Sir Michael Gambon, brilliant actor who ranged from The Singing Detective to Dumbledore in the Harry Potter films – obituary

• Sir Michael Gambon, who has died aged 82, was one of the most powerful, subtle and compelling actors of the post-war period; in more than 50 years of show business he did everything from Shakespeare to television detectives and Hollywood blockbusters, including six Harry Potter films, winning admirers across generations.