yup - and if the vis is 1.5k+ with no visual references you are permitted to fly VFR, by sole reference to instruments, so the MinIFR speed limit would not prohibit flight by sole reference to instruments (provided you elect to fly iaw VFR)
Surely VFR below FL100, requires Clear of Cloud and in sight of the surface for helicopters?
NOT 'No visual references'
but if the rules have changed in the UK recently you'll have to excuse me as I no longer fly in this country.