12The provisions of Part IV of this Act shall apply to a review under paragraph 10 above as they apply to a review under section 57 above, but in its application to a review under that paragraph section 58 above shall have effect as if it required—
(a)the Welsh Commission to submit a report for any district before such date as the Secretary of State may direct, and
(b)the Secretary of State to make an order thereunder giving effect to the proposals of the Commission under paragraph 10 above (whether as submitted to him or with modifications).