A. The erection or construction and the maintenance, improvement or other alteration by a local authority or by an urban development corporation of—
(a)any small ancillary building, works or equipment on land belonging to or maintained by them required for the purposes of any function exercised by them on that land otherwise than as statutory undertakers;
(b)lamp standards, information kiosks, passenger shelters, public shelters and seats, telephone boxes, fire alarms, public drinking fountains, horse-troughs, refuse bins or baskets, barriers for the control of people waiting to enter public service vehicles, and similar structures or works required in connection with the operation of any public service administered by them.
A.1 The reference in Class A to any small building, works or equipment is a reference to building, works or equipment not exceeding 4 metres in height or 200 cubic metres in capacity.
B. The deposit by a local authority of waste material on any land comprised in a site which was used for that purpose on 1st July 1948 whether or not the superficial area or the height of the deposit is extended as a result.
B.1 Development is not permitted by Class B if the waste material is or includes material resulting from the winning and working of minerals.