Rival dieters compete to tackle head on the main reason for diet failure, lack of motivation
Happy shopper and London doctor Harriet takes on frugal vegan eco warrior Jo from the Isle of Wight. And the loser must pay out for the winner's treat.
Harriet and Jo: London doctor Harriet takes on frugal vegan eco warrior Jo from the Isle of Wight
Debs and Wendy: Minibus driver Debs meets Wendy, who has been drawing benefits for seven years
Kev vs Kevin: Sixty-year-old psychic Kev goes up against adamant sceptic Kevin in the latest diet battle