The Co-op has come out on top among customers - while Abbey, Barclays and the Clydesdale were found to have the worst service.
New customer satisfaction tables for financial institutions have been released by JD Power.
The market researchers found that, overall, customers of the Co-operative Bank were happiest with their services - while Abbey ranked bottom of the list for the second year in a row. Barclays and the Clydesdale Bank also came near the bottom of the list, while RBS and Nationwide challenged the Co-op for top spot.
Elsewhere in the report, it was shown that a total of 20 percent of bank customers complained about service this year. More happily, 71 percent of those polled by JD Power said that they thought their bank was not under financial threat, despite the well-publicised difficulties experienced by firms such as Northern Rock and, to a lesser extent, Bradford & Bingley.
Outsourcing of call centres by banks formed a particular locus of complaint; 85 percent of customers told researchers that they "preferred" dealing with a UK-based customer support team, rather than one based overseas.
Abbey's low ranking is likely to cause concern among mortgage customers, as the firm, owned by the Spanish Santander group, took over from HBOS as Britain's largest lender earlier this year. The firm is set to grow still further over months to come, with its planned £1.5 billion takeover of the Alliance & Leicester group.
Talking to the Guardian newspaper, a spokesperson said: "Abbey has showed an improvement on its 2007 score in this survey, but we are disappointed with this result and we will continue to work hard to improve our customer service."
