any legal requirementmeans any requirement of—
headquartershas the same meaning as in article 3(2) of the Visiting Forces and International Headquarters (Application of Law) Order 1965;
member of a headquartershas the same meaning as in paragraph 1(1) of the Schedule to the International Headquarters and Defence Organisations Act 1964;
relevant self-employed personmeans a self-employed person (except a worker) who conducts an undertaking of a prescribed description for the purposes of section 3(2) of the 1974 Act;
the 1974 Actmeans the Health and Safety at Work etc.
the home forceshas the same meaning as in section 12(1) of the Visiting Forces Act 1952;
visiting forcehas the same meaning as it does for the purposes of any provision of Part I of the Visiting Forces Act 1952.
workincludes work as a worker;
workermeans an individual who has entered into or works under— (a) a contract of employment;