Exante

THE LOWDOWN: Enjoy a diet of shakes, bars, soups, desserts and meals while losing up to 10lb in a week.

HOW TO FOLLOW: There’s plenty of choice. Choose the Total Solution, replacing all meals with Extante products for two weeks (consuming up to 600 calories daily) or the Flexi Solution, replacing two meals a day for four weeks (at 1,200 daily calories).

COST: A four-week shake pack starts from £59.95 (exantediet.com).