Exhibit 10.8

                                                                  EXECUTION COPY

                             Dated 19 September 2006

                            GRANITE MASTER ISSUER PLC

                                   (as Issuer)

                                       and

                              BARCLAYS CAPITAL INC.

                              (as Remarketing Bank)

                                       and

                                BARCLAYS BANK PLC

                           (as Conditional Purchaser)

                                       and

                                NORTHERN ROCK PLC

                  (as Northern Rock and as Issuer Cash Manager)

            ---------------------------------------------------------

                         CONDITIONAL PURCHASE AGREEMENT

                                   relating to

              $1,000,000,000 Series 2006-3 Class A4 Notes due 2054

            ---------------------------------------------------------



                                TABLE OF CONTENTS

1.       DEFINITIONS AND INTERPRETATION......................................1

2.       AGREEMENTS BY THE CONDITIONAL PURCHASER, THE REMARKETING

         BANK AND THE ISSUER.................................................4

3.       REPRESENTATIONS AND WARRANTIES......................................7

4.       UNDERTAKINGS........................................................9

5.       CLOSING OF CONDITIONAL PURCHASE....................................11

6.       [RESERVED].........................................................12

7.       TERMINATION OF THIS AGREEMENT......................................12

8.       TRANSFER...........................................................12

9.       TIME...............................................................13

10.      COMMUNICATIONS.....................................................13

11.      NON-PETITION AND LIMITED RECOURSE..................................14

12.      COUNTERPARTS.......................................................15

13.      GOVERNING LAW AND JURISDICTION.....................................15

14.      CONTRACTS (RIGHTS OF THIRD PARTIES) ACT 1999.......................15

SCHEDULE 1 FORM OF EXTENSION REQUEST........................................17

SCHEDULE 2 FORM OF NOTICE OF EXTENSION......................................18

SCHEDULE 3 FORM OF CONDITIONAL PURCHASE ACTIVATION NOTICE...................19



                                       i



THIS CONDITIONAL PURCHASE AGREEMENT (this "Agreement") is made on 19 September
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 "Issuer");

(2)   BARCLAYS CAPITAL INC., a corporation organised under the laws of the State
      of Connecticut, operating out of its office at 200 Park Avenue, New York,
      New York 10166 (the "Remarketing Bank");

(3)   BARCLAYS BANK PLC, a public limited company incorporated under the laws of
      England and Wales, operating out of its office at 5 The North Colonnade,
      Canary Wharf, London E14 4BB (the "Conditional Purchaser"); and

(4)   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, in its individual capacity
      ("Northern Rock") and in its capacity as Issuer Cash Manager (the "Issuer
      Cash Manager").

WHEREAS:

(A)   The Issuer, the Conditional Purchaser, the Remarketing Bank, the Issuer
      Cash Manager and Northern Rock wish to record the arrangements agreed
      between them in relation to an issue of $1,000,000,000 in aggregate
      principal amount of Series 2006-3 Class A4 Notes due 2054 (the "Class A4
      Notes") which expression shall, where the context permits, include the
      Global Class A4 Note Certificate and any Individual Class A4 Note
      Certificates issued in exchange for the Global Class A4 Note Certificate
      which will be constituted by the Issuer Trust Deed (as defined below) and
      secured in the manner set out in the Issuer Deed of Charge (as defined
      below).

(B)   Pursuant to a remarketing agreement (the "Remarketing Agreement") between,
      inter alios, the Issuer and the Remarketing Bank, the Remarketing Bank has
      been appointed to use its reasonable efforts prior to the service of a
      Remarketing Termination Notice to identify third party purchasers of the
      Class A4 Notes to acquire the Class A4 Notes from the then current holders
      of the Class A4 Notes on each Transfer Date up to and including the
      Transfer Date occurring in August 2054, subject to Clause 3.2 of the
      Remarketing Agreement. The Remarketing Bank will also facilitate the
      transfers of the Class A4 Notes on each Transfer Date. The Conditional
      Purchaser will agree on the terms of this Agreement to purchase certain
      Class A4 Notes on a Transfer Date.

1.    DEFINITIONS AND INTERPRETATION

1.1   For purposes of this Agreement, the following terms shall have the
      indicated meanings unless the context or use indicates another or
      different meaning and intent.

      "Conditional Purchase Activation Notice" has the meaning given to it in
      Clause 2.2(b) of this Agreement.


                                       1


      "Conditional Purchase Commitment" has the meaning given to it in Clause
      2.2(a) of this Agreement.

      "Conditional Purchase Commitment Period" means, subject to extension
      pursuant to Clause 2.1, the period from and including the Closing Date to
      18 September 2007 (or, if that day is not a Business Day, the immediately
      preceding Business Day) and, thereafter, if the Conditional Purchase
      Commitment is renewed pursuant to Clause 2.1, each 364-day period
      extending from but not including the last day of the preceding Conditional
      Purchase Commitment Period to and including the date that is specified in
      the Notice of Extension most recently served.

      "Conditional Purchase Loss Event" means the debiting of an amount to the
      Principal Deficiency Ledger in relation to any Class A Notes of any Series
      issued by the Issuer.

      "Eligible Transferee" has the meaning given to it in Clause 8 of this
      Agreement.

      "Extension Request" has the meaning given to it in Clause 2.1(b) of this
      Agreement.

