Sesame, Openwork and Personal Touch saw the number of complaints against them rise in the final half of last year, according to data compiled by the Financial Conduct Authority (FCA).
Barclays bank has been named as the Financial Conduct Authority's (FCA's) most complained about firm for the second half of last year.
Robert Cochran, Key Account Pension Development Manager, Scottish Widows.
A quarter of UK bank customers have experienced problems with their account in the past 12 months, according to a survey by consumer group Which?.
The Financial Services Authority (FSA) blocked just 30 out of a possible 227,000 applications from individuals to join the financial sector in the six years since the banking crisis erupted, a rejection rate of just 0.01%.
High Financial Services Compensation Scheme (FSCS) levies are the result of legacy industry issues and will "begin to fall within two years", according to AWD Chase de Vere communications director, Patrick Connolly.
The Financial Conduct Authority (FCA) has published warnings to consumers about four trading companies that are not authorised to carry out regulated activities.
Tullett Prebon's chief executive Terry Smith wrote a letter to the International Swaps and Derivatives Association (ISDA) back in 2010 to question the rate setting process, but was ignored, the Telegraph reports.