No clergyman in holy orders or minister of any religious denomination shall be compelled, by virtue of any provision in the Acts set out in Part II of the Schedule to this Act or any other enactment or any rule of law, to solemnize[F1 a marriage which, apart from Article 18 of the Family Law (Miscellaneous Provisions) (Northern Ireland) Order 1984, would have been void by reason of the relationship of the persons to be married,], or to permit such a marriage to be solemnized in the church, chapel or other place of public worship of which he is the minister.