      "Final Prospectus" means the Final Prospectus dated 15 September 2006
      relating to the US Notes.

      "Global Class A4 Note Certificate" means the note certificate representing
      the Class A4 Notes in global form.

      "Indemnified Person" has the meaning given to it in Clause 4.2(a) of this
      Agreement.

      "Indemnifying Party" has the meaning given to it in Clause 4.2(a) of this
      Agreement.

      "Individual Class A4 Note Certificates" means the note certificates
      representing the Class A4 Notes in definitive form.

      "Issuer Deed of Charge" means the deed of charge entered into on 19
      January, 2005 between, inter alios, the Issuer, the Issuer Security
      Trustee and the Note Trustee, including any deed of accession or
      supplement thereto.

      "Issuer Trust Deed" means the trust deed entered into on 19 January, 2005
      between the Issuer and the Note Trustee, as supplemented by any of the
      supplemental deeds thereto (as amended or supplemented from time to time).

      "Note Event of Default" means, in relation to the Class A4 Notes, the
      occurrence of an event of default as specified in Condition 9 of the terms
      and conditions of the Class A4 Notes.

      "Notes" means the notes constituted by the Issuer Trust Deed.

      "Notice of Extension" has the meaning given to it in Clause 2.1(c) of this
      Agreement.

      "Proceedings" has the meaning given to it in Clause 13.2 of this
      Agreement.


                                       2


      "Ratings Downgrade" means, with respect to the initial Conditional
      Purchaser, any replacement Conditional Purchaser appointed pursuant to the
      Remarketing Agreement or any Eligible Transferee who becomes a party to
      this Agreement pursuant to Clause 8, the downgrade of the short-term
      ratings of such Conditional Purchaser or Eligible Transferee below A-1+ by
      Standard & Poor's, P-1 by Moody's or F1+ by Fitch.

      "Relevant Documents" means this Agreement and the Remarketing Agreement.

      "Revised Preliminary Prospectus" means the Preliminary Prospectus dated 12
      September 2006 relating to the US Notes.

      "Settlement Account" has the meaning given to it in the Remarketing
      Agreement.

      "Specified Disclosure" has the meaning given to it in Clause 3.2 of this
      Agreement.

      "Unremarketed Notes" means:

      (i)   prior to the service of a Remarketing Termination Notice, and with
            respect to a Transfer Date, all of the Tendered Notes that will be
            Outstanding on such Transfer Date for which the Remarketing Bank has
            not identified purchasers by the end of the applicable Remarketing
            Period in accordance with the Remarketing Agreement;

      (ii)  at any time after the service of a Remarketing Termination Notice,
            other than based on a Remarketing Termination Event specified in
            Clauses 5.1(a) or (d) of the Remarketing Agreement, all of the Class
            A4 Notes (other than Class A4 Notes then held by the Conditional
            Purchaser) Outstanding on the Transfer Date immediately following
            the occurrence of the relevant Remarketing Termination Event, after
            giving effect to the application of Available Principal Receipts on
            that Transfer Date; and

      (iii) with respect to the Transfer Date occurring in August 2012, all of
            the Class A4 Notes (other than Class A4 Notes then held by the
            Conditional Purchaser) Outstanding on that Transfer Date, after
            giving effect to the application of Available Principal Receipts on
            that Transfer Date.

1.2   Capitalised 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 January 19, 2005 and the Issuer Master Definitions Schedule
      signed for the purposes of identification only by Sidley Austin Brown &
      Wood and Allen & Overy LLP on January 19, 2005 (each as amended, varied or
      supplemented from time to time), each of which is incorporated into this
      Agreement by reference.

1.3   In this Agreement:

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

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


                                       3


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

      (d)   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;

      (e)   references to any agreement or other document shall be deemed also
            to refer to such agreement or document as amended, varied,
            supplemented, restated or novated from time to time;

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

      (g)   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;

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

      (i)   references to any person include references to their successors,
            including, without limitation, an entity which assumes the rights
            and obligations of the relevant person by operation of the law of
            the jurisdiction of incorporation or domicile of such person.

2.    AGREEMENTS BY THE CONDITIONAL PURCHASER, THE REMARKETING BANK AND THE
      ISSUER

2.1   Term of Conditional Purchase Commitment

      (a)   The Conditional Purchaser makes this Conditional Purchase Commitment
            to the Remarketing Bank.

      (b)   Save as otherwise provided in this Agreement, the Issuer Cash
            Manager or the Remarketing Bank may deliver, not more than sixty
            (60) days and not less than forty (40) days before the end of each
            Conditional Purchase Commitment Period, to the Conditional Purchaser
            an irrevocable request in writing to extend the Conditional Purchase
            Commitment Period, substantially in the form of Schedule 1 hereto
            (an "Extension Request") to the date that is not more than 364 days
            following the last day of the current Conditional Purchase
            Commitment Period.

      (c)   If the Conditional Purchaser wishes to accept an Extension Request
            then it shall deliver, by not less than thirty (30) days before the
            last day of the current Conditional Purchase Commitment Period, to
            the Issuer Cash Manager and the Remarketing Bank an irrevocable
            notice, substantially in the form of Schedule 2 hereto ("Notice of
            Extension") that the Conditional Purchaser has consented to the
            Extension Request and specifying the last day of the extended
            Conditional Purchase Commitment Period agreed to thereby. Failure to
            deliver such a Notice of Extension by the day referred to above
            shall be


                                       4


            deemed a refusal to grant an extension of the Conditional Purchase
            Commitment Period.

