Playing most of his footballing career for West Ham United he appeared in 598 games for them, scoring 34 goals. With the club for 21 years, and winning the 1980 FA Cup Martin left West Ham in 1996 and played one season with Leyton Orient before moving into football management with Southend United. This lasted two seasons before he started a career in the media on radio station talkSPORT and also as a pundit on Sky Sports TV football talk shows.