One obviously would not (hopefully!) be able to find an expert witness who would say that - and we are agreed that if it continues to be protected by a fuse ≤13A (whether in plug, FCU or wherever), the manufacturer would have no case. However, I thought your point was that the manufacturer would not want to stand up in court and 'admit' that their product would be "intrinsically unsafe" in the absence of such an external fuse?I think I'd want them to field an expert witness to show how removing the plug and correctly terminating the flex into an FCU, or a flex outlet plate supplied by an FCU, either damaged their product or made it liable to damage which would not have occurred had the plug been left on.
Kind Regards, John