Financial service business volumes have grown for the first time in two years.
PricewaterhouseCoopers and the Confederation of Business Industry (CBI) surveyed banks and building societies to show a 7% increase in the three months to early September.
PwC and the CBI said that future demand is still “a major concern”.
Out of the financial service businesses surveyed, 36% said they were more optimistic about their business situation than in June.
Andrew Gray, head of financial services consulting at PricewaterhouseCoopers, told the BBC: "For the first time since June 2007, banks are experiencing an upswing in confidence.
"Confidence is, in part, offset by concerns of further impairments and the impact of 'tougher' regulation."