Sole ownership is a very expensive way to go, and I suggest would only make sense if you are going to fly a great deal, maybe 100 hr/year or more.
Have you considered joining a syndicate? It reduces costs per person and, if the group is not too large, the scheduling clashes are minimal. Lots of ads in the back of various light aviation magazines.
Beware of going the Limited Company route: the UK taxman will hit you for tax on "received benefits" or some such. I'm not an expert on this, you would need an accountant's advice.