BBC Radio presenters Zoë Ball and Greg James, and The One Show host Alex Jones, are taking on 'epic challenges' to raise funds for Sport Relief 2018.

TV stars Les Dennis, Susannah Constantine, Tameka Empson and Miles Jupp will also be 'put through their paces' in a series of 'gruelling tasks' for BBC Two's Famously Unfit... for Sport Relief, airing in March, and Ball commented 'I feel honoured to be taking on such an epic challenge for Sport Relief and it means so much to me to raise awareness of mental health issues - a topic close to my heart. This will be an awesome adventure, with miles to cover, hills to climb and a lot of chafing!'.