2. (1) Sections 1, 2 and 3 commence on the day on which this Act is notified in the Gazette.
(2) Section 4 commences—
(a) on the day on which, but immediately after, the provisions of the Remand Centres (Amendment) Act 1995 (other than sections 1 and 2) commence; or
(b) on the day on which this Act is notified in the Gazette ;
whichever is the later.