Before landing check list
I'm saying what I did, no more, no less. Slightly difficult to decode your post, but I'm not saying what the cause was, I do suspect the most likely cause is LOC in IMC, I do not think for one minute this 206 was IFR, I do not think it's just UK that does not permit SE IFR - indeed I am waiting to hear if the US does permit it.
Right?