Crumplin was born in
Bath, Somerset, in 1967, and spent his early childhood in
Singapore, where his soldier father was stationed, before the family settled in
Walberton,
West Sussex. He was on the books of
Southampton as a youngster, but his progress was interrupted by a broken leg, and he joined
Bognor Regis Town. After playing for Bognor's first team at 16, he spent time on the books of
Portsmouth, and returned to Bognor before signing for
Brighton & Hove Albion in March 1987. making his debut in a 2–1 home defeat against
Ipswich Town and supplied the cross from which
Steve Gatting headed Brighton in front. He took a few years to establish himself in the side, and was released at the end of the 1992–93 season, before re-signing for one final campaign in which he took his totals to 245 appearances and 9 goals, of which 207 and 7 were in league competition. He later played for
Crawley Town,
Selsey,
East Preston,
Three Bridges,
St Leonards,
Leweswhere he also acted as physiotherapistand
Crawley Down. He was
player-manager of Selsey, Three Bridges, and Crawley Down, and then managed
Ringmer, Crawley Down for a second spell, and
Walton and Hersham from 2009 to 2010 when he resigned for work reasons. == Honours ==