I have read it 
I have road legal plates, whether or not the dealers sales technique was an entirely legal process in another question.
Afterall, it was Edition 38, in a field with no computers. They wrote down all the reg's they pressed, but nothing else.
Thats fine, as long as your happy, the police if they were to check might not be. 
You've lost me now

So even though I have legal plates I can get in trouble, even though the plates adhere to all requirements?
Surely if my plate gets read by the police camera thing, there wont (hopefully) be anything to trigger an alert, and if an alert was triggered in won't be to do with plates.
Or is it something like typing in the BA number?