      (d)   The Conditional Purchaser is not obliged to agree to extend the
            Conditional Purchase Commitment Period and in no event (unless
            otherwise agreed in writing by the parties to this Agreement) will
            it be extended beyond the Transfer Date occurring in August 2012.
            The initial Conditional Purchaser, any replacement Conditional
            Purchaser or any Eligible Transferee will not extend the Conditional
            Purchase Commitment Period unless each Rating Agency has confirmed
            in writing that no Ratings Downgrade will occur as a consequence of
            the extension of the Conditional Purchase Commitment. If the
            Conditional Purchaser does not extend its Conditional Purchase
            Commitment, the Issuer will cause notice of this fact to be given to
            the Class A4 Noteholders.

      (e)   The Remarketing Bank agrees to deliver an Extension Request to the
            Conditional Purchaser prior to each Transfer Date through and
            including the Transfer Date occurring in August 2011, pursuant to
            Clause 2.1(b) above, unless instructed otherwise by the Issuer Cash
            Manager.

2.2   Conditional Purchase by the Conditional Purchaser

      (a)   The Conditional Purchaser agrees to purchase Unremarketed Notes on
            the Transfer Date falling in each Conditional Purchase Commitment
            Period at the Transfer Price payable on that Transfer Date, on the
            terms of this Agreement and the Remarketing Agreement, as specified
            in the Conditional Purchase Activation Notice described in this
            Clause and delivered in respect of that Transfer Date (the
            "Conditional Purchase Commitment"). The Transfer Price payable upon
            the exercise of the Conditional Purchase Commitment shall not, on
            any Transfer Date, exceed the lesser of (a) $1,000,000,000 minus the
            aggregate Principal Amount Outstanding of the Class A4 Notes
            previously purchased by the Conditional Purchaser and then held by
            the Conditional Purchaser and (b) the Transfer Price payable in
            respect of the Unremarketed Notes referred to in the Conditional
            Purchase Activation Notice issued in respect of that Transfer Date.

      (b)   If, on any Transfer Date, the Conditional Purchase Commitment is to
            be exercised, the Remarketing Bank will give notice to the
            Conditional Purchaser in writing, substantially in the form of
            Schedule 3 hereto (a "Conditional Purchase Activation Notice") in
            accordance with Clause 3.7 of the Remarketing Agreement, which
            notice shall be irrevocable. Pursuant to Clause 3.7 of the
            Remarketing Agreement, the Issuer Cash Manager may deliver a
            Conditional Purchaser Activation Notice to the Conditional Purchaser
            if the Remarketing Bank does not. The Conditional Purchaser agrees
            to purchase, on a Transfer Date, all of the Unremarketed Notes
            specified in the Conditional Purchase Activation Notice delivered in
            respect of that Transfer Date, in accordance with the provisions of
            this Agreement.

      (c)   A Conditional Purchase Activation Notice shall specify:


                                       5


            (i)   the Principal Amount Outstanding of Unremarketed Notes that
                  the Conditional Purchaser is obliged to purchase on the
                  Transfer Date specified therein;

            (ii)  the Transfer Price payable by the Conditional Purchaser to or
                  at the direction of the Remarketing Bank on the Transfer Date
                  specified therein; and

            (iii) that the Remarketing Bank has not received notice from the
                  Issuer Cash Manager that any of the events specified in Clause
                  2.2(d) below has occurred and is continuing and the
                  Remarketing Bank is otherwise not aware that any of the events
                  in Clause 2.2(d) below has occurred and is continuing.

      (d)   The obligation of the Conditional Purchaser to purchase the
            Unremarketed Notes on any Transfer Date shall be subject to the
            conditions that:

            (i)   no Note Event of Default (as that term is then defined or was
                  defined on the Closing Date) has occurred and is continuing;

            (ii)  no Conditional Purchase Loss Event has occurred and is
                  continuing; and

            (iii) the Conditional Purchaser shall have received notice from the
                  Issuer Cash Manager that there will be sufficient Issuer
                  Available Revenue Receipts to pay all amounts of interest on
                  the Class A4 Notes scheduled to be paid on such Transfer Date,

            in each case (except in respect of clause (iii) above), on the date
            that the Conditional Purchase Activation Notice is o delivered to
            the Conditional Purchaser and on such Transfer Date.

      (e)   The Conditional Purchase Commitment shall terminate upon the earlier
            of (i) the redemption in full of the Class A4 Notes and (ii) if not
            extended in accordance with Clause 2.1, the last day of the current
            Conditional Purchase Commitment Period.

