Scope and nature of powers: general
(1) Any power to make regulations under this Act -
(a) so far as exercisable by a Minister of the Crown or by a Minister of the Crown acting jointly with a devolved authority, is exercisable by statutory instrument,
(b) so far as exercisable by the Welsh Ministers or by the Welsh Ministers acting jointly with a Minister of the Crown, is exercisable by statutory instrument, and
(c) so far as exercisable by a Northern Ireland department (other than when acting jointly with a Minister of the Crown), is exercisable by statutory rule for the purposes of the Statutory Rules (Northern Ireland) Order 1979 (SI 1979/1573 (NI 12)) (and not by statutory instrument).
(2) For regulations made under this Act by the Scottish Ministers, see also section 27 of the Interpretation and Legislative Reform (Scotland) Act 2010 (asp 10) (Scottish statutory instruments).
21 Any power to make regulations under this Act -
(a) may be exercised so as to -
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