Exhibit 10.4.2 EXECUTION VERSION START-UP LOAN TRANCHE SUPPLEMENT This Start-Up Loan Tranche Supplement is made between Northern Rock plc (the "Issuer Start-Up Loan Provider"), Granite Master Issuer plc ("Master Issuer") and the Bank of New York (the "Issuer Security Trustee") in relation to the provision of a Start-Up Loan Tranche by the Issuer Start-Up Loan Provider to the Master Issuer on the following terms: o Closing Date - 29 November, 2006 o Principal amount - GBP46,000,000 o Interest rate - LIBOR for three month sterling deposits plus 0.9 per cent. per annum o Payment Dates - Each Monthly Payment Date or, if such date is not a London Business Day, then the next following London Business Day This Start-Up Loan Tranche Supplement is supplemental to the Start-Up Loan Agreement dated 19 January, 2005, as the same may be amended from time to time, between the parties hereto (the "Start-Up Loan Agreement"). Capitalised terms used and not otherwise defined herein shall have the meanings assigned to them in the Start-Up Loan Agreement. This Start-Up Loan Tranche Supplement is made on 29 November, 2006. as Master Issuer EXECUTED for and on behalf of ) GRANITE MASTER ISSUER PLC ) acting by a director ) /s/ Michael Anthony Hutchinson - ----------------------------------- Name: Michael Anthony Hutchinson Representing L.D.C. Securitisation No 2 Limited Director as Issuer Start-Up Loan Provider EXECUTED for and on behalf of ) NORTHERN ROCK PLC ) by ) /s/ Christopher Jobe - ------------------------- Name: Christopher Jobe 1 as Issuer Security Trustee EXECUTED for and on behalf of ) THE BANK OF NEW YORK ) by ) /s/ Helen Kim - ----------------------------- Name: Helen Kim Vice President The Bank of New York 2