L. The use of land by or on behalf of an air traffic services licence holder to provide services and facilities in connection with the provision of air traffic services and the erection or placing of moveable structures on the land for the purposes of that use.
L.1 Development is permitted by Class L subject to the condition that, on or before the expiry of the period of 6 months beginning with the date on which the use began, the use ceases, and any structure is removed, and the land is restored to its condition before the development took place, or to any other condition as may be agreed in writing between the local planning authority and the developer.