Willie Rushton he was an established guest on quiz shows and celebrity panel games: "Celebrity Squares", "Blankety Blank", "Countdown" and "Through the Keyhole". When asked why he appeared on these "ludicrous programmes", his answer was simple: "Because I meet everybody there". For 22 years until his death, he was a panellist in the long-running BBC Radio 4 panel comedy game show "I'm Sorry I Haven't a Clue", which he joined as a regular team member in the third series in 1974. In its later years, the show's wealth of silliness, smut and punning was drawing audiences of up to a thousand people
I'm Sorry I Haven't a Clue practice the seat and microphone were only used by the producer to welcome the audience, to introduce the participants and to give any other information to the audience such as the expected date of broadcasting, and to supervise re-recordings of fluffs made in the programme. Lyttelton would describe Samantha's social activities, usually in an apology received from the unseen character who had been detained, often with a "gentleman friend". His comments included sexual innuendo and double entendres, like "Samantha likes nothing better than a little potter in the woodshed in the morning", though many were far more daring and explicit.