I never put a GB plate on any of my cars, always had an EU badge next to the numberplate (still have on the Morgan). Nobody ever said anything in 25 years or so.

I'm not sure when I'll go back, but when I do I'll just keep the EU plate and see how I get on.

Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE