A product of Brentford’s youth academy, Bush had various loan spells away from Griffin Park with Salisbury City, Woking, AFC Wimbledon and Thurrock, before joining newly promoted League Two side AFC Wimbledon permanently in June 2011. After just a single season with the Wombles, Bush struggled to nail down a long term home, spending single seasons with the likes of Gateshead, Hereford United, Welling United, Lincoln City and Chelmsford City between 2012 and 2017, before signing for Ebbsfleet United in August 2017.
After two seasons at Stonebridge Road, Bush moved to Kent neighbours Bromley, where he would spend three seasons with the Ravens, winning the FA Trophy in the process, before Wood secured the experienced defender’s signature on New Year’s Eve in 2022. Bush was called up to the England C squad in March 2024, captaining England’s Non-League representative side in their international friendly with Wales C.