Final provisions Section 22: Commencement, transitional and savings
Subsection (1) sets out the sections which come into force on Royal Assent. They are sections 1 and 2 on the sunset of retained EU law; sections 5(1), (2) and (4) to (7) on assimilated law; section 7 on compatibility; sections 9 to 17 and Schedule 3 on the modification of retained EU law and the powers relating to retained EU law or assimilated law; and the final provisions in sections 19 to 23 and Schedules 4 and 5 (which include provision relating to the making of regulations under the Act).
	Subsection (2) sets out that section 18 on the Business Impact Target comes into force two months after Royal Assent of the Act. In respect of all other provisions, subsection (3) allows a Minister of the Crown to make regulations setting the days such provisions come into force.
	Subsection (4) allows a Minister of the Crown to make transitional, transitory or saving provisions as the Minister considers appropriate in connection with-
any provision in this Act coming into force,
the revocation of anything by section 1 (i.e. the revocation of the legislation listed in Schedule 1), or
anything ceasing to be recognised or available in domestic law (and, accordingly, ceasing to be enforced, allowed, or followed) as a result of section 2.
	Subsection (5) and (6) are saving provisions that provide that section 2 to 4 (assimilation of retained EU law) and the changes made by Schedule 2 ("Assimilated law": consequential amendments) do not apply in relation to anything occurring before the end of 2023. The principle of supremacy, retained general principles and the references to "retained EU law" etc. will continue to apply to things occurring before that date, and to any legal proceedings relating to them after that date.