But gross mortgage lending was down 37 per cent at £19bn from January 2009 to September 2009 compared with £30.1bn in the same period last year.
Net lending was £5.1bn this year to date, representing a 31 per cent fall from £7.4bn during the same period last year.
Abbey estimates its gross lending market share was 20.5 per cent in the third quarter of this year. The loan to deposit funding ratio improved to 128 per cent compared with June 2008 when it was 169 per cent.
Three month plus arrears remained flat at 1.34 per cent compared to the Council of Mortgage Lenders average of 2.43 per cent.
The average loan to value on new business completions in the third quarter was 61 per cent compared to 62 per cent in the same period last year.
Parent group Santander says profits have been boosted by the acquisition of Alliance & Leicester and Bradford & Bingley.
Abbey and B&B will be rebranded to Santander in early 2010 while A&L will be rebranded in the fourth quarter of next year.
The integration of B&B systems has now been completed and the lender says it can now sell mortgages, current accounts and credit cards through B&B branches.
Santander says customers will be able to transact in over 1,300 branches across the UK by the end of next year.