18.—(1) Each of numbered works 1, 3 and 5 must not commence until, after consultation with the relevant planning authority, a written scheme for the management and mitigation of artificial light emissions for that numbered work which is in accordance with the outline lighting strategy has been submitted to and approved by the relevant planning authority.
(2) The approved scheme for the management and mitigation of artificial light emissions must be implemented before and maintained during the operation of the relevant numbered work.