2. The following explosives, even though meeting the description of explosives in paragraph 1 of this Part, shall not be considered to be explosives for the purposes of these Regulations as long as their manufacture or possession continues to be to a quantity and for a purpose specified in any of sub-paragraphs (a) to (c) of this paragraph or they continue to satisfy the description specified in sub-paragraph (d) of this paragraph, namely any explosive—
(a)the manufacture or possession of which is to a quantity no greater than is necessary for the purpose of, and is solely for use in, lawful research, development or testing of new or modified explosives;
(b)the manufacture or possession of which is to a quantity no greater than is necessary for the purpose of, and is solely for use in, lawful training in explosives detection or development or testing of explosives detection equipment;
(c)the manufacture or possession of which is to a quantity no greater than is necessary for, and is solely for, the purpose of lawful forensic science; or
(d)which is manufactured in the United Kingdom, and destined to be incorporated as an integral part of an authorised military device in the United Kingdom, before the date which is 3 years after the coming into force of these Regulations.