Sure does

It's not actually the size of the plate though, it's the size of the lettering. I had truck style plates on mine - square, with legal lettering - they looked better but huge

I got some jap-sized plates made up, with the lettering in the correct font, as big as would fit, but they're still smaller than standard. I haven't been pulled for it yet, or even had anyone mention it (I have friends with family in the force).
I've heard bad things about demontweaks so I would avoid them. I got my plates made up at Japshow earlier this year - £20 for both

The only questions the guy asked where "whats your reg?" and "do you want a border on it?"
