On the hottest day of last year, whilst Andy Murray was becoming Britain's first men's singles Wimbledon champion for 5000 years, adventurers, explorers, scientists boffins and eccentrics gathered in the Guildhall, Cambridge, to face off against one another in a competition of nerves and derring-do.......and biscuit dunking

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…