Thanks for your replies! So in a nutshell, if I have an EASA ME CPL IR FI, with a SOLI that is not the UK, the only way to teach IR(R) in the UK is to transfer my SOLI to UK CAA. Then do I need to go through IR(R) course to put it on my licence?
Is there a document that details all these regulations? Could not find the answer in ANO.