The promise: 'The complete power-walking workout for a slimmer, fitter, you.' Lorraine said: "I've done just about every silly faddy diet there is and the only time that I've really lost weight and kept it off is by following a healthy eating plan and exercising."

Now: The GMTV presenter is struggling to keep walking off the pounds and has said she has lost and gained weight equivalent of three rugby players over the years. Today she is looking decidedly bigger than the size 12 she had reached after dropping a dress size.