Sch 1A para 8
(1) The Lord Chancellor may by order made by statutory instrument amend paragraphs 4 and 7 so as to— (a) substitute for references to the consumer prices index (as defined) references to another index, and (b) make amendments in those paragraphs consequential on that substitution. (2) A statutory instrument containing an order under sub-paragraph (1) may not be made unless a draft of the instrument has been laid before and approved by a resolution of each House of Parliament.