His most prominent television role was as strict deputy headmaster Maurice Bronson in the children's series Grange Hill, which he played between 1985 and 1989.

[8][1] Further to this, Sheard had guest roles in Colditz (1972), On the Buses (1973), Cloud Burst (1974), Space: 1999, the BBC's adaptation of the Lord Peter Wimsey story The Five Red Herrings (1975),[9] and as Dr. Arnold Anderson in Crown Court (1976).

In 1978, Sheard appeared in one episode ("Sleeping Partners", as the character Adderley) of the television series All Creatures Great and Small.

In 1983, he played Herr Grunwald, the German manager of a building site, in the first series of Auf Wiedersehen, Pet.

[16] Sheard died of cancer on 31 August 2005, aged 67, at his home on the Isle of Wight, leaving his wife, Rosalind Moir, whom he married in 1961, and three children; two sons: Simon and Rupert and a daughter, Susannah.