I don't do german plates so nothing to worry about there
I know what you mean about insurance, I read an exclusion in my contract that says I'm not insured to drive on the 'ring!
When you say road legal does that mean taxed and MOT'd?
I don't think I'm explaining myself well.
For example, if you SORNed an old Golf with no tax or MOT then stripped it out etc etc and trailered it there and back, even though, in theory it would pass an MOT and could be allowed to drive on the roads, would that be acceptable?