I've got a share in a cessna 150 at Barton Manchester. The share was £1300 (which I will get back when I sell it). I also have to pay £45 per month direct debit to the group. The 'wet' price per hour varies depending on fuel prices but has never been more than £55 per hour. I've also bought a landing card for thre year which cost £360. This allows as many landings touch and goes at Barton as you want.
It's taken me about 10 months to do a hundred hours so the total cost has been-
10 times £45=£450
Landing card=£360
100 times(max)£55 per hour=5500
Total=£6310, or, £63.10 per hour wet.
Unless I'm mistaken this is the cheapest way of hour building and there must be similar groups in Sussex. Also the availability is excellent, I can pretty much fly when I want and it's a really well run group with very friendly members.
Jon