Vehicle and Traffic (Driver Licensing and Vehicle Registration) Regulations 2021

The Registrar may refuse to assign the rights to a specific registration number if –

in the opinion of the Registrar, the registration number is identical, or appears to be identical, to a number that has already been issued as a number plate or a personalised number plate; or the Registrar determines to withhold that specific registration number from sale; or the specific registration number – in the opinion of the Registrar, may be mistaken for another registration number; or in the opinion of the Registrar, is offensive or is otherwise inappropriate for display; or is prohibited under any Act.