Constant began his first-class cricket career with Kent in 1961 before moving to Leicestershire in 1965 and playing there until 1968.
He was a middle-order batsman who made 67 first-class appearances.
[1] His umpiring debut match was the Third Test between England and Pakistan in July 1971.
He last stood in an international cricket match in the England v. Australia One Day International at The Oval, London in June 2001.
This biographical article related to an English cricket person born in the 1940s is a stub.