Got these made up at numberplate clinic (Bolton) not quite legal (mot next week!?!) but i wanted full size lettering. There is room for 2 lines of the smaller legal import text if that is preferable, but anything other than a solitary no1 would not fit full size. The largest square front plate available seems to be 13 x7 which is why it has a black surround which is attached on top but extends beyond the base plate.