Number plate

The Doctor's TARDIS was capable of tracking number plates. (TV: Resolution)

The number plates of several cars were visible in the Gatwick car park, including 937 DFS, 768 WEF, 378 YXS, a grey car with the 378 YMS number plate, a green car with the 378 YMS number plate, 378 LAF. (TV: The Faceless Ones)