The OP is talking about a bit of dual time with an instructor, not training per se. Any tourist can pop down to the local flying club for a "trial lesson" without a medical/slightest interest in a licence, so why can't someone with aspirations on a PPL etc do the same?
Fly, enjoy, get the hours logged and stamped. Whether the CAA accept them or not is neither here nor there given my original comment about most PPL's (self included) needed well above the minimum hours to qualify.
FFS there are enough obstacles in our way without us imagining any more for ourselves!