Ian Cassan Messiter was a BBC Radio producer and the creator of a number of panel games, including Just a Minute, and Many a Slip. He was also the Programme Associate on Family Fortunes. Messiter was born in Dudley, Worcestershire and educated at Sherborne School in Dorset. He acted as whistle blower on both One Minute Please and Just a Minute. He published his autobiography My Life and Other Games in 1990.
Apart from game shows, Messiter wrote several plays for the BBC, including Mr Drake's Duck, a comedy which was filmed in 1950 with Douglas Fairbanks Jnr as the star.