I certainly don't log IFR time and there is no legal requirement to do so. CAP 804 outlines the logging requirement clearly, and the nearest we get is an ANO requirement to record "Information about any special conditions under which the flight was conducted, including night flying and instrument flying". Nothing there about flight rules.
It is particularly perverse to then require evidence of IFR time as a prerequisite to further qualification.
The regulation is daft, as IFR can be flown (in the UK at least) in uncontrolled airspace without a single glance at an instrument. I quite often fly IFR especially when "cloud hooning" above 3,000 ft, which would be illegal VFR.
In my opinion, the regulations should be changed to either require the logging of flight rules, or use actual instrument flight time (at a 1 to 4 ratio, like the old days) instead of IFR time as the prerequisite.