Sean Arnold (30 January 1941 – 15 April 2020) was an English actor. Arnold was born in January 1941 in Wickwar, Gloucestershire, England. He is best known for his roles as Mr. Llewelyn in Grange Hill in the 1970s and 1980s, and as Barney Crozier in the 1980s BBC television series Bergerac. He played Commander Telson in the 1981 BBC Radio 4 science fiction serialEarthsearch and the 1982 sequel Earthsearch II, and later appeared as the Chief Constable in Merseybeat. and he also voiced every character in the 1984 James the Cat series. He died in April 2020 at the age of 79.