I strongly recommend you discuss your options with your GP or even a private consultant in the UK to find which type of surgery, if any, is the best solution for you. There are many options, some of which are permanent and invasive.
When you know for sure what you want, then you get prices for the procedure in the UK and abroad. If you are morbidly obese and have other health problems such as diabetes you MAY be entitled to NHS treatment, then you can spend your money on removing the inevitable loose skin which many people find more distressing than the fat.