I'm Sorry I Haven't a Clue was first broadcast on BBC Radio 4 in 1972. The original and much-loved chairman was Hymphrey Lyttelton, who continued in the role until his death in 2008.The original regular members of the panel were Tim Brooke-Taylor, Barry Cryer, Graeme Garden and (until his death in 1996) Willie Rushton. Following Humph's death, the programme returned in 2009 with a rosta of chairmen, current of whom is the now regular Jack Dee.