Today, David is equipped with a hose pipe as he tests out whether the shelters he's asked the comedians to build are waterproof.

Later he challenges them to design a camp gadget: Ed Gamble and Lou Sanders clash over whether to go for a burglar alarm or a swing, whilst Jess and Jamali come up with a wooden television – but will David be convinced of its worth?

It's the Outsiders' last day living together in the wild. 
There's all to play for as the teams go all out to impress a sceptical David Mitchell and prove they can survive post apocalypse by making shoes from natural materials and herding animals.