29.—(1) Subject to paragraph (2), no pyrotechnic substance which consists of—
(a)sulphur; or
(b)phosphorus,
mixed with chlorate of potassium or other chlorates or pyrotechnic article which contains any such mixture may be manufactured, stored or imported into the United Kingdom without the approval of the Executive.
(2) In determining whether to approve for the purposes of paragraph (1), the Executive must take into account—
(a)the risk of the mixture spontaneously combusting; and
(b)the potential for the mixture to become sensitive to ignition by friction or impact.
(3) A contravention of paragraph (1) concerning importation is punishable only under the 1974 Act.