Exhibit 20.1 ARRAN FUNDING LIMITED - SERIES 05-A FORM OF MONTHLY SERVICER'S REPORT Bloomberg Ticker Number: ARRAN2005 Arran Funding Limited - Series: 05-A ABS - Credit Card - Bank, Closing Date: December 15, 2005 As at: May 15, 2006 RATING (S&P/Moodys/Fitch) POOLFACTOR PAY COUPON TRANCHE CURRENCY ORIGINAL CURRENT ORIGINAL CURRENT FREQUENCY BASIS CURRENT - ---------------------------------------------------------------------------------------------------------------------------- Class A USD AAA /Aaa/AAA AAA /Aaa/AAA 100% 100% Monthly 1 Mth LIBOR + 0.02% 4.92125% Class B USD A/A1/A A/A1/A 100% 100% Monthly 1 Mth LIBOR + 0.18% 5.08125% Class C USD BBB/Baa2/NR BBB/Baa2/NR 100% 100% Monthly 1 Mth LIBOR + 0.32% 5.22125% Scheduled start of Controlled Accumulation Period: 1 June, 2007 Expected maturity: 15 December, 2008 Legal final maturity: 15 December, 2010 Structure: Sr/sub Seq Pay Tax Election: Debt Amort. Type: Soft Bullet Transferors: The Royal Bank of Scotland plc / National Westminster Bank plc Originators: The Royal Bank of Scotland plc / National Westminster Bank plc Servicer: RBS Cards, a division of The Royal Bank of Scotland plc Trustee: Bank of New York (The) Underwriter: The Royal Bank of Scotland plc Pool Performance Month end Gross Expense Gross Charge Excess Excess Transferor Interest Yield (%) Rate (%) Off Rate (%) Spread (%) Spread (%) % Min % Roll 1/4 Ave 30 Apr 2006 16.60% 4.96% 5.72% 5.92% 6.36% 41.51% 6% 31 Mar 2006 20.15% 6.03% 7.25% 6.87% 6.79% 41.18% 6% 28 Feb 2006 16.86% 5.09% 5.48% 6.29% N/A 43.52% 6% 31 Jan 2006 18.43% 5.46% 5.77% 7.19% N/A 44.22% 6% 31 Dec 2005 18.30% N/A 5.77% N/A N/A 45.42% 6% Note: Bonds were issued on 15th December 2005; expense rate and excess spread for December have therefore been omitted as not meaningful. Delinquencies (Principal receivables which are 30 days or more past due) (% Pool) --------------------------------------------------------- Month end 30-59 days 60-89 days 90-179 days 180+ days Total - --------- ---------- ---------- ----------- --------- ----- 30 Apr 2006 1.32% 0.98% 2.30% 3.28% 7.88% 31 Mar 2006 1.25% 0.96% 2.27% 3.17% 7.65% 28 Feb 2006 1.27% 0.92% 2.19% 3.07% 7.46% 31 Jan 2006 1.21% 0.88% 2.15% 2.93% 7.17% 31 Dec 2005 1.12% 0.88% 2.06% 2.82% 6.88% Payment Rate Payments Pool balance --------------------------------- ------------ Month End Total ((pound)000) Rate (%) (pound)000 30 Apr 2006 977,762 19.57% 5,033,594 31 Mar 2006 1,302,500 24.99% 4,996,352 28 Feb 2006 1,071,000 20.31% 5,212,805 31 Jan 2006 1,239,187 23.00% 5,272,903 31 Dec 2005 1,200,032 22.34% 5,386,670 Average Actual Balance: (pound) 1,087 Number of Accounts: 4,629,817 IN WITNESS WHEREOF, the undersigned has duly executed this Monthly Servicer's Report as of the 15th day of May, 2006. The Royal Bank of Scotland plc, as Servicer By: Name: Patrick Neville Title: Director, Finance, Cards Business