A number of less expensive options are available.
Flex wing Microlight is probably the cheapest
3 axis Microlight . Modern well built and very practical aircraft....as long as you are not too lardy.
Qualify for NPPL
Another option is to learn to fly Gliders....possibly the best form of flying and lessons learnt are invaluable when flying powered aircraft.
Qualifications earned on gliders can be used against hours needed for PPL...although you would have to check the latest rules on this now EASA are the overseeing authority.
Post PPL , join the LAA and be in a group owned aircraft.