Martin has been involved in Modern Pentathlon for more than 40 years. Originally as a competing athlete, representing the Spartan M.P. Club. He has held various roles within the association including Chairman of Competition Committees.
From 1978 to 1988 he was team manager of the G.B. Junior team, and from 1988 to 1996 manager of the GB Senior team and attended the Seoul, Barcelona and Atlanta Games. In total Martin has attended 7 Summer and Winter games in an official capacity.
He has been a member of the board of Pentathlon since 1984 and has been Vice Chairman (International Affairs) since 1998.
He was the executive Board member for marketing of Union International Pentathlon Moderne from 2000 to 2008 and was re-elected to that position at the 2012 Congress.
Martin has represented Modern Pentathlon on the National Olympic Committee since 2000 and was a member of the board of the British Olympic Association from 2009 to 2012.