The best thing to do to figure out what you can count is to have a read of
LASORS. Section 1C contains the details of the exact requirements for a PPL.
However, more important than the rules about what you can and can not count, is whether it is practically feasible to complete the PPL. The minimum time, as I'm sure you know, is 45 hours. But almost everyone needs at least a little more than that - some need substantially more. If the average for people who have no previous flying experience is, for example, 55 hours (which I would guess is a reasonable average, but I don't have any figures to back that up), then your experience from 6 or more years ago may reduce the time it will take you to, maybe, 45-50 hours. Which is still more than the minimum, and so might well make the rules and regulations rather academic.
Have you considered getting an NPPL? The hours requirements are less - but without knowing what you're trying to achieve, I don't know if it would meet your needs.
FFF
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