Martin Harris earned silver medal in the 100m backstroke at the 1993 FINA world short course championships in Palma and another bronze medal with the British team in the 4x100-metre medley relay at the 1997 FINA short course world championships. Martin won a silver medal as a member of the English team in the 4x100-metre medley relay, and 4th in the 100m backstroke at the 1998 Commonwealth Games in Kuala Lumpur, Malaysia.