2A.—(1) For the purposes of this Act, any prohibition in this Act or any other enactment or rule of law on marriage between two persons of the opposite sex arising by virtue of a relationship of consanguinity or affinity between them, shall, subject to any necessary modifications, apply to marriage between two persons of the same sex as it applies to marriage between two persons of the opposite sex.

(2) A marriage purported to be solemnised which contravenes a prohibition referred to in subsection (1) shall be void.]