Development is permitted by Class F subject to the following conditions—
(a)in the case of any Class F(a) development, not less than eight weeks before the beginning of operations to lay a notifiable pipe-line, the public gas supplier shall give notice in writing to the local planning authority of its intention to carry out that development, identifying the land under which the pipe-line is to be laid,
(b)in the case of any Class F(d) development, on completion of the laying or construction of the main or pipe, or at the expiry of a period of nine months from the beginning of the development, whichever is the sooner, any pipes or other apparatus still stored on the land shall be removed and the land restored as soon as reasonably practicable to its condition before the development took place (or to any other condition which may be agreed with the local planning authority),
(c)in the case of any Class F(e) development, approval of the details of the design and external appearance of the building shall be obtained, before the development is begun, from—
(i)in Greater London or a metropolitan county, the local planning authority,
(ii)in a National Park, outside a metropolitan county, the county planning authority,
(iii)in any other case, the district planning authority(1).
For cases where functions have been transferred from the county council to the district council or vice versa see regulation 5 of the Local Government Changes for England Regulations 1994 (S.I. 1994/867) and section 1 of the Act.