15(1)Subject to sub-paragraph (2) of this paragraph, every planning permission granted or deemed to have been granted before 8th December 1969 shall, if the development to which it relates had not been begun before the beginning of 1969, be deemed to have been granted subject to a condition that the development must be begun not later than the expiration of five years beginning with 8th December 1969.
(2)Sub-paragraph (1) of this paragraph does not apply—
(a)to any planning permission which was granted or deemed to be granted before 8th December 1969 subject to an express condition that the development to which it relates should be begun, or be completed, not later than a specified date or within a specified period ; or
(b)to any such planning permission as is mentioned in section 38(3) of this Act.