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

(a) 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

(b) the Registrar determines to withhold that specific registration number from sale; or

(c) the specific registration number –

(i) in the opinion of the Registrar, may be mistaken for another registration number; or

(ii) in the opinion of the Registrar, is offensive or is otherwise inappropriate for display; or

(iii) is prohibited under any Act.