s 2A Power to amend Schedule 1A
(1) The Secretary of State may by regulations— (a) amend Schedule 1A (whether to add, vary or remove a substance or concentration limit or make any other change), and (b) amend section 2 in consequence of any amendment made under paragraph (a). (2) The power in subsection (1) to add a concentration limit includes power to add a concentration limit in any Part of Schedule 1A (whether for an explosives precursor or a poison). (3) In determining the distribution of substances as between the various Parts of Schedule 1A, regard must be had to the desirability of restricting Parts 3 and 4 to substances that meet each of the following criteria— (a) they are in common use, or are likely to come into common use, for purposes other than the treatment of human ailments, and (b) it is reasonably necessary to include them in one of those Parts if members of the general public are to have adequate facilities for obtaining them.