I was told, by law the maker of the plate has to put there name on the plate, if you dont want there name, you have to sign a disclaimer that there not intended to be used on the road.
When you follow cars you will notice most will have a name on them, any suspect plates wont have a name.
If the dealers still going they may be able to make plates for you
QUOTE
"No Name, Postcode and British Standard Mark
Every number plate that has been made to DVLA standards has information on the bottom. These are the name, trade mark or other means of identification of the manufacturer or component supplier and the name and postcode of the supplying outlet (e.g. National Numbers Ltd TS23 1LG), and the British Standard Mark (“BS AU 145d”).
If the number plate is missing this information the chances are it has not been made by an approved number plate supplier. This is dangerous as they cannot be held accountable for displaying illegal number plates."