FFF
This was done to death here in a recent thread...
Surely, if you are
a) instrument qualified, and
b) instrument current, and
c) have a suitable aircraft, and
d) carry the UK approach plates
then it would be natural to plan EVERY flight with the IFR option, as in the UK (can go IFR anytime in Class G without a clearance, etc) it takes zero extra effort.
One has to navigate accurately anyway, to avoid CAS busts.
Otherwise, one cannot fly if there is any prospect of IMC, and that means flying becomes limited to a local burger run on a CAVOK day