Customers of banks including Lloyds, TSB, Halifax and Bank of Scotland were left unable to withdraw cash, after two Lloyds Banking Group servers went down.
Between 3pm and 6pm customers were unable to withdraw cash from Lloyds Banking Group ATMs or use their debit cards.
Some customers have taken to Twitter to express their frustrations after having their debit cards declined in stores.
TSB CEO Paul Pester replied to customers tweeted and apologised for the inconvenience caused by the technical problems:
He later told customers on Twitter that the problems had been resolved and apologised again to those who had problems:
Online and telephone banking were unaffected by these issues, and customers were still able to withdraw cash from other ATMs.
The spokeswoman was unable to say how many people were affected.