The RBS banking group has apologised after reports from customers of being unable to access accounts or withdraw money.

It came months after a major technical fault left millions of customers unable to withdraw cash.

RBS and its subsidiaries NatWest and Ulster Bank issued apologies via Twitter after customers reported problems with cash machines and cards being declined, accessing their accounts online and via telephone.

A statement tweeted by accounts run by all three banks said: "We are aware of the problems our customers are having and apologise, we will provide more information as soon as we have it."