(1)A person commits an offence who, without lawful authority—
(a)immobilises a motor vehicle by the attachment to the vehicle, or a part of it, of an immobilising device, or
(b)moves, or restricts the movement of, such a vehicle by any means,
intending to prevent or inhibit the removal of the vehicle by a person otherwise entitled to remove it.
(2)The express or implied consent (whether or not legally binding) of a person otherwise entitled to remove the vehicle to the immobilisation, movement or restriction concerned is not lawful authority for the purposes of subsection (1).
(3)But, where the restriction of the movement of the vehicle is by means of a fixed barrier and the barrier was present (whether or not lowered into place or otherwise restricting movement) when the vehicle was parked, any express or implied consent (whether or not legally binding) of the driver of the vehicle to the restriction is, for the purposes of subsection (1), lawful authority for the restriction.
(4)A person who is entitled to remove a vehicle cannot commit an offence under this section in relation to that vehicle.
(5)A person guilty of an offence under this section is liable—
(a)on conviction on indictment, to a fine,
(b)on summary conviction, to a fine not exceeding the statutory maximum.
(6)In this section “motor vehicle” means a mechanically propelled vehicle or a vehicle designed or adapted for towing by a mechanically propelled vehicle.