2.3   Conditions Precedent

      The conditions precedent to the Conditional Purchaser entering into this
      Agreement are:

      (a)   Executed Copies of Relevant Documents and other documents

            On or prior to the Closing Date there having been delivered to the
            Conditional Purchaser executed copies by all parties thereto of the
            Relevant Documents, the Issuer Swap Agreement in respect of the
            Series 2006-3 Class A4 Notes and the Series 2006-3 Loan Tranche
            Supplement;


                                       6


      (b)   Legal Opinions

            On or prior to the Closing Date, there having been delivered to the
            Conditional Purchaser copies of opinions with respect to the
            enforceability of the Relevant Documents, in form and substance
            satisfactory to the Conditional Purchaser, dated the Closing Date,
            of Sidley Austin, legal advisers as to English law to Northern Rock
            and Allen & Overy LLP, legal advisers as to English law to the
            Remarketing Bank;

      (c)   Certified Constitutional Documents

            On or prior to the Closing Date, there having been delivered to the
            Conditional Purchaser a copy, certified by a duly authorised
            director or the company secretary, as applicable, of the Issuer of
            (i) the Memorandum and Articles of Association of the Issuer; (ii)
            the resolution of the Board of Directors of the Issuer authorising
            the execution of the Relevant Documents and the entry into and
            performance of the transactions contemplated thereby; and the issue
            of the Class A4 Notes and the entry into and performance of the
            transactions contemplated thereby;

      (d)   Note Event of Default

            No Note Event of Default has occurred which is continuing on the
            Closing Date; and

      (e)   Ratings

            On or prior to the Closing Date, receipt of notification from Fitch,
            Moody's and Standard & Poor's that the long-term ratings for the
            Class A4 Notes of AAA/Aaa/AAA and the short-term ratings of
            A-1+/P-1/F1+ by Standard & Poor's, Moody's and Fitch, respectively,
            have been assigned either without conditions or subject only to the
            execution and delivery on or before the Closing Date of the Relevant
            Documents and any other applicable Transaction Documents.

3.    REPRESENTATIONS AND WARRANTIES

3.1   Representations and Warranties of Northern Rock and the Issuer

      (a)   Northern Rock represents and warrants to the other parties to this
            Agreement as at the date of this Agreement that:

            (i)   the execution of Relevant Documents to which it is a party and
                  the performance of the terms thereof by it have been duly
                  authorised by it and that such Relevant Documents constitute
                  its legal, valid and binding obligations, enforceable against
                  it in accordance with their terms, subject as to
                  enforceability to bankruptcy or other similar laws of general
                  applicability relating to or affecting creditors' rights;

            (ii)  the execution and delivery by it of the Relevant Documents and
                  the performance by it of the terms of such Relevant Documents
                  will not


                                       7


                  infringe any existing law or regulation and are not contrary
                  to the provisions of its Memorandum and Articles of
                  Association;

            (iii) all consents and approvals of any court, government department
                  or other regulatory body in any jurisdiction to which it is
                  subject, required for the execution and delivery by it of the
                  Relevant Documents and the performance by it of the terms of
                  such Relevant Documents have been obtained and are in full
                  force and effect; and

            (iv)  it is duly incorporated as a public limited company under the
                  laws of England and Wales.

      (b)   The Issuer represents and warrants to the other parties to this
            Agreement as at the date of this Agreement that:

            (i)   the execution of the Relevant Documents, the Transaction
                  Documents to which it is a party and the performance of the
                  terms thereof by it have been duly authorised by it and on the
                  Closing Date such Relevant Documents and the Transaction
                  Documents constitute its legal, valid and binding obligations,
                  enforceable against it in accordance with their terms, subject
                  as to enforceability to bankruptcy or other similar laws of
                  general applicability relating to or affecting creditors'
                  rights;

            (ii)  the execution and delivery by it of the Relevant Documents and
                  the Transaction Documents and the performance by it of the
                  terms of such Relevant Documents and the Transaction Documents
                  will not (A) conflict with, or result in a breach of, any of
                  the terms or provisions of, or constitute a default under, the
                  Memorandum and Articles of Association of the Issuer or any
                  agreement or instrument to which the Issuer is a party or by
                  which any of its assets or properties is bound, or (B)
                  infringe any applicable law or regulation;

            (iii) all consents and approvals of any court, government department
                  or other regulatory body in any jurisdiction to which it is
                  subject, required for the execution and delivery by it of the
                  Relevant Documents and the performance by it of the terms of
                  such Relevant Documents have been obtained and are in full
                  force and effect;

            (iv)  it is duly incorporated as a public limited company under the
                  laws of England and Wales;

            (v)   the creation, sale and issue of the Class A4 Notes have been
                  duly authorised by the Issuer and, when executed and
                  authenticated in accordance with the Fifth Supplemental Issuer
                  Trust Deed and the Issuer Paying Agent and Agent Bank
                  Agreement, the Class A4 Notes will constitute legal, valid and
                  binding obligations of the Issuer enforceable against the
                  Issuer in accordance with their terms, subject as to
                  enforceability to bankruptcy or other similar laws of general
                  applicability relating to or affecting creditors' rights; and


                                       8


            (vi)  no event has occurred or circumstance arisen which, had the
                  Class A4 Notes already been issued, would constitute a Note
                  Event of Default as set out in the Terms and Conditions of the
                  Class A4 Notes.

3.2   Representations and Warranties of the Conditional Purchaser

      (a)   The Conditional Purchaser represents and warrants to the other
            parties to this Agreement that it has the requisite power and
            authority to enter into each Relevant Document to which it is a
            party on the terms on which it is made and all requisite corporate
            authority has been taken for it to enter into such agreement and to
            perform the matters envisaged thereby at the requisite time and such
            agreement will constitute a valid and legally binding obligation,
            enforceable against the Conditional Purchaser in accordance with its
            terms, subject as to enforceability to bankruptcy or other similar
            laws of general applicability relating to or affecting creditors'
            rights; and

      (b)   The Conditional Purchaser represents and warrants to the Issuer and
            Northern Rock that the Specified Disclosure did not as of the date
            of the Final Prospectus (or, in the case of the Revised Preliminary
            Prospectus, as of the Time of Sale (as defined in the Underwriting
            Agreement)) and will not, as of the Closing Date, contain an untrue
            statement of a material fact or omit 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.

