Its share by value of gross advances over the first half in UK mortgages was 14%.
Its UK Retail Banking profit before tax increased 61% to £504m, compared to £313m in 2009, including a £100m gain on the acquisition of Standard Life Bank and lower impairment charges, partially offset by margin compression as a result of the continued low interest environment.
The average LTV ratio of new mortgage lending was 51% and impairment charges decreased 14%, driven by low interest rates and improvements in the quality of new business.
As a result, net income grew 6% to £1,724m, compared to £1,630m in 2009.
Average mortgage balances grew 16%, and mortgage balances stood at £98.7bn at the end of the six months, compared to £87.9bn on December 31.
Its mortgage market share grew to 8%, up from 7% in 2009 .
Net mortgage lending was £3.3bn, compared to £2.2bn in 2009.
The average LTV of the mortgage portfolio including buy-to-let on a current valuation basis was 42%.