Sian Williams is joined by dietician Linia Patel to investigate how low-fat sausages stack up in terms of calories, nutrition and cost. Tom Kerridge's Lose Weight for Good diet is road-tested by 49-year-old accountant Steve - will the Michelin-starred chef's calorie counting and low carb home-cooked meal plan make Steve's love of beer and takeaways a thing of the past? Plus, Dr Ranj Singh looks at appetite suppressants and the products which claim to suppress appetites and help people lose weight.