Born in
Ipswich, Block began his career with the youth team at
First Division club
Chelsea and played in both legs of the
1958 FA Youth Cup Final. Block progressed to the Chelsea first team and made 40 appearances and scored six goals between 1957 and 1962. Block left Chelsea for
Brentford for £5,000 in January 1962. While with Brentford, he was the provider of
assists for many goals scored by the club's all-international frontline of
Johnny Brooks,
Billy McAdams and
John Dick. He later played for
Watford, before dropping into
non-League football with
Chelmsford City in 1967. ==Career statistics==