Check out Kee Diet and also the avidlite webiste - they have various sorts of VLCDs. Starlight is right - you must choose something that is marketed as a vlcd - not just use meal replacement shakes for all meals. Go for an option that is high protein.
I do Alizonne which also includes ultrasound to target emptying fatcells and endermologie to tighten skin, and is GP supervised with regular blood tests - the deluxe version of a vlcd. The Alizonne sachets make ommlettes and other savoury foods, plus deserts and shakes. We eat salads at lunchtime and veggies each evening and loose at the same rate as S&S, CD, LL etc. We have 5 sachets a day - each around 100-110 calories each - every 2 to 4 hours.
Good luck with whatever you choose to do.
Ali