181(1)
The Treasury may by order made by statutory instrument amend, or further amend, any of the following provisions of this Act so as to reduce or increase a sum mentioned in that provision, namely, sections ... 17(1), . . . ... 70(6), 75(3)(b), 77(1), 78(1), 79(1), 84(1), 101(7)(a), 107(1), 108(1), 109(1), 110(1), ... . . . 140B(6), 155(1) and 158(1).
181(2)
An order under subsection (1) amending section ... 17(1), . . . ... 75(3)(b) . . . or 140B(6) shall be of no effect unless a draft of the order has been laid before and approved by each House of Parliament.