      "Specified Disclosure" means the information contained under the headings
      "The conditional purchaser" and "The issuer swap provider" in each of the
      Revised Preliminary Prospectus and the Final Prospectus provided by
      Barclays Bank PLC to the Issuer for inclusion therein.

4.    UNDERTAKINGS

4.1   (a) Northern Rock undertakes to the Conditional Purchaser that it will:

            (i)   indemnify and hold harmless the Conditional Purchaser on an
                  after tax basis (and each of its officers, directors or
                  employees and each person who controls the Conditional
                  Purchaser within the meaning of either Section 15 of the
                  Securities Act or Section 20 of the Exchange Act) from and
                  against any claim, demand, action, liability, damages, cost,
                  loss or expense (including, without limitation, legal fees to
                  the extent permitted by Clause 4.3 and any applicable value
                  added tax) which it may incur as a result or arising out of or
                  in relation to any inaccuracy or alleged inaccuracy contained
                  in, or any breach or alleged breach of, any of the
                  representations and warranties in Clause 3.1; and

            (ii)  furnish to the Conditional Purchaser on the date hereof a copy
                  of the Final Prospectus certified by a duly authorised officer
                  of the Issuer and, without charge, such additional number of
                  copies of the Final Prospectus as the Conditional Purchaser
                  may reasonably request.

      (b)   The Conditional Purchaser undertakes to indemnify and hold harmless
            Northern Rock, its directors, officers, employees and agents and
            each person


                                       9


            who controls Northern Rock within the meaning of either Section 15
            of the Securities Act or Section 20 of the Exchange Act against any
            claim, demand, action, liability, damages, cost, loss or expense
            (including, without limitation, legal fees to the extent permitted
            by Clause 4.3 and any applicable value added tax), which it may
            incur as a result or arising out of or in relation to any inaccuracy
            or alleged inaccuracy contained in, or any breach or alleged breach
            of, any of the representations and warranties in Clause 3.2(b).

      (c)   The Issuer Cash Manager undertakes that it will:

            (i)   notify the Remarketing Bank and the Conditional Purchaser on
                  the fifth (5th) Business Day prior to each Transfer Date by
                  10:00 am (London time) if any of the conditions specified in
                  Clause 2.2(d) has not been satisfied;

            (ii)  on the fifth (5th) Business Day prior to each Transfer Date by
                  10:00 am (London time) provide notice to the Remarketing Bank
                  and the Conditional Purchaser as to whether or not there will
                  be sufficient Issuer Available Revenue Receipts to pay all
                  amounts of interest on the Class A4 Notes scheduled to be paid
                  on such Transfer Date;

            (iii) notify the Conditional Purchaser as soon as it becomes aware
                  of any downgrade of the rating of the Class A4 Notes by any
                  Rating Agency, and of any notice received from a Rating Agency
                  advising that the Class A4 Notes have been placed under review
                  for possible downgrade; and

            (iv)  notify the Conditional Purchaser of the occurrence of a Note
                  Event of Default within ten (10) Business Days of obtaining
                  actual knowledge thereof.

4.2   If any claim, demand or action is brought or asserted under Clauses
      4.1(a)(i), 4.1(a)(iii) or 4.1(d) (each a "Claim"), the following
      provisions shall apply:

      (a)   Notification: the Conditional Purchaser or Northern Rock, as the
            case may be (the "Indemnified Person") shall promptly notify
            Northern Rock or the Conditional Purchaser, as the case may be (the
            "Indemnifying Party") as soon as reasonably practicable after
            becoming aware of a Claim (but failure to do so shall not relieve
            the Indemnifying Party from liability);

      (b)   Assumption of defence: the Indemnifying Party shall, subject to
            Clause 4.4, be entitled to assume the defence of the relevant Claim
            including the retention of legal advisers approved by each
            Indemnified Person (which shall not be unreasonably withheld or
            delayed), subject to the payment by the Indemnifying Party of all
            legal and other expenses of such defence; and

      (c)   Separate representation: if the Indemnifying Party assumes the
            defence of the relevant Claim, each Indemnified Person shall be
            entitled to retain separate legal advisers and to participate in
            such defence but the legal or other expenses incurred in so doing
            shall, subject to Clause 4.4, be borne by such Indemnified


                                       10


            Person unless the Indemnifying Party has specifically authorised
            such retention or participation.

4.3   Notwithstanding Clause 4.2, the Indemnified Person may retain separate
      legal advisers in each relevant jurisdiction and direct the defence of the
      relevant Claim. The Indemnifying Party shall reimburse the Indemnified
      Person for any legal or other expenses reasonably so incurred if:

      (a)   Indemnifying Party's failure: the Indemnifying Party (having assumed
            such defence) fails properly to make such defence or to retain for
            such purpose legal advisers approved by such Indemnified Person;

      (b)   Conflict of interest: such Indemnified Person has reasonably
            concluded that the use of any legal advisers chosen by the
            Indemnifying Party to represent such Indemnified Person would
            present such legal advisers with a conflict of interest; or

      (c)   Different defences: the actual or potential defendants in, or
            targets of, such Claim include both the Indemnifying Party and such
            Indemnified Person and such Indemnified Person has reasonably
            concluded that there are legal defences available to it which are
            different from or additional to those available to the Indemnifying
            Party.

