6.—(1) The Secretary of State for Defence may, in the interests of national security, by a certificate in writing exempt—
(a)any of the home forces, any visiting force or any headquarters from any requirement imposed by regulation 4 of these Regulations; or
(b)any member of the home forces, any member of a visiting force or any member of a headquarters from the requirement imposed by regulation 5 of these Regulations;
and any exemption such as is specified in sub-paragraph (a) or (b) of this paragraph may be granted subject to conditions and to a limit of time and may be revoked by the said Secretary of State by a further certificate in writing at any time.
(2) In this regulation—
(a)“the home forces” has the same meaning as in section 12(1) of the Visiting Forces Act 1952(1);
(b)“headquarters” has the same meaning as in article 3(2) of the Visiting Forces and International Headquarters (Application of Law) Order 1965(2);
(c)“member of a headquarters” has the same meaning as in paragraph 1(1) of the Schedule to the International Headquarters and Defence Organisations Act 1964(3); and
(d)“visiting force” has the same meaning as it does for the purposes of any provision of Part I of the Visiting Forces Act 1952.