Stuart Organ, who starred as the longest-running Grange Hill star, has died. The actor’s representative confirmed the news about the 72-year-old, famed for playing the PE and geography teacher who was later promoted to headteacher in the children’s drama. Organ has also starred in Brookside, Casualty and Holby City. Hit show Grange Hill, which ran from 1978 to 2008, was known for its realistic and gritty storylines. More to follow…