Alan Howard, a co-founder of Brevan Howard, has joined a growing number of billionaires to have departed the UK since Labour came to power - Hollie Adams/Bloomberg Billionaire Tory donor Alan Howard has quit Britain for Switzerland, becoming the latest entrepreneur to leave in the wake of Rachel Reeves’s tax raid. The hedge fund tycoon, who founded Brevan Howard, shifted his residency to the low-tax haven earlier this year, according to filings seen by Bloomberg. He joins a growing number of billionair ...