A left-handed batsman tipped for high honours in his youth, Fosh decided against taking up a career in the county game.
[2][3][4] Fosh was educated at Harrow School, where he played in a band called Toyd, two members of which later found success in the 1980s as Red Box.
[10] After Cambridge, Fosh travelled for 18 months, then went to work in London in financial public relations and private client fund management for stockbrokers Strauss Turnbull and Carr Sheppards.
He founded futures and options broker SGF with a school friend, selling it in 2000 for a seven-figure sum; he left in 2002 and went to work at Lloyd's insurer SVB Holdings, where he became chief executive.
The couple have two children: daughter Talitha "Tally", and son Maximilian, a YouTuber and independent candidate in the 2021 London mayoral election.