Dominique, a 17-year-old teenager who weights just over 18 stone, embarks on six weeks of dieting and exercising in an attempt to shed the pounds.

Lucy, 18, and her mum agree to a wholesale lifestyle change to help Lucy get her habit of comfort eating in control, having gained over three stone in two years.

Nineteen-year-old TJ from Folkestone weighs in at over 19 stone, and is worried that if he doesn't act now, his younger brothers will follow in his footsteps.