Richard Ayoade guides the Let's Get Medical team - a group of medical students - in this week's challenge. They may be used to studying the complexities of the human body, but the pressure of the mighty maze can turn even the brightest minds to mush.

This episode's team are The Science Nerds, proving that putting the words 'science' and 'nerds' in the name of your team isn't necessarily a guarantee of competence. Richard Ayoade oversees the antics.