You can also get Cabbage Soup Diet tablets from Holland & Barretts, which I tried and lost loads of weight, but to be fair, probably far more than was good for me about 2.5 stone in less than 1 month and 3 weeks. (AND I had just split with a BF too, which didn't help).
they're about �8 and they fill you up so you're not hungry, but then it gives you the recipe in the accompanying leaflet for the actual soup which you have certain times a day.... and I thought it tasted quite nice.
Good luck! x