Silicon Valley Investor Cohler Buys £22 Million London Mansion

A Silicon Valley investor who backed opponents of Donald Trump in last year’s elections has bought a London mansion for roughly £22 million ($30 million), in the latest sign the city’s beleaguered luxury market is getting some help from rich Americans.

Technology venture capitalist Matt Cohler purchased the detached house in Notting Hill at the end of April, marking one of London’s most expensive residential property transactions this year, according to a UK filing. Cohler didn’t respond to an email request seeking comment.

The deal is the latest example of how interest from wealthy Americans — including those who voiced ...