4.4   The Indemnifying Party shall not, without the prior written consent of the
      Indemnified Person, settle or compromise, or consent to the entry of
      judgement with respect to, any pending or threatened Claim (irrespective
      of whether any Indemnified Person is an actual or potential defendant in,
      or target of, such Claim) unless such settlement, compromise or consent
      includes an unconditional release of each Indemnified Person from all
      liability arising out of the matters which are the subject of such claim.
      The Indemnifying Party shall not be liable to indemnify any Indemnified
      Person where the relevant Claim has been settled or compromised without
      its written consent (which shall not be unreasonably withheld).

4.5   The rights and remedies conferred upon the Conditional Purchaser under
      this Clause shall continue in full force and effect notwithstanding the
      completion of the arrangements set out herein for the purchase of, and
      payment for, the Class A4 Notes and regardless of any investigation made
      by the Conditional Purchaser.

5.    CLOSING OF CONDITIONAL PURCHASE

5.1   Payment

      As soon as is practicable in the working day in New York on each Transfer
      Date on which the Conditional Purchaser is required to purchase
      Unremarketed Notes, the Conditional Purchaser will pay or cause to be paid
      to or at the direction of the Remarketing Bank the Transfer Price in
      respect of the Unremarketed Notes specified in the Conditional Purchase
      Activation Notice applicable to such Transfer Date. The Remarketing Bank
      will hold the Transfer Price in the manner contemplated by Clause 3.13 of
      the Remarketing Agreement pending completion of the transfer of the
      Unremarketed Notes in accordance with Clause 5.2.


                                       11


5.2   Transfer

      The Remarketing Bank will procure the transfer of interests in the
      Unremarketed Notes to the Settlement Account and will hold those interests
      in accordance with Clause 3.13 of the Remarketing Agreement and deliver
      them to the Conditional Purchaser against payment of the relevant Transfer
      Price.

6.    [RESERVED]

7.    TERMINATION OF THIS AGREEMENT

7.1   Termination of this Agreement

      Notwithstanding anything contained herein, this Agreement shall terminate
      when the Conditional Purchase Commitment terminates by virtue of Clause
      2.2(e).

7.2   Consequences of Termination of this Agreement

      Upon such termination in accordance with Clause 7.1 this Agreement shall
      terminate and be of no further effect and no party shall be under any
      liability to any other in respect of this Agreement, except that (i)
      Northern Rock shall remain liable under Clause 4.1(a)(i) to indemnify the
      Conditional Purchaser in accordance with the terms thereof for any breach
      of any representation or warranty provided such breach has occurred prior
      to the termination of this Agreement; and (ii) the indemnities provided by
      Northern Rock in Clause 4.1(a)(i) and by the Conditional Purchaser in
      Clause 4.1(b) shall not so terminate.

8.    TRANSFER

      (a)   By written notice to Northern Rock and the Remarketing Bank, the
            Conditional Purchaser may at any time after the date of this
            Agreement transfer to any Person having short-term debt ratings of
            A-1+ by Standard & Poor's, P-1 by Moody's and F1+ by Fitch as at the
            date of such transfer (each such Person, an "Eligible Transferee")
            all of its rights and obligations under this Agreement (including,
            without limitation, all of its Conditional Purchase Commitment). The
            Conditional Purchaser may not transfer any of its rights or
            obligations hereunder without:

            (i)   the prior written consent of Northern Rock and the Remarketing
                  Bank; and

            (ii)  a confirmation from each Rating Agency that the then current
                  ratings of the Class A4 Notes will not be downgraded or
                  withdrawn as a result of such transfer.

      (b)   Subject to the satisfaction of the conditions set forth in Clause
            8(a), from and after the effective date specified in the written
            notice given by the Conditional Purchaser to Northern Rock and the
            Remarketing Bank:

            (i)   the transferor Conditional Purchaser shall be released from
                  further obligations under this Agreement and its rights under
                  this Agreement shall be cancelled;


                                       12


            (ii)  the Eligible Transferee shall acquire the same rights and
                  assume the same obligations in place of the transferor
                  Conditional Purchaser expressed to be the subject of the
                  transfer in the written notice given by the Conditional
                  Purchaser; and

            (iii) the Eligible Transferee shall become a party hereto as the
                  "Conditional Purchaser", and all references to the Conditional
                  Purchaser shall be construed accordingly.

9.    TIME

      Any date or period specified herein (excluding, subject to extension
      pursuant to Clause 2.1, the Conditional Purchase Commitment Period) may be
      postponed or extended by mutual agreement among the parties but, as
      regards any date or period originally fixed or so postponed or extended,
      time shall be of the essence.

