Russia on Monday said it was blacklisting 39 British citizens, including Labour Party leader Keir Starmer and former prime minister David Cameron.
London has been one of Kyiv’s most vocal supporters after President Vladimir Putin sent troops to Ukraine on February 24.
Russia’s foreign ministry said the citizens listed, including journalists, “contribute to the hostile course of London aimed at the demonisation of our country and its international isolation”.
“The choice in favour of confrontation is the conscious decision of the British political establishment, which bears all responsibility for the consequences,” the ministry added.
Moscow has banned several dozen British citizens — mostly politicians and journalists — from entering Russia since the start of its military campaign in Ukraine.
The new additions include several Labour MPs, Scottish politicians and members of the House of Lords.
Among the media, names are the head of the BBC’s newsgathering Jonathan Munro, TV presenter Piers Morgan and BBC News presenter Huw Edwards.
In a separate development on Monday, the General Prosecutor’s Office designated the Calvert 22 Foundation, a UK not-for-profit group, an “undesirable” organisation.
The group was founded in 2009 by a Russian-born economist, Nonna Materkova.
It published The Calvert Journal, an award-winning online magazine exploring the culture in Eastern Europe, the Balkans, Russia, and Central Asia. Its publication was suspended after Moscow sent troops to Ukraine.
The “undesirable organisation” tag, which is reserved for foreign groups, allows Russian authorities to ban their work in the country. It also carries the risk of fines or prison time for Russians working with the organisations.