The bank upped its lending by £1bn (3.9%) on the previous quarter.
TSB increased its mortgage lending by 28.3% year-on-year to £27.4bn in the first quarter of 2016.
The bank upped its lending by £1bn (3.9%) on the previous quarter.
However at the same time TSB doubled its profits on the previous quarter to £59.9m, a rise of 75% year-on-year.
The bank profited from a number of customers switching. Indeed 7.1% of all customers opening a bank account or switching chose TSB in the first quarter.
Paul Pester, chief executive of TSB, said: “We’ve seen a record growth in our customer deposits, a record number of people choosing TSB for their mortgage, and more customers than ever before willing to recommend TSB to friends and family.”