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42.—(1) Where pursuant to the Railways and Other Transport Systems (Approval of Works, Plant and Equipment) Regulations 1994(1) approval has been obtained from the Health and Safety Executive with respect to any works, plant or equipment (including vehicles) forming part of the railways authorised by this Order, such works, plant and equipment shall not be used in a state or condition other than that in which they were at the time that the approval was given unless any change thereto does not materially impair the safe operation of the railways so authorised.
(2) If without reasonable cause the provisions of paragraph (1) above are contravened, the undertaker shall be guilty of an offence and liable on summary conviction to a fine not exceeding level 3 on the standard scale.
(3) No proceedings shall be instituted in England and Wales in respect of an offence under this article except by or with the consent of the Health and Safety Executive or the Director of Public Prosecutions.