You receive a letter from CRT telling you - you are not complying with the terms of your licence. If your response is to seek legal advice then can I ask what are you doing on the water?
“I have had one of those psychologically bullying letters from CRT and want to engage a solicitor to fight them. Has anyone else found a solicitor who is good in this area?”
I wonder if CRT responded to you “Oh bloody hell another whiny complaint from one of those miserable boaters,” I feel quite sure you would get upset.