The link that Bewildered left you should be a good starting point for you.
I'm on my second attempt at the Newcastle Diet. If you stick with it you are pretty much guaranteed to lose weight.
The diet suggests you do it for 8 weeks but I got so into it I did it for 25 weeks first time round and lost 5 stone.
Back on it again after a 4 month break of low carb diet and been doing it now for 6 weeks and lost a stone so far. Won't do it so long this time round just the 8 weeks.
The weight loss has left me feeling great but the best thing is I am now in control of my blood sugars and have managed to come off all medication including insulin.
I stick fairly close to the diet, mines consists of:
1 x Shake in the morning, 1 x shake at lunch then a large plate of vegetables (broccoli, cauliflower and sprouts) for dinner.
I always add a small amount of Jordans Natural Wheat Bran to the shakes to help with fibre.
Give it a go - it seems a bit extreme at first but you soon realise you are doing it without feeling too hungry.
IT WORKS
PS I use the Tesco Ultra Slim Shakes but there are plenty of others available. As long as it gives 200 calories then it will be fine.