I determinedly avoid diet threads, as I'm an ex-anorexic with a residual tendency to get weird around eating if 'triggered'. Your title's very attention-grabbing, though, @Weightlosswonders!
OK, so I'm not going to recommend A Diet or any kind of weight-loss plan, for obvious reasons. I can offer a bit of encouragement and common sense, though.
At around 18 stone, your first couple of months should be the most rewarding. You're carting around twice as much weight as a 9-stone woman, so your energy requirement is high and all exercise is the equivalent of the 9-stone woman doing the same while holding 60kg of weights.
So, exercise. Walk more - an hour a day if you can, or even longer. Run, jump and dance as much as possible. If it isn't currently possible, start anyway and your capacity will increase. Get in the habit of moving: if you sit down a lot at home or work, get up every half an hour for a few stretches and/or a mini walk.
These are things you can easily give up for a few months:
✖ Milk and sugar in drinks;
✖ Spreads on bread;
✖ Milk drinks and fruit juice;
✖ Dressing on salad;
✖ Fried foods;
✖ Oily sauces. Don't use ready-made pasta sauces, make one without oil;
✖ Sugary fruit (bananas, figs, dates, sultanas);
✖ Fatty veg (avocadoes);
✖ Nuts;
✖ Any food that comes with a coating on;
✖ Confectionery, crisps and biscuits;
✖ Cream;
✖ Cheese (except cottage);
✖ Alcohol;
✖ Cut the fat off your meat before cooking. Use fish canned in water.
I'm not usually a fan of low-fat dieting but it won't hurt for a short while, and you're highly motivated.
Things you can consume with wild abandon:
✔Fruit & veg with high water content:
➕ celery,
➕ all leaves,
➕ tomatoes,
➕ peppers,
➕ carrots,
➕ cucumber,
➕ marrow, courgettes,
➕ aubergines,
➕ broccoli, cauliflower,
➕ melon,
➕ oranges, grapefruit,
➕ strawberries, blackberries (but not raspberries),
➕ fresh currants, or cook them with fake sugar;
✔ tea with lemon;
✔ black coffee;
✔ Bovril & Marmite drinks;
✔ zero-cal bottled drinks;
✔ cottage cheese;
Things to eat in average quantities:
✔ potatoes;
✔ wholewheat pasta;
✔ brown rice;
✔ crispbreads (Ryvita);
✔ meat, fish & eggs;
✔ apples & pears;
✔ grapes, plums, apricots, peaches;
✔ sweet potatoes;
✔ plain yoghurt.
Treats:
❓ dark chocolate, over 70% cocoa;
❓ jelly babies;
❓ bananas, figs, dates, sultanas;
❓ Pepperami.
Tbh, you shouldn't find this too hard and it should lead to losses of a stone or more a month in your first few months.
❗Here's my advice if you find you're climbing the walls at some point: GO SAVOURY AND GO LARGE! Something like fried bread with sausages will give you a 'satiated' feeling, far better than sugary stuff, and won't ruin everything if it's only once a fortnight or so. Same with chips (oven, not deep-fried) and fried eggs or something.
Great thing about all this is that it's fully sustainable - add your fats back in once you've lost your extra, have the odd biscuit or cake, and keep up the exercise regime you will have built up by then 😊