What exactly do you want to do in the way of flying? I know of an Arrow around Thetford area; another (possibly) near Great Yarmouth! A share in a Tiger Moth near Norwich and possibly one in a Chipmunk!! Plus, I believe there is a share in a PA 28 180 at Old Buck. Unless you plan to do quite a lot more than 20 hours in an Arrow you would be better of hiring and letting someone else take the financial risks.