Simple symmetrical style, promoting WA.
Could also be used on Elec Vehicle suggesting "0" (zero) emissions.
These are standard size (not slimline). Black letter/number on White background.
Note - the font shown by Mr Plates template makes it appear to have the letter O, but the actual plate font is the number zero 0.
Plates are new and still with DoT (Cannington branch) as they have not been displayed on my vehicle to date.