This whole EASA licensing firago is a bureaucratic nightmare. I'm of the view that CAA implementation of EASA rules is now positively dangerous because of the confusion it is causing.
For what it's worth I'd strongly recommend taking an IMCR course as even if they can't find a way of adding the rating to your licence, if you find yourself with a weather issue you will have the skills to deal with it and can argue the legalities on the ground later. In most cases if you haven't acted recklessly a safety related decision by a PIC trumps any rule and the more skills you have the better.