SCHEDULE 4Exemptions
3.
(1)
A person who is a Crown servant, a government contractor, or a member of a visiting force, who—
(a)
is required to undertake work necessary to the delivery of essential defence activities;
(b)
has travelled from a point of origin within the common travel area or from a category 1 country or territory on a vessel or aircraft operated by, or in support of, Her Majesty's armed forces or by, or in support of, a visiting force and that vessel or aircraft has not taken on any persons, docked in any port or landed in any category 2 country or territory; or
(c)
has undertaken a continuous period of at least 10 days ending with the day immediately preceding the day of their arrival in the United Kingdom aboard a vessel operated by or in support of Her Majesty's Naval Service or by, or in support of, a visiting force, where they have not disembarked and that vessel has not taken on any persons or docked in any port outside of the common travel area for a period of at least 10 days ending with the day of its arrival in the United Kingdom.
(2)
For the purposes of sub-paragraph (1)—
(a)
“defence” has the meaning given in section 2(4) of the Official Secrets Act 1989;
(b)
“visiting force” means any body, contingent or detachment of the forces of a country, being a body, contingent or detachment for the time being present in the United Kingdom (including United Kingdom territorial waters), on the invitation of Her Majesty's Government in the United Kingdom.