I'm a bit dubious, but as I'm a bit of a diet virgin, I wasn't sure what one to do. I am particularly wanting to get rid of the excess flab around my middle, as hate my flab over flowing my jeans. Apparantly that's called a Muffin top, so just googled it. It came up with a Monica Grenfell diet, which was featured in Women's own.
As far as I can understand it, there are various studies that suggest that Calcium rich diets, and dairy rich diets can help you loose certain types of fat.Especially the fat around your organs around your middle, because of the way it's stored. But I did read some where, that most of these studies were sponsored by Dairy companies 
In any case it's only for a week, it is a low carb diet from the looks of it, with portions of natural yog and creme fraiche alongside veg/fruit, so I think it's unlikely to do any harm.
As any one tried something like this before?