Russia said it would also withdraw permission for Britain to open a general consulate in St Petersburg and would close the British Council in Russia.
Nikolay Glushkov, a friend of a Vladimir Putin critic who was found dead with a rope around his neck, was strangled, police said.
Stephen Hawking, the British theoretical physicist who defied the odds his entire life, has died, his family announced early Wednesday.
Prime Minister Theresa May says her government has concluded it is "highly likely" Russia is responsible for the poisoning of an ex-spy and his daughter.
Two British female entrepreneurs have joined forces to open a women-only private members club for professional women, The AllBright.
Jeremy Corbyn has got some 'splaining to do.