A person does not contravene section 29, so far as relating to gender reassignment discrimination, only because of anything done in reliance on section 5B of the Marriage Act 1949 (solemnisation of marriages involving person of acquired gender).

A person (A) whose consent to the solemnisation of the marriage of a person (B) is required under section 44(1) of the Marriage Act 1949 (solemnisation in registered building) does not contravene section 29, so far as relating to gender reassignment discrimination, by refusing to consent if A reasonably believes that B's gender has become the acquired gender under the Gender Recognition Act 2004.

Sub-paragraph (4) applies to a person (A) who may, in a case that comes within the Marriage Act 1949 (other than the case mentioned in sub-paragraph (1)), solemnise marriages according to a form, rite or ceremony of a body of persons who meet for religious worship.

A does not contravene section 29, so far as relating to gender reassignment discrimination, by refusing to solemnise, in accordance with a form, rite or ceremony as described in sub-paragraph (3), the marriage of a person (B) if A reasonably believes that B's gender has become the acquired gender under the Gender Recognition Act 2004.