Conversation so far:
what radio station did Humphrey Lyttelton work for?
BBC Radio 2.
how long was he with them?
In 1972 Lyttelton was chosen to host the comedy panel game I'm Sorry.

Question: is that all that he did there?
Self-contained rewrite: Is the comedy show I'm Sorry all Humphrey Lyttelton did at BBC Radio 2?