It seriously does. If you aren't going to a group then have a look at the sticky threads for the useful information about the plans. Stock up on free foods & snacks and eat yourself slim! It's just like any eating plan though, you have to want to do it. Slimming World is so easy but you have to make yourself change your old eating habits else it won't help at all.
A friend of mine lost a stone in 5 weeks doing SW, how fast you lose depends on how much you stick to the plan!