Although the course fees in the UK may be higher than elsewhere, the courses are shorter meaning that you can start to earn money sooner.
There are also many benefits available that can make your day-to-day life in the UK more affordable. By far the most important is the level of discounts negotiated by the National Union of Students. Students can save up to 50% on everything from books to entertainment. You can also borrow most of the books you'll need from the library.
It's worth noting, too, that if you study in the UK for six months or more, you qualify for free healthcare through the National Health Service. So there's no need to include the cost of health insurance in your budget.