The Island with Bear Grylls

In the ultimate test of endurance Bear Grylls abandons two groups, one of 8 men and one of 8 women, to see if they can survive on an uninhabited island armed with just the clothes they stand up in and a few basic tools.

Alone, and filming everything themselves, are the modern Britons resourceful enough to find food, water and shelter in order to survive?

In this third series both groups are abandoned on the opposite side of the same island and neither group knows the other is there. Will they find each other and if so will they work together and share the island's resources so that both groups thrive?