Bear's Mission With

World heavyweight champion Anthony Joshua steps outside the ring and his comfort zone as he attempts to survive two days in the wild with Bear Grylls.

Rob Brydon spends two days in the wilderness of Snowdonia with Bear Grylls, as the pair jump into freezing water, abseil down sinkholes and travel deep inside an old mine.

Warwick Davis joins Bear Grylls for an adventure as Bear introduces him to rock-climbing, spear-fishing and an abseil down a cliff face at the Lake District.

Celebrities take on the great outdoors and try to survive two days in the wild with Bear Grylls as they put their survival instincts to the test.

Comedian David Walliams follows Bear Grylls across Devon's rugged valleys where they must push themselves to their physical limits to survive.