Secret Eaters

Can siblings Jill and Stuart be able to stick to a ten-week diet regime in order to lose weight?

Anna Richardson present 24-hour surveillance of the Welwyn Garden City's Castle family's eating habits.

Dawn, Mike and Gareth want to find out why they're gaining weight.

The Meakin family doesn't know why they're gaining weight.

The White-Oliver family doesn't know how they're putting on weight.

Ronnie believes she only eats healthy snacks; Stuart thinks his diet is balanced.