Try these – d) is the obvious one:
9. Circumstances in which a person is to be treated as not liable to make payments in respect of a dwelling
(1) A person who is liable to make payments in respect of a dwelling shall be treated as if he were not so liable where—
(c) his liability under the agreement is—
(i) to his former partner and is in respect of a dwelling which he and his former partner occupied before they ceased to be partners; or
(ii) to his partner´s former partner and is in respect of a dwelling which his partner and his partner´s former partner occupied before they ceased to be partners;
(d) he is responsible, or his partner is responsible, for a child of the person to whom he is liable under the agreement;