30. A person is a surviving adult dependant in relation to a deceased member or former member if, at the time of the deceased's death—
(a)the person and the deceased were cohabiting as partners in a substantial and exclusive relationship;
(b)the deceased leaves no surviving spouse or civil partner;
(c)the person and the deceased were not prevented from marrying or forming a civil partnership; and
(d)either the person was financially dependent on the deceased or they were financially interdependent.