If you haven't got too far into your PPL you maybe insterested in a course at the University of Leeds, Aviation Technology. The university will pay for about one third of your PPL and you do it whilst at uni. You also study some ATPL style subjects. If you want more info PM me or look at
www.leeds.ac.uk.
You do need a CPL to get an FI but it's well worth thinking about. Money dependent as it may be have you looked at an APP with OAT or FTE?
Also, not for everyone i realise, but have you considered the best flying school in the world? The RAF? Get Liz to pay for it all!