"owner"

in relation to a place or area declared a National Key Point under section 2, includes—

(a) the person registered as the owner of the land constituting such place or area;
(b) the person who by virtue of any right acquired from a person referred to in paragraph (a), lawfully occupies such place or area;
(c) where the person referred to in paragraph (a) or (b) is deceased, a minor, insolvent, insane or otherwise legally incompetent, an executor, administrator, guardian, trustee, liquidator, curator or other person who controls the estate and assets of that person or represents him;
(d) where the State owns or occupies such place or area, the head of the department under the control of which the place or area is;
(e) any person under whose control or management such place or area is;