(1) For the purposes of section 29(2)(c)(i), a “relevant collaborative unit” is a unit that falls within subsection (2) or (3).
(2) A unit falls within this subsection if—
(a) it consists of two or more police forces whose chief officers of police have made an agreement under section 22A of the Police Act 1996, and
(b) the agreement relates to the discharge by persons holding offices, ranks or positions with any of the forces of functions in connection with the conduct or use of the covert human intelligence source concerned.
(3) A unit falls within this subsection if—
(a) it consists of one or more police forces and the National Crime Agency,
(b) it is in place by virtue of an agreement made under section 22A of the Police Act 1996, and
(c) the agreement relates to the discharge by persons holding offices, ranks or positions within any such force, or by persons who are National Crime Agency officers, of functions in connection with the conduct or use of the covert human intelligence source concerned.
(4) In the case of a relevant collaborative unit that falls within subsection (2), a person is a “qualifying person” for the purposes of section 29(4A) if—
(a) the person holds an office, rank or position with a police force whose chief officer of police is a party to the agreement mentioned in subsection (2)(a) above, and
(b) the person is permitted by the terms of the agreement to have the responsibility mentioned in section 29(4A)(a) or (c) or the general oversight mentioned in section 29(4A)(b).
(5) In the case of a relevant collaborative unit that falls within subsection (3), a person is a qualifying person for the purposes of section 29(4A) if—
(a) the person—
(i) is a National Crime Agency officer, or
(ii) holds an office, rank or position with a police force whose chief officer of police is a party to the agreement mentioned in subsection (3)(b) above, and
(b) the person is permitted by the terms of the agreement to have the responsibility mentioned in section 29(4A)(a) or (c) or the general oversight mentioned in section 29(4A)(b).
(6) For the purposes of this section references to a police force are to the following—
(a) any police force maintained under section 2 of the Police Act 1996 (police forces in England and Wales outside London),
(b) the metropolitan police force, and
(c) the City of London police force.