10.   COMMUNICATIONS

      Any communication shall be given by letter, or by telex or facsimile
      transmission, or by telephone and shall be sent:

      (a)   if to the Issuer, to it at:

            Granite Master Issuer plc
            Fifth Floor
            100 Wood Street
            London EC2V 7EX

            Fax:              +44 (0) 20 7606 0643
            Attention:        The Company Secretary

      (b)   if to Northern Rock or to the Issuer Cash Manager, to it at:

            Northern Rock plc
            Northern Rock House
            Gosforth
            Newcastle upon Tyne  NE3 4PL

            Fax:              +44 (0) 191 279 4929
            Attention:        Securitisation, Risk Operations

      (c)   if to the Conditional Purchaser, to it at:

            Barclays Bank PLC
            5 The North Colonnade
            Canary Wharf
            London E14 4BB

            Fax:             +44 (0) 20 7516 7280
            Attention:        Rob Ford, ABS Trading


                                       13


      (d)   if to the Remarketing Bank, to it at:

            Barclays Capital Inc.
            200 Park Avenue
            New York New York 10166

            Fax:              +1 (1) 212 4127305
            Attention:        Craig Leonard, ABS Syndicate

      Any such communication shall take effect, in the case of a letter, at the
      time of delivery, in the case of telex or facsimile transmission, at the
      time of dispatch or, in the case of telephone, when made.

      Any communication not by letter shall be confirmed by letter but failure
      to send or receive the letter of confirmation shall not invalidate the
      original communication. No communication pursuant to Clauses 2.1 or 2.2
      may be made other than in writing, including via facsimile, and will be
      deemed received on actual receipt by the Conditional Purchaser.

11.   NON-PETITION AND LIMITED RECOURSE

11.1  Each of the parties hereto (other than the Issuer) undertakes to the
      Issuer that it shall not, until the expiry of one year and one day after
      the payment of all sums outstanding and owing under all Notes issued by
      the Issuer from time to time, take any corporate action or other steps or
      legal proceedings for the winding up, dissolution, arrangement,
      reconstruction or reorganisation or for the appointment of a liquidator,
      receiver, manager, administrator, administrative receiver or similar
      officer of the Issuer or any or all of its assets or revenues, petition or
      commence proceedings for the administration or winding-up of the Issuer
      (nor join any person in such proceedings or commencement of proceedings)
      nor commence any legal proceedings against the Issuer.

      The provisions of this Clause 11.1 shall survive the termination of this
      Agreement.

11.2  To the extent permitted by law, no recourse under any obligation, covenant
      or agreement of any person contained in this Agreement shall be had
      against any shareholder, officer, agent, affiliate or director of the
      Issuer, by the enforcement of any assessment or by any legal proceedings,
      by virtue of any statute or otherwise; it being expressly agreed and
      understood that this Agreement is a corporate obligation of the Issuer
      expressed to be a party hereto and no personal liability shall attach to
      or be incurred by the shareholders, officers, agents, affiliates or
      directors of such person as such, or any of them, under or by reason of
      any of the obligations, covenants or agreements of the Issuer contained in
      this Agreement, or implied therefrom, and that any and all personal
      liability for breaches by such person of any such obligations, covenants
      or agreements, either under any applicable law or by statute or
      constitution, of every such shareholder, officer, agent, affiliate or
      director is hereby expressly waived by each person expressed to be a party
      hereto as a condition of and consideration for the execution of this
      Agreement; provided, however, that the foregoing shall not relieve any
      such person or entity of any liability they might otherwise have as a
      result of wilful misconduct or fraudulent actions or omissions taken by
      them.


                                       14


      The provisions of this Clause 11.2 shall survive the termination of this
      Agreement.

12.   COUNTERPARTS

      This Agreement may be executed in any number of counterparts and by
      different parties hereto on separate counterparts each of which, when
      executed and delivered, shall constitute an original, but all the
      counterparts shall together constitute but one and the same instrument,
      provided, however, that this Agreement shall have no force or effect until
      it is executed by the last party to execute the same and shall be deemed
      to have been executed as delivered in the place where such last party
      executed this Agreement.

13.   GOVERNING LAW AND JURISDICTION

13.1  Governing Law

      This Agreement shall be governed by and construed in accordance with
      English law.

13.2  Jurisdiction

      The courts of England are to have jurisdiction to settle any disputes
      which may arise out of or in connection with this Agreement and
      accordingly any legal action or proceedings arising out of or in
      connection with this Agreement ("Proceedings") may be brought in such
      courts. The parties to this Agreement hereby irrevocably submit to the
      jurisdiction of such courts and waive any objection to Proceedings in such
      courts whether on the ground of venue or on the ground that the
      Proceedings have been brought in an inconvenient forum. This submission is
      for the benefit of each of the parties to this Agreement and shall not
      limit the right of any of them to take Proceedings in any other court of
      competent jurisdiction nor shall the taking of Proceedings in any one or
      more jurisdictions preclude the taking of Proceedings in any other
      jurisdiction (whether concurrently or not).

14.   CONTRACTS (RIGHTS OF THIRD PARTIES) ACT 1999

      A person who is not a party to this Agreement shall have no rights under
      the Contracts (Rights of Third Parties) Act 1999 to enforce any terms of
      this Agreement but this does not affect any rights or remedy of any person
      which exists or is available apart from that Act.


                                       15


In witness whereof, this Agreement has been entered into on the date stated at
the beginning.

