(1)In each of the following provisions of the Criminal Justice Act 1988 (c. 33), for “two” substitute “four”—
(a)section 139(6)(b) (maximum penalty for offence of having knife etc. in public place);
(b)section 139A(5)(a)(ii) (maximum penalty for offence of having knife etc. or offensive weapon on school premises).
(2)This section applies only to offences committed after the commencement of this section.