George A. Cooper
From Tardis Wiki, the free Doctor Who reference
George A. Cooper played Cherub in the Doctor Who story The Smugglers.
He is best known for playing Mr Griffiths in Grange Hill and Geoffrey Fisher in Billy Liar. His other television roles included roles on Danger Man, Taxi!, The Plane Makers, Coronation Street, Sergeant Cork, Softly, Softly, The Wednesday Play, No Hiding Place, Man in a Suitcase, The Avengers, The Saint, Randall and Hopkirk (Deceased), Doomwatch, Armchair Theatre, Z-Cars, Play for Today, Dixon of Dock Green, The New Avengers and All Creatures Great and Small.