An overseas investment in sensitive land is the acquisition by an overseas person, or an associate of an overseas person, of—
(a) an interest in land if—
(i) the land is sensitive under Part 1 of Schedule 1; and
(ii) the interest acquired is a freehold estate or a lease, or any other interest, for a term of 3 years or more (including rights of renewal, whether of the grantor or grantee), and is not an exempted interest; or
(b) rights or interests in securities of a person (A) if A owns or controls (directly or indirectly) an interest in land described in paragraph (a) and, as a result of the acquisition,—
(i) the overseas person or the associate (either alone or together with its associates) has a 25% or more ownership or control interest in A; or
(ii) the overseas person or the associate (either alone or together with its associates) has an increase in an existing 25% or more ownership or control interest in A; or
(iii) A becomes an overseas person.