Barclays awarded £2.38 billion in bonuses and other incentive awards to staff last year, up 10% from the £2.17 billion in 2012.
But the group's adjusted pre-tax earnings dropped by a quarter last year to £5.2 billion, falling short of analysts' forecasts.
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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.