Her Majesty may at any time, in any case where it appears to Her appropriate in consequence of the provisions of this Act, by Order in Council coming into force not earlier than 1st April 1974 make modifications of any enactments contained in any other public general Act passed before that date or any instrument made before that date under any such Act, being an instrument of a legislative character and not being an instrument in the nature of a local enactment, as may appear to Her to be necessary to make that enactment or instrument apply in relation to any particular class of new authority as it applies in relation to any particular class of local authority existing immediately before that date.

The modifications which may be made by an Order in Council under this section shall be in addition to those made by any other provision of this Act, but shall have effect subject to any such other modification, except those made by section 179 above.

No Order in Council shall be made under this section unless a draft of the Order has been laid before, and approved by a resolution of, each House of Parliament.