In a forty-year career, Stringer has appeared in numerous well-known British television shows, including The Bill, Bergerac , Open All Hours, Only Fools and Horses, Auf Wiedersehen, Pet, Coronation Street, Family Affairs, Minder, Johnny Jarvis, Butterflies, My Family and The Professionals.
Stringer appeared in the first two series of The New Statesman as the fictional Member of Parliament Bob Crippen, a Labour opponent of the Conservative Alan B'Stard.
He appeared in the BBC drama Holby City, in an episode entitled "Doctor's Dilemma", on 18 June 2008.
Stringer has also made two guest appearances in the BBC sitcom Only Fools and Horses, in the episodes "Go West Young Man" he plays an Australian and in "Who Wants to be a Millionaire", he plays Del's old business partner, Jumbo Mills, who emigrated to Australia.
In 2018, Stringer recorded a two-part interview for The Bill Podcast Neville Jury Foreman Jumbo Mills Sgt.