(1)A person is a priority successor of the contract-holder if—
(a)he or she—
(i)is the spouse or civil partner of the contract-holder, or
(ii)lives together with the contract-holder as if they were spouses or civil partners, and
(b)he or she occupied the dwelling as his or her only or principal home at the time of the contract-holder’s death.
(2)But no person is a priority successor of the contract-holder if the contract-holder was a priority successor in relation to the occupation contract.