i've had pressed plates on my last 3 cars
german white front and rear on my G40 only got stopped once, i was driving like a c**k though.
black and silver on a volvo 340,
and french on the clio.
so in about 5 years of driving with them i've been stopped once, it was a £30 fine, no points. I think thats not bad, so still use them they look better than standard. If i was getting fined every month then maybe i'd take them off but for now i'll just pay up.
just do it