under Section 117(1)
                     thereof;

              (iii)   it will not underwrite the issue of, or place, or do
                     anything in Ireland in respect of the US Notes otherwise
                      than in conformity with the provisions of the Irish
                     Prospectus (Directive 2003/71/EC) Regulations 2005 and
                     any rules issued under Section 51 of the Irish Investment
                     Funds, Companies and Miscellaneous Provisions Act 2005,
                     by the Irish Central Bank and Financial Services
                     Regulatory Authority ("IFSRA"); and

              (iv)    it will not underwrite the issue of, place or otherwise
     &nbs