A spokesperson for NatWest has said that they have solved their earlier computer glitches:
Online banking is now fully operational and debit card transactions are processing as normal.
We continue to monitor the systems closely and will keep our customers fully informed.
We apologise for any inconvenience caused.
NatWest and Nationwide say they have solved their earlier computer glitches that had affected customers' accounts.
Britain's biggest building society has admitted it has problems with customer accounts after some were debited twice by mistake.