Ah, bpilatus, emergency authority of pilot in command, you can do almost what you want then, but I think you have to tell the authorities about it and they may come asking annoying questions
It sure is a tortuous route to the conclusions, and I don't know a vast amount about the UK system, but nobody has yet said where it goes wrong. All the people who come up with folklore about what you can do with the IMCR have gone quite

This subject will come up again so I'll bring it up then.
So having thought about it even more, I now think the CAA rules are basically the same as the FAA rules for flight in class G, and that's no instrument descent below MEA/MSA in class G unless you are on an approved letdown. On published instrument approaches, the IMCR minima are higher by the amounst prescribed in the AIP, and these are legally binding minima. Unless somebody can demonstrate otherwise using an argument with cites regulations