Another possibility would be to find a non-equity group, although these only become attractive (compared to flying school prices) if you are flying more than an hour a month and don't want to be tied into an aircraft share.
There are three of these at my airfield (Wellesbourne) and a PA28-160 would cost you £45 a month and £90 an hour with one, £60/70 with another and £40/120 with the third - although the last one has a choice of aircraft at various prices.
If you give us an idea of your location I'm sure there would be more suggestions. Good luck with the hunt
