12. Subject to regulation 13 (polygamous marriages), the weekly applicable amount of a relevant person shall be the aggregate of such of the following amounts as may apply in his case—
(a)an amount in respect of himself or, if he is a member of a couple, an amount in respect of both of them, determined in accordance with paragraph 1(1), (2) or (3), as the case may be, of Schedule 1 (applicable amounts);
(b)an amount determined in accordance with paragraph 2 of Schedule 1 in respect of any child or young person who is a member of his family, except a child or young person whose capital, if determined in accordance with Chapter VI of Part IV (income and capital) in like manner as for the relevant person, except as provided in regulation 29(5) (modifications in respect of children and young persons), would exceed £5,000;
(c)if he is a member of a family of which at least one member is a child or young person, an amount determined in accordance with Part II of Schedule 1 (family premium);
(d)the amount of any premiums which may be applicable to him determined in accordance with Parts III and IV of Schedule 1 (premiums).
13. Where a relevant person is a member of a polygamous marriage, his weekly applicable amount shall be the aggregate of such of the following amounts as may apply in his case—
(a)the highest amount applicable to him and one of his partners determined in accordance with paragraph 1(3) of Schedule 1 as if he and that partner were a couple;
(b)an amount equal to the difference between the amounts specified in sub-paragraphs (3)(b) and (1)(b) of paragraph 1 of Schedule 1 in respect of each of his other partners;
(c)an amount determined in accordance with paragraph 2 of Schedule 1 in respect of any child or young person for whom he or a partner of his is responsible and who is a member of the same household, except a child or young person whose capital, if determined in accordance with Chapter VI of Part IV (income and capital) in like manner as for the relevant person, except as provided in regulation 29(5) (modifications in respect of children and young persons), would exceed £5,000;
(d)if he or another partner of the polygamous marriage is responsible for a child or young person who is a member of the same household, the amount specified in Part II of Schedule 1 (family premium);
(e)the amount of any premiums which may be applicable to him determined in accordance with Parts III and IV of Schedule 1 (premiums).