Global adventurer Bear Grylls, will take actor, author and comedian David Walliams out of the glamorous world of showbiz and into the wild, for an ITV special, Bear’s Mission with David Walliams.

The funnyman and children’s writer - who judges others on their performances on Britain’s Got Talent - will himself be put under pressure, as he embarks on an adrenaline-fuelled mission testing his mental and physical limits, through one of the UK’s most spectacular landscapes.

David is pushed to the very edge of his abilities and tests his own fear of heights when he has to abseil down a cliff and climb up an old viaduct. David also reflects on his life, achievements and anxieties as he spends the day with Bear in the very heart of the Devon countryside.

Bear Grylls said: “David has accomplished some amazing endurance feats including swimming down the River Thames and across the English Channel. This mix of stamina and his unrelenting sense of humour, will make this a mission I’m sure we’ll both never forget. The wild awaits.”

David Harrison, Executive Producer for betty, added: “David Walliams is one of the UK’s best-loved actors, author and comedian and with his impromptu humour and spontaneity, there really is a sense that absolutely anything could happen.”

This 1 x 60 show is commissioned by Amanda Stavri, ITV Commissioning Editor, Factual Entertainment. It is a Bear Grylls Ventures/Electus/betty production for ITV. Electus International is distributing the programme internationally. The programme continues the Mission brand following on from two series of Bear Grylls: Mission Survive for ITV. The Executive Producer is David Harrison.