Royal Bank of Scotland said on Tuesday it is working to fix an IT problem that has left RBS and NatWest credit card customers unable to access their accounts and pay off balances.

RBS said: “Some customers are unable to view credit card information on online and mobile banking.

“We are also experiencing some problems with our telephony service for credit cards, which is limiting our ability to assist customers over the phone …

“We apologise for any inconvenience that this may cause …

“We are working to resolve these problems as quickly as possible.”