4(1)A unitary development plan shall include any local plan which is in force in respect of the area in question at the time when the unitary development plan is prepared but subject to such alterations, if any, as may be specified in Part II of the unitary development plan.
(2)A unitary development plan shall as respects any such local plan indicate the extent, if any, to which it is subject to alteration in accordance with Part II of the unitary development plan.
(3)This paragraph shall not be construed as enabling any objections to be made to any part of a unitary development plan which consists of provisions of a local plan that are not subject to alterations as mentioned in sub-paragraph (1).