NatWest bank has frozen the accounts of Russia's state-run broadcaster RT, its editor-in-chief says.
Margarita Simonyan tweeted: "They've closed our accounts in Britain. All our accounts. 'The decision is not subject to review.' Praise be to freedom of speech!"
RT says the bank gave no explanation for its decision.
It said the entire Royal Bank of Scotland Group, of which NatWest is part, was refusing to service RT.
The broadcaster, previously known as Russia Today, says NatWest wrote to its London office saying: "We have recently undertaken a review of your banking arrangements with us and reached the conclusion that we will no longer provide these facilities."
The bank said its decision was final and it is "not prepared to enter into any discussion."