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Jo Brand's Hell of a Walk is a raw and revealing documentary following the 58-year-old comedian as she attempts to walk across the width of England for Sport Relief in just one week.

Jo admits she is not athletic, but she has decided to take up the walking challenge to inspire all the overweight middle-aged women across the nation and to raise money for a range of causes funded by Sport Relief that matter to her personally.

Suffering from extreme fatigue, she battles through the biting cold, gale-force winds of over 70mph and torrential rain. It is a hellish week where Jo is tested to the limit, both physically and mentally. But she still summons the energy to share a joke or two with friends Davina McCall, Bill Bailey, Lee Mack, Alan Davies, John Bishop and Gabby Logan.