I've lost 6.5 kg (from 92.8) since June 22nd by keeping my daily calorific intake below 1000 and exercising between 10 - 22 kilometres on an exercise bike most days. Keeping off the beer too. The diet/book I've been following was written by a UK doctor and it's been pretty effective for me. Once I hit my target weight of 79 kg, I'll try to maintain it at that level. Avoiding processed foods is a major ingredient, along with a little self-discipline. The only drawback is that my trousers keep falling down. Time to resurrect what I was wearing ten years ago.