166Orders and regulations (general provisions)
(1)Powers under this Act to make regulations or orders are exercisable by statutory instrument.
(2)Except in so far as this Act otherwise provides, any power conferred thereby to make an Order in Council, regulations or an order may be exercised—
(a)either in relation to all cases to which the power extends, or in relation to those cases subject to specified exceptions, or in relation to any specified cases or classes of case;
(b)so as to make, as respects the cases in relation to which it is exercised—
(i)the full provision to which the power extends or any less provision (whether by way of exception or otherwise),
(ii)the same provision for all cases in relation to which the power is exercised, or different provision for different cases or different classes of case or different provision as respects the same case or class of case for different purposes of this Act,
(iii)any such provision either unconditionally or subject to any specified condition ;
and where such a power is expressed to be exercisable for alternative purposes it may be exercised in relation to the same case for any or all of those purposes; and powers to make Orders in Council, regulations or an order for the purposes of any one provision of this Act are without prejudice to powers to make regulations or an order for the purposes of any other provision.
(3)Without prejudice to any specific provision in this Act, a power conferred by this Act to make an Order in Council, regulations or an order includes power to make thereby such incidental or supplementary provision as appears to Her Majesty, or the authority making the regulations or order, as the case may be, to be expedient for the purposes of the Order in Council, regulations or order.
(4)A power conferred by this Act to make an Order in Council or an order, except an order under Schedule 19, paragraph 1 (approval of supplementary scheme), includes power to vary or revoke any such Order in Council or order by a subsequent Order in Council or, as the case may be, order.
(5)A power conferred on the Secretary of State by any provision of this Act, other than section 86(1) to (4), or by section 123(2) or (3) of the [1975 c. 15.] Social Security (Northern Ireland) Act 1975 (Her Majesty's forces), to make any regulations or order, where the power is not expressed to be exercisable with the consent of the Treasury, shall if the Treasury so direct be exercisable only in conjunction with them.
(6)Powers conferred by sections 128, 129, 131 and 132 to modify Parts I to III of this Act extend also to modifying so much of any other provision of this Act as replaces provisions of the National Insurance (Industrial Injuries) Acts 1965 to 1974.
(7)A power under any of sections 128 to 132, 142 or 143 of this Act to prescribe, or to make provision by Order in Council for, modifications or adaptations of this Act shall be exercisable in relation to any enactment passed after this Act which is directed to be construed as one with this Act; but this subsection applies only so far as a contrary intention is not expressed in the enactment so passed, and is without prejudice to the generality of any such direction.