What connects a Beatle, a Cricketer, and Average and a Herb? And what on earth (or even quite far above it) are Rob and Andrew doing in London?
Find out the answers to these questions, as well as others we've probably all wondered on many occasions, such as 'What connects Inspector Morse and Frank Spencer?' or 'Why might 1760 be the ideal number for puzzling mathematicians to think about ?' as as we join our presenters for their second outside broadcast, not just of this series but ever.
It's a cracker of an episode, just without the paper hat.