4. Any premises occupied in whole or in part—
(a)by a partner or relative of a single claimant or any member of the family as his home where that person is either aged 60 or over or incapacitated;
(b)by the former partner of the claimant as his home; but this provision shall not apply where the former partner is a person from whom the claimant is estranged or divorced or with whom he had formed a civil partnership that has been dissolved.