Incidentally, I just looked around and found a few mentions but nothing 100% definite... but it has been said that most UK TV shows of this period (and for that matter a lot of them since then) were shot in PAL anyway. Be interesting to get definite confirmation on that. It would mean Chipmunk Pat is the correct version. Also apparently a number of Euro film-makers still favour PAL/25fps, go figure, and obviously stuff shot on DV (i.e. 28 Days Later, presumably) would be 25fps originally.

Oh, what a tangled web!