The most well known website for buying aeroplanes, or shares, in the UK is AFORS:
Planes and Aircraft For Sale - Light Aircraft, Autogyros, Helicopters ... (UK), and generally speaking adverts are perfectly honest about the money, if perhaps not always quite so honest about how good the aeroplane is or what the syndicate are like to cco-exist with in ownership.
I doubt that many syndicates will be sympathetic to somebody, particularly overseas and inexperienced, wanted to buy a share purely to hourbuild as you're not exactly going to put much back into the syndicate with that profile and are a bit of an accident risk as well.
On the other hand, there are some very cheap LAA aeroplanes which will also have very low runing costs. Even on your own an aeroplane like that offers very cheap hourbuilding, and with a couple of friends in a similar position, still better. Buy it, base it somewhere cheap an friendly, learn about aircraft ownership whilst you build hours, do a good service, sell it probably at a moderate loss to ensure it goes quickly and you don't end up with never ending bills.
G