How serious are you?
If you're really serious, I can recommend low carbing. Just note that when you stop low carbing you will put weight back on.
Here's the plan:
3 days 'hard core' - no carbs (this is based on a plan by a guy called Stillman) and involves eating only lean meat/fish for 3 days. Maximum of 5g carbs each day. So that means cutting out tea/coffee if you drink it with milk. Your diet will consist of eggs, lean meat/fish only. No fat to be used in cooking of your meals. No alcohol.
After these 3 days, move onto Atkins Induction for the next 14 days = 20g of carbs each day, which should come only from salad and green vegetables such as broccoli, cabbage, cauliflower.
You should eat more fat during this period, and will be able to introduce cream, butter and cheese.
No alcohol during this period at all.
If you really want to lose a stone, if you follow this (which is for 17 days) you should lose at least half a stone - so you have another fortnight to lose the rest!
Atkins is very, very badly misrepresented in the media - his book The New Diet Revolution (or something like that) is really worth reading.
It isn't supposed to be a quick fix - but it should help you if you follow it for the next month!