Double take number plate

Walking along the road near my hotel this morning, the number plate of a car parked by the side of the road (illegally I assume because it had a parking ticket) caught my eye:

For a second or two I thought: “How can this car have two numbers – 81 AND 13?” Then of course I realised that I was in France, and the word ‘and’ doesn’t mean anything.

But I wondered how the parking inspectors in the UK would handle writing the ticket if the driver took it over the Channel and parked it illegally.

Shut up, s’il vous plait

French checkout etiquette