WU on a licence plate

WU is an area code in 4 countries. The plate's style and country code tell them apart.

Austria
WU 123AB
Bruck an der Leitha (Lower Austria), Korneuburg (Lower Austria), St. Pölten-Land (Lower Austria), Tulln (Lower Austria)
No longer issued
Code details →
Germany
WÜ-AB 1234
Würzburg (Bavaria), Würzburg (Bavaria)
Code details →
Poland
WU 12345
Warszawa (Masovian)
Code details →
United Kingdom
WU51 ABC
Bristol (West of England)
Code details →