INTERNATIONAL NEWS - Removal vans and diplomatic cars have been leaving the embassy in London.
The UK expelled 23 diplomats after Prime Minister Theresa May said Russia was "culpable" for the poisoning of Sergei Skripal and his daughter.
Later on Tuesday, the government will decide whether to impose further sanctions on Russia.
Mrs May is chairing a meeting of the National Security Council.
- What happens when you expel a diplomat?
- Russia stockpiling nerve agent - Johnson
- Putin ready for 'constructive' dialogue
- Spy poisoning: What we know so far
Moscow has denied all involvement, and is expelling 23 British diplomats in response. The UK diplomats have until Saturday to leave Russia.
The Kremlin is also closing down both the British Council in Russia, which promotes cultural ties between the nations, and the consulate in St Petersburg.
The Russian Embassy said around 80 people - including the Russian diplomats and their families - will leave London today, which is the deadline given by Mrs May.
A small crowd gathered outside the embassy and waved goodbye to people carrying suitcases, children and pets as they boarded vehicles.