The Grand Knockout Tournament (colloquially also known as It's a Royal Knockout) was a one-off charity event which was shown on British television on 19 June 1987. It followed the format of It's a Knockout, a slapstick TV gameshow which was broadcast in the UK until 1982. The event was staged on the lakeside lawn of the Alton Towers stately home-cum-theme park.
Prince Edward, Duke of Edinburgh
as Self
Prince Andrew, Duke of York
as Self
Anne, Princess Royal
as Self
Sarah Ferguson
as Self
Prince Richard, Duke of Gloucester
as Self
Rowan Atkinson
as Lord Knock of Alton
Barbara Windsor
as Lady Knock of Alton
Paul Daniels
as Chief Judge
Guy David Innes-Ker
as Self
Gerald Cavendish Grosvenor
as Self
John Cleese
as Self
Jenny Agutter
as Self