WikiLeaks said Edward Snowden has left Hong Kong legally and is bound for an unnamed "democratic nation".
They added that the NSA whistleblower is being accompanied by diplomats and legal advisers and is travelling via a safe route for asylum purposes.
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Mr Blavatnik, whose empire includes the Warner Music Group, has an estimated fortune of £13.17bn according to the Sunday Times Rich List.
Find out what to expect from the weather if you are running in the big race in London or watching from the sidelines.
It will be a soggy start to the weekend and temperatures will drop making it feel colder than in recent days.