50.—(1) Subject to the following provisions of this regulation, regulations 45 and 46 (requirement to review certain decisions and consents, etc.) apply to any planning permission or deemed planning permission unless—
(a)the development to which it related has been completed; or
(b)it was granted subject to a condition as to the time within which the development to which it related was to be begun and that time has expired without the development having been begun; or
(c)it was granted for a limited period and that period has expired.
(2) Regulations 45 and 46 do not apply to any planning permission granted or deemed to have been granted—
(a)by a development order (but see regulations 55 to 57);
(b)by virtue of the adoption of a simplified planning zone scheme or of alterations to such a scheme (but see regulation 58);
(c)by virtue of the taking effect of an order designating an enterprise zone or the adoption of a modified enterprise zone scheme (but see regulation 59).
(3) Where planning permission falls to be reviewed under regulations 45 and 46—
(a)it shall be reviewed by the Department; and
(b)the powers conferred by Article 38 of the 1991 Order (revocation or modification of planning permission) shall be exercisable for the purpose of reviewing, or giving effect to a review of any planning permission which falls to be reviewed.