Pete, don't tell him that !
There are legal plate and letter sizes you have to abide by, you can't just make it as small as you like you numpty :der: .
Click Here
Read the regulation at the bottom of the page
" Size and spacing of characters: special cases" (regulation 14A) all the info is there. Just bear in mind that this regulation was written in 2002, so
if your plate was made before that ;-) then you could even leave out the bit about the "the name and postcode of the person by whom the plate was supplied"
Steve