79. In rule 6.5 (Petition for nullity on ground of insanity, etc)—
(a)in paragraph (1), after “nullity” insert “of marriage”; and
(b)after paragraph (1) insert—
“(1A) Where a petition for nullity of civil partnership has been presented on the ground that at the time of the formation of the civil partnership the respondent was suffering from mental disorder within the meaning of the Mental Health (Northern Ireland) Order 1986(1) of such a kind or to such an extent as to be unfitted for civil partnership, then, whether or not the respondent gives notice of intention to defend, the petitioner shall not proceed with the cause without the leave of the Master.”.