22.— (1) The Executive shall, as soon as is practicable after making a relevant decision (but, in any case, not later than 14 days after making the relevant decision), give notice in writing of the relevant decision, together with its reasons for the relevant decision, to the supplier of the listed item the subject of the relevant decision.

(2) The Executive may, in a relevant decision, specify a date, or the occurrence of an event, from which the relevant decision shall take effect.

(3) Part 3 of Schedule 1 shall have effect where the Executive proposes to make a relevant decision.

(4) In this section and Part 3 of Schedule 1 “relevant decision” means a decision of the Executive under section 21 to alter the relevant price of a listed item.