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This week, the Professor of Ignorance John Lloyd and his curator Phill Jupitus welcome

Neil Innes, either a musical comedian or a comedy musician or possibly both. He was the third member of the surreal psychedelic jazz pop fusion combo the Bonzo Dog Doo Dah Band; is acknowledged as the seventh member of the Monty Python team; and was, according to some authorities, the 33rd member of the Beatles.

Dr Bradley Garrett, a writer, photographer urban explorer and researcher at Oxford University. He is perhaps the only academic whose studies have resulted in hanging onto a crane at the top of the Shard, being arrested on the tarmac at Heathrow for criminal damage and trespassing on private property over 300 times in more than eight countries.

Isabel Berncke, a scientist who grew up in the wild mountains of Chile but moved to the UK to study in London, Cambridge and Oxford. She's a doctor of cognitive and evolutionary anthropology, but her research interests include neuroscience, music, primatology, poetry, ethnology, complexity theory, behavioural ecology and hobbits.

This week, the Museum's Steering Committee discusses wrapping the Angel of the North up warm, penis fencing, the lowest-rated prime-time show in American TV history, London's secret rivers, what makes a tree laugh and why we should stupidity should be put in an institution.

The show was researched by James Harkin and Molly Oldfield of QI.

The producers were Richard Turner and Dan Schreiber.