Sean Carl Roland Pertwee (born 4 June 1964) is an English actor, narrator and producer with an extensive career since the 1980s in television and cinema productions.

He is known for the role of Sgt. Wells in the film Dog Soldiers, W.F. "Smitty" Smith in Event Horizon, Inspector Lestrade in CBS's Elementary and Alfred Pennyworth in Fox's Gotham. He is also the narrator of MasterChef: The Professionals and Zero Hour.

Early life
Pertwee was born on 4 June 1964 in Hammersmith, London, the son of the actor Jon Pertwee (who played the Third Doctor in Doctor Who) and his German second wife, Ingeborg Rhoesa. Playwright and screenwriter Roland Pertwee was his grandfather; his sister is actress Dariel Pertwee, and Dad's Army actor Bill Pertwee was a cousin.

Pertwee received his formal education at Teddington Boys' School in Richmond upon Thames and Sunbury College, Surrey.