GRANITE MASTER ISSUER PLC

(as Issuer)

By: /s/ Ian Bowden
    Ian Bowden
    Representing L.D.C. Securitisation Director No 1 Limited

NORTHERN ROCK PLC

By: /s/ CG

NORTHERN ROCK PLC
(as Issuer Cash Manager)

By: /s/ CG

BARCLAYS BANK PLC
(as Conditional Purchaser)

By: /s/ Louis E. Kelly

BARCLAYS CAPITAL INC.
(as the Remarketing Bank)

By: /s/ Michael Wade
    Michael Wade
    Managing Director


                                       16


                                   SCHEDULE 1
                            FORM OF EXTENSION REQUEST

                     [on letterhead of the Remarketing Bank]

                                                                          [DATE]

To: Barclays Bank PLC

Fax: +44 (0) 20 7516 7280
Attention: Rob Ford, ABS Trading

Ladies and Gentlemen:

We refer to the Conditional Purchase Agreement dated 19 September 2006 (as
amended from time to time, the "Agreement") among Granite Master Issuer plc, as
Issuer, Barclays Bank PLC (the "Conditional Purchaser"), Barclays Capital Inc.
(the "Remarketing Bank") and Northern Rock plc, in its individual capacity and
as Issuer Cash Manager. Terms and expressions defined herein shall bear the
meanings ascribed to such terms in the Agreement or, if not defined therein, in
the Programme Master Definitions Schedule referred to in the Agreement.

Pursuant to Clause 2.1(b) of the Agreement, we, as the Remarketing Bank, hereby
irrevocably request the Conditional Purchaser to extend the Conditional Purchase
Commitment Period to [ ].

                                        Yours faithfully,

                                        BARCLAYS CAPITAL INC., as Remarketing
                                        Bank



                                        By_____________________________

                                        Name:

                                        Title:


                                       17


                                   SCHEDULE 2
                           FORM OF NOTICE OF EXTENSION

                  [on letterhead of the Conditional Purchaser]

                                                                          [DATE]

Northern Rock plc, as Issuer Cash Manager
Northern Rock House, Gosforth
Newcastle upon Tyne  NE3 4PL

Barclays Capital Inc., as Remarketing Bank
200 Park Avenue
New York, New York 10166
Attention: Craig Leonard, ABS Syndicate

Ladies and Gentlemen:

We refer to the Conditional Purchase Agreement dated 19 September 2006 (as
amended from time to time, the "Agreement") among Granite Master Issuer plc, as
Issuer, Barclays Bank PLC (the "Conditional Purchaser"), Barclays Capital Inc.
(the "Remarketing Bank") and Northern Rock plc, in its individual capacity and
as Issuer Cash Manager. Terms and expressions defined herein shall bear the
meanings ascribed to such terms in the Agreement or, if not defined therein, in
the Programme Master Definitions Schedule referred to in the Agreement.

Pursuant to Clause 2.1(c) of the Agreement, we, as the Conditional Purchaser
hereby consent to the Extension Request dated [ ]. The new Conditional Purchaser
Commitment Period shall commence on [o] and end on [o].

                                         Yours faithfully,

                                         BARCLAYS BANK PLC, as Conditional
                                         Purchaser



                                         By_____________________________

                                         Name:

                                         Title:


                                       18


                                   SCHEDULE 3
                 FORM OF CONDITIONAL PURCHASE ACTIVATION NOTICE

                   [on the letterhead of the Remarketing Bank]

To: Barclays Bank PLC

Fax: +44 (0) 20 7516 7280
Attention: Rob Ford, ABS Trading

[Date]

Dear Sirs

Granite Master Issuer plc
$1,000,000,000 Class A4 Notes due 2054

All terms used herein shall have the meanings specified in or by reference to
the Conditional Purchase Agreement entered into on 19 September 2006 between,
inter alios, the Issuer, Northern Rock plc and Barclays Bank PLC (the
"Agreement").

In respect of the Transfer Date occurring on [ ], the Remarketing Bank delivers
this Conditional Purchase Activation Notice pursuant to Clauses 2.2(b) and
2.2(c) of the Agreement, and hereby confirms that:

(a)   there will be U.S.$[ ] aggregate Principal Amount Outstanding of
      Unremarketed Notes on such Transfer Date;

(b)   the Transfer Price on the above Transfer Date is U.S.$[ ] and is to be
      paid to the following account: [ ];

(c)   the Remarketing Bank has not received notice from the Issuer Cash Manager
      that any of the events specified in Clause 2.2(d) of the Agreement has
      occurred and is continuing and the Remarketing Bank is otherwise not aware
      that any of the events in such Clause 2.2(d) has occurred and is
      continuing;

(e)   the Unremarketed Notes to be purchased are identified in the schedule at
      the end of this notice; and

(f)   the Remarketing Bank will procure the transfer of interests in the
      Unremarketed Notes to the Settlement Account and will hold those interests
      in accordance with Clause 3.13 of the Remarketing Agreement and deliver
      them to you against payment of the Transfer Price.


                                       19


Yours faithfully,

BARCLAYS CAPITAL INC.

By:
    ---------------------------------------------------

Name:

Title:

Copy to:

Northern Rock plc, as Issuer Cash Manager
Northern Rock House, Gosforth
Newcastle upon Tyne  NE3 4PL

Fax:        +44 (0) 191 279 4929
Attention:  Securitisation, Risk Operations

Granite Master Issuer plc
Fifth Floor
100 Wood Street
London EC2V 7EX

Fax No:     +44 (0) 20 76060643
Attention:  The Company Secretary



SCHEDULE OF CLASS A4 NOTES TO BE PURCHASED:



                                       20