There are a number of ways of getting a license at low cost but they depend on having more money to start with. The cheapest solution I have seen is a chap who bought an LAA aircraft outright, based it at a "club" airfield and paid one of the instructors £12 per hour. He passed in minimum time, was still flying the same aircraft 5 years later and spent way less on actually learning than he would using a traditional approach. Cost him £60k up front though.
Rod1