 In 2011, he returned to football as assistant manager at Newmarket Town F.C..

Mendham came through the youth ranks at Carrow Road, and played 267 first-team games (211 in the league), and scored 29 goals for the Canaries.He was forced to retire because of injury in 1987.He was a member of the Norwich teams that won the Football League Cup in 1985, and the Second Division championship in 1986.