7.—(1) A penalty charge notice fixed to a vehicle in accordance with regulation 5(a) shall not be removed or interfered with except by or under the authority of—
(a)the owner or person in charge of the vehicle; or
(b)the enforcement authority.
(2) A person contravening paragraph (1) shall be guilty of an offence and liable on summary conviction to a fine not exceeding level 2 on the standard scale.