11 stone for 5'9 is a good weight, given that I have very little muscle mass making up that figure. I don't particularly want to be buff but I would like to be agile/spritely.
Why hang about...? I need to get it off for summer so I don't feel so much like a human slug.
The reason to "hang about" is that your chance of lasting success is far higher.
You
might, with a lot of willpower, suffer through a harsh calorie deficit for a limited period of time and lose weight quickly. You'll feel worse and be weaker and when it's ended you will probably return to eating your normal diet. If you do so, you will gain excess fat and probably soon end up fatter than you were before. That's what often happens with dieting.
If, on the other hand, you change your lifestyle to something healthier that doesn't make you suffer, something you don't have to
endure, you are much more likely to make it into a new habit and thus stick with it. You'll lose weight more slowly, but you'll feel much better doing it and you're much more likely to avoid putting it back on.
I got rid of 22Kg very easily that way. All I did was reduce my intake of sugar and fat and generally eat less unhealthily, a bit at a time in steps that didn't bother me. A bit less sugar in coffee, a bit at a time as I became used to the changed taste until I had no sugar in my coffee. Sugary pop to diet pop to flavoured water. Bread to wholegrain rice (which tastes better, too). Not eating anything with more than 5% saturated fat...then 4%...then 3%. Just a bit at a time, changes that weren't something I was to endure for a limited time, with enough time between changes to established the new thing as a habit, my new normal. I'm not sure how long it took. Months, certainly. Six months? Eight months? Ten months? Doesn't matter.
Couple of years later and I'm still 27Kg below my high weight point. With hardly any effort and no suffering for it.
EDIT: One thing I found out that's not obvious is to ensure you drink enough. Apparently thirst and hunger are processed similarly enough in your brain for it to be quite possible to mistake one for the other, so you can mistake a need for water and a need for food and thus eat when you're actually a bit thirsty rather than a bit hungry. Since the food will contain water, eating will provide the water that was what you actually needed and thus work, but with a load of calories you didn't actually need.
Once I've got a bee in my bonnet someone is getting stung. Or... however that phrase goes.
Never wanted the game to end so much as I did tonight 
