 Following his premature retirement, the club awarded Mendham a testimonial match against Real Sociedad, and he continued to work for the club for several years as 'Football in the Community Officer'.After his retirement from the professional game, Mendham continued to play non-league football, and scored the winning goal for Diss Town in the final of the 1994 FA Vase at Wembley.He worked as a fundraiser for a charity in East Anglia after he stopped playing.