It's Only a Theory S01E04 - Episode 4

Comedians Andy Hamilton and Reginald D Hunter host a series in which qualified professionals and experts submit their theories about life, the universe and everything for examination by a panel of Hamilton, Hunter and a guest celebrity, who then make a final decision on whether the theory is worth keeping.

The guest celebrity is broadcaster Clare Balding and the experts are Prof Geoff Beattie and Marcus Chown.