Roy
the font is Charles Wright Font different versions of the same floating about, got mind from Signwizard. Then make a page in Corel 110mm x 520mm with a margin of 7mm. Type your Reg & remember to center to page each time (P). I have files saved for each trade company & myself with all the relevant BS numbers & company details i then just add the reg numbers. If you are going to print them, then make a Print Style Default of the page size & mirror image automatically, then just select it each time you want to print a plate.
Someone may have a better way if not i hope this helps
Kev