20. Subject to regulations 21, 78 and 79 and Schedule A1(1) (treatment of claims for housing benefit by refugees), a claimant’s weekly applicable amount 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 4;
(b)an amount determined in accordance with paragraph 2 of Schedule 4 in respect of any child or young person who is a member of his family;
(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 4;
(d)the amount of any premiums which may be applicable to him, determined in accordance with Parts III and IV of Schedule 4.
21. Subject to regulations 78 and 79 and Schedule A1, where a claimant 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 4 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 4 in respect of each of his other partners;
(c)an amount determined in accordance with paragraph 2 of Schedule 4 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;
(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 4;
(e)the amount of any premiums which may be applicable to him determined in accordance with Parts III and IV of Schedule 4.
See, for Schedule A1, paragraph 2(2) of Schedule 4 to S.R. 2006 No. 407