The space shuttle Discovery has completed its final voyage piggybacking a NASA Shuttle Carrier Aircraft from the Kennedy Space Centre in Florida to its permanent retirement home at Smithsonian Air and Space Museum's Udvar-Hazy Centre in Virginia.
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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.