Sean Arnold (30 January 1941 – 15 April 2020) was an English actor. He is best known for his roles as Mr Llewelyn in the children's TV series "Grange Hill" and as Barney Crozier in the BBC series "Bergerac". He also appeared in TV's "James the Cat" and "Merseybeat". His movie credits include "North Sea Hijack" (1979), "Remembrance" (1982), "Haunters of the Deep" (1984), "Speaking of the Devil" (1991) and "Red Rose" (2004).