Speedbird,
There are a few flying clubs at Blackpool, best thing to do is pop into each of them and see if there are any shares going. I don't know of any right now - if you'd asked me a month or two ago I knew of a new C152 group which was forming, but that group is full now.
You could also try Barton. I don't know Barton, but I get the impression it's more of a club environment than Blackpool, so you're more likely to find shares there - especially shares in interesting (and therefore often cheap) aircraft.
FFF
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