I think that's the case. From the UK's gov.uk site[0]: "It is illegal to pay directly for general transactions with dollars or Euros." [0] https://www.gov.uk/

I think that's the case. From the UK's gov.uk site[0]: "It is illegal to pay directly for general transactions with dollars or Euros." [0] https://www.gov.uk/foreign-travel-advice/russia/money https://www.gov.uk/foreign-travel-advice/russia/money