Not if you are referring to UK road-legal number plates ....
Current legislation states:
Flags and national identifying letters
You can display one of the following flags with identifying letters on the left-hand side of the number plate:
The letters, or national identifiers, you can have are:
- Union Flag
- Cross of St George
- Cross of St Andrew - also known as the Saltire
- Red Dragon of Wales
You’ll still need a GB sticker when travelling in Europe if you display one of these national flags and identifiers.
- GREAT BRITAIN, Great Britain or GB
- UNITED KINGDOM, United Kingdom or UK
- CYMRU, Cymru, CYM or Cym
- ENGLAND, England, ENG, Eng
- SCOTLAND, Scotland, SCO or Sco
- WALES or Wales
The flag must be above the identifier. You can’t have the flag or letters on the number plate margin, and neither can be more than 50 millimetres wide.
If you display the Euro symbol and Great Britain (GB) national identifier on your number plate, then you won’t need a separate GB sticker when travelling within the European Union.
The Euro symbol must:
- Be a minimum height of 98mm
- Have a width between 40 and 50mm
- Have a reflective blue background with 12 reflecting yellow stars at the top
- Show the member state (GB) in reflecting white or yellow