Pre-tax profits at David Harding’s Winton Capital Group, one of Europe's largest hedge funds, more than doubled last year, while net inflows and positive performance pushed assets to nearly £30 billion. But the reversal of market trends in recent months has led to mixed performance for the firm’s flagship hedge fund in 2015.

Winton almost doubled its gross revenues from £326 million in 2013 to £635 million last year, according to the firm's latest annual report and results filed at Companies House, helping power pre-tax profits to £487 million from £221 million the year before.