The Town and Country Planning (General Permitted Development) (England) Order 2015 No. 596

SCHEDULE 2 Permitted development rights

PART 7 Non-domestic extensions, alterations etc

Class K – waste deposits from an industrial process

Development not permitted

K.1  Development is not permitted by Class K if—

(a) the waste material is or includes material resulting from the winning and working of minerals; or

(b) the use on 1st July 1948 was for the deposit of material resulting from the winning and working of minerals.