I live in Luxembourg where the newest plates are two letters then four numbers. A Scottish friend of mine had HA6615.

Best license plate I ever saw was "4MYX2C"

The best tag I have ever seen I IN2B8 (I intubate)

I wish I could add one of my own, there was a license plate outside my school that read HOOOOOOOOP

On a green Camero: WTH ENVY

You can't make up a plate in UK but you can choose an existing plate that looks like something you want. I wanted MEM 844B which would look like memsaab from a distance but it doesn't exist. (Mr Auntriarch and I both had Saabs at one point, and we used to refer to his as the Saab and mine as the MemSaab)

fun Virginia fact: our vanity plates are $10/yr. that's why our state has so many

I saw one in a parking lot in Indiana. Plate was LKAGLV. Just to the left was the model of the Honda, a Fit. Fit like a glove.

I've seen two great plates here. Sadly I don't have pics but one is a Nissan Juke and the tag says Boxhero. And the other is a Lamborghini that has a tag that says Slowrde

*hangs a license plate onto Audi's tail that reads PWNSR*