s 23A Joint unitary development plans: Wales.
(1) A joint unitary development plan or joint proposals for the alteration or replacement of such a plan may be prepared by two or more local planning authorities in Wales for their areas if— (a) each of those areas adjoins each of the others; or (b) the Secretary of State has given his approval. (2) Subsection (1) does not apply in relation to a joint plan for any area which consists of or includes a National Park. (3) The previous provisions of this Chapter shall, in relation to any joint plan or proposals of a kind mentioned in subsection (1), have effect subject to the following provisions of this section. (4) Each of the local planning authorities by whom a joint unitary development plan is prepared shall have the duty imposed under section 13(2) of making copies of the plan available for inspection. (5) Objections to such a plan may be made to any of those authorities and the statement required by section 13(3) to accompany copies of the plan shall state that objections may be so made. (6) It shall be for each of the local planning authorities by whom a joint unitary development plan is prepared to adopt the plan under section 15(1) and, subject to the provisions of this Chapter, they may do so as respects the part of their area to which the plan relates, but any modifications subject to which the plan is adopted must have the agreement of all those authorities. (7) Where a unitary development plan has been prepared jointly, the power of preparing proposals in respect of the plan under section 21 may be exercised as respects their respective areas by any of the authorities by whom it was prepared and the Secretary of State may under that section direct any of them to prepare proposals as respects their respective areas. (8) The date of the coming into operation of a unitary development plan prepared jointly by two or more local planning authorities or for the alteration or replacement of such a plan in pursuance of proposals so prepared shall be a date jointly agreed by those authorities.