Well, I've tried almost every 'diet plan' going and few of them have worked. The one which worked best for me was Dr Dukan's: meaning, I lost most weight on it. It isn't meant to be long-term, though, and I really disliked not being able to have one slice of bread or any fruit at all in the early stages. Once I was past the early stages I stopped losing weight and, as Dr Dukan said, the weight started to creep back, little by little by little.
I've recently discovered a book by Dr Charles Clark 'The New High Protein Diet' and this makes more sense to me than anything. It does involve keeping carb intake very low. I can have my slice of wholemeal toast with butter but only one slice per day. I can have an orange daily for the Vitamin C, but only one. Basically, the rest of it is protein, normal fats like butter, eggs, and a lot of veg - no potatoes, of course.
I am giving this one month. We're going to an Anglo-Saxon dinner late May and we'd already chosen our food. I shan't have a glass of mead, though! And yesterday, St George's Day, I didn't have a glass of beer. Wine and spirits are apparently OK - a glass of red wine contains less than 1g of carbohydrate.