I've just been contemplating a tap-replacement project, and considered (ok, I've just bought) flexible tap pipes - the type with braided hose and a compression fitting at one end. The obvious problem is how to use the compression fitting on the existing plastic piping?, a quick google suggests that you need an insert for the pipe (I can imagine a copper sleeve with a slight rim, that is inserted into the end of the cut plastic pipe - to avoid undue distortion to the plastic pipe when the olive bites).
Is this the right track (in which case, I really, really should have included these in the old screwfix order) - can these be *readily* picked up (i.e. in the Sunday sheds, rather than plumbers merchants (who all seem to close at the convenient times for most people in full-time employment)
Regards
Mike