My front number plate was cracked, not enough to fail the MOT test but enough to be annoying.
I ordered a new set from 'Platesforcars' and they are superb. There are lots of options but all I went for was the red line around the registration and the 3D effect. I was thinking of having a Bond quote along the bottom but decided it was a bit pretentious!
I do like the new plates, and there are no cracks :-)