Supersize Cabbies

(BBC1, 7.30pm-8pm)

Following obese Plymouth taxi drivers Roger Laughton and Mike Davis as they take on a punishing regime of diet and exercise devised by Gavin Seymour. Mike is 20st and the challenge is about overcoming the overeating that started when he was bullied as a child for wearing a hearing aid, and he wants to be a fit dad as his first child is due any day.