Any power to make regulations under section 21A or 21B—
(a) is exercisable by statutory instrument, and
(b) includes power—
(i) to make different provision for different cases, and
(ii) to make incidental, supplementary, transitional or consequential provision.
A statutory instrument containing regulations made under section 21A or 21B by the Secretary of State is subject to annulment in pursuance of a resolution of either House of Parliament.
In sections 21A and 21B, "appropriate national authority" means—
(a) in relation to England, the Secretary of State;
(b) in relation to Wales, the National Assembly for Wales.