EAWR 15, admittedly it would only apply for the contractors and not the homeowner but still.There always should have been a regulation on access space and similar for the CU placement (or fuse board in its day). But there was not and I don't see it ever being introduced for existing properties under EICR sort of checks. Really it should be a buildings control issue.
I really don't see how RFC vs. radial matters there as such problems are already in place.
AFDD cost, now there is something to consider...