With both my Golf and Passat, they both came with the dealers plates that had an extra black section on the bottom of the plate with the dealers details on.
I had my own plates made up for my private reg numbers with nothing else on them other than the BS number in the bottom, right corner.
I know exactly what you mean about Car Giant etc plates. It's like the Arnold Clark stickers. Jeez, how big and bright do they need to be?