Yes

But IF I actually ever used the car then I wouldn't do - The point is, if you live in a city and use your car every day, don't run them because it will just give the c*nt traffic cops something to do

I carry my ordinary plates in my boot with screws (as my black ones are just stuck on ) and I play the "Oh...shit i've just come from a meet/show and totally forgot to change them back..." card.