“Matrimonial proceedings” means any proceedings so far as they are one or more of the five following kinds F1(whether relating to a marriage of a man and a woman or a marriage of a same sex couple), namely, proceedings for—

• divorce,

• judicial separation,

• nullity of marriage,

• a declaration as to the validity of a marriage of the F2applicant, and

• a declaration as to the subsistence of such a marriage.