There was a thing on "How to lose weight well" recently, which is a drip you go on for 10 days. It goes up your nose and into your tummy. You carry the bag of "liquid" on your back. The user we saw, lost about 1 stone each time she had a treatment. She did 5 treatments (I think). But, I have to say, it looked icky, uncomfortable and the dieter herself looked ill! And, it was expensive!
I lost 30lb using My Fitness Pal (get it free on-line). Just set up a profile, enter your height and weight and your desired weight, and it tells you how many calories you can eat a day. You then key in all the food you eat and all the exercise you do.
Broadly, if you consume 1200 kcals a day and walk 4 miles, you WILL reach your ideal weight in 5-6 months.
The key is to not go hungry (that's when you fail, imo)
So, pack the cupboards with:
Salad
Chicken breast
Weight watchers meals
Special K cereal bars (70 cals)
Walkers french fries (78 cals)
Snack a jack rice cakes (62 cals)
Cheese trangles (25 cals)
Ryvita crackers (38 cals)
Batchelors cup-a-soups (95 cals)
Batchelors Mugfulls or Mugshots (192-260 cals)
Quavers crisps (85 cals)
Crumpets (98 cals)
Thins (100 cals)
Instead of sausage and mash, have Venison sausages (57 cals each) and root mash (much lower cal than mash potato).
Oh and only consume alcohol a max of 2 days per week.