16.—(1) A person ceases to be a member of a local authority and a casual vacancy arises in its membership immediately upon he or she becoming disqualified from membership of a local authority under F27[sections 13, 13A] or 182, or under section 20 of the Local Elections (Disclosure of Donations and Expenditure) Act, 1999 F28[, or upon an order under subsection (4)(b) of section 17 of the Criminal Justice (Corruption Offences) Act 2018 for the forfeiture of the office of the person as a member of the local authority taking effect under subsection (6) of that section].

(2) When a person ceases to be a member of a local authority under this section he or she also ceases to be a member of any body to which he or she—

(a) was elected, nominated or appointed by a local authority, or

(b) is a member by virtue of being a member of a local authority.

(3) Nothing in subsection (1) or (2) shall be read so as to affect the validity of anything previously done by the person while a member of the local authority or of the body concerned.

(4) A person to whom a disqualification referred to in subsection (1) applies is so disqualified from being or becoming a member of any committee, joint committee or joint body.