[B]Stik[B] I remember the Shield Xyla (wood in Greek) being advertised for under £10k a few years ago but now it seems to have crept up to nearly £13k which seems a bit much for a single seater in this category.
Get an Auster J1/N or a Mark 6 with the Gipsy 10.2 engine (with the oil ring mod). Good load hauler (4 seats) out of short strips, reliable engine that drinks 6 ish gph while trundling along at around 100mph and all for under £15k!