For the purposes of section 1(4), a joint-claim couple shall include any joint-claim couple within the meaning given in section 1(4) of the Act where at least one member F2is aged 18 or over and was born after F328th October 1957, unless a member of the couple is treated as responsible for a child or young person under regulation 77(3), or the couple has care of a child or young person in one or more of the circumstances mentioned in regulation 78(4), or a child or young person is living with either member of the couple in the circumstances mentioned in regulation 78(8).

In a case where a person would (but for these Regulations) be a member of more than one joint-claim couple, a joint-claim couple means the couple of which he is a member which that person nominates (or in default of such nomination, which the Secretary of State nominates), to the exclusion of any other couple of which he is a member.