He is the majority owner and chairman of Premier League football club Brighton & Hove Albion, and investor in and minority shareholder of Belgian First Division A team Royale Union Saint-Gilloise.

Bloom won A$600,000 for his second-place finish in the High Rollers Challenge, Event #8 of the Australian Poker Millions tournament held in Melbourne in Jan 2009.

[7][8] Since 2009, Bloom has been the chairman of Brighton & Hove Albion, a pre eminent Premier League club, having gained promotion in the 2016–17 season after 34 years out of the top flight of English football.

[12] Bloom appointed former Uruguay international Gus Poyet as manager in November 2009, and together they led the team to promotion from Football League One as champions in 2011, the season before Brighton moved into their new home—Falmer Stadium.

The next manager was former Liverpool player Sami Hyypiä, who only lasted a few months in the managerial role after a poor start to the 2014–15 season left Brighton in the relegation zone.

Hughton steered Albion to safety in their 2014–15 campaign, and then guided the club to a 3rd-place position in the Championship in the following season, missing out on promotion to Middlesbrough on goal difference.

Brighton went one step further in the 2016–17 season under Hughton's management and Bloom's ownership, finishing second in the Championship and gaining promotion to the Premier League for the first time in the club's history.

Bloom was appointed Member of the Order of the British Empire (MBE) in the 2024 New Year Honours for services to association football and to the community in Brighton.

He became involved when the Brighton and Hove Hebrew Congregation faced financial difficulties, with funding for the project provided by the Bloom Foundation, where he serves as chairman.