Several customers of Revolut, the digital bank, have complained they have been locked out of their accounts for weeks.

Users have said that they cannot access their accounts, with others saying they can log in but not transfer money. Many of those affected said they are struggling to get a response from Revolut over the issue.

One reader told Telegraph Money that he had been locked out of his account since December 16. He pays for the firm's premium service yet has had no explanation why he cannot access his funds.