Getting out of a 172 might help also , you will find a 150 , 152 or even a PA38 much cheaper than that , more like 100 per hour depending where you go , I doubt I would have ever contemplated paying 182 per hour for training and I learnt at a large airport . All depends what ya want from it , if its purely receational then stick with NPPL or even PPL(M) Microlights are great fun and three axis ones are great fun and you may even end up owning one , but seriously why do you need to learn in a large four seater thats just chucking money away IMHO get your ppl in something small then do a check ride or two in somehting larger , I went for PA38 - PA28 - Cessna 172R - Cessna 172SP Garmin 1000 and Im sure youll find most peopel here trained in a small 2 seater, at the end of the day all things being well for 4500 quid you should have a PPL in your hand or be pretty damn close to it
Good luck