Exiled Russian oligarch Mikhail Khodorkovsky has told Sky News that Vladimir Putin "cronies" are influencing British politics.

He said: "Putin's clique use money in order to illegally put pressure on the British political system. And this is happening - directly, indirectly, via legal firms, via lobbying businesses, via directly influencing politicians and so on and so forth."

The former head of oil giant Yukos, Mr Khodorkovsky was once Russia's richest man before he fell out with Putin and was jailed.

He now lives in exile in London.

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