s 14 Signs on vehicles other than taxis.
(1) Subject to subsection (2) below, there shall not be displayed on or in a private hire car any word, sign, notice, mark, illumination or other feature which may suggest that the vehicle is available for hire as a taxi. (2) Subsection (1) above does not apply in relation to any licence plate or other thing issued by the licensing authority for the purpose of indicating that the vehicle to which it relates is a private hire car or in relation to any sign required by virtue of section 21 of the Vehicles (Excise) Act 1971. (3) Any person who— (a) drives a vehicle in respect of which subsection (1) is contravened; or (b) causes or knowingly permits that subsection to be contravened in respect of any vehicle, shall be guilty of an offence and liable, on summary conviction, to a fine not exceeding level 3 on the standard scale .