22. Where the relevant person occupies a dwelling as his only or main residence which is also occupied by a person other than one to whom paragraph 21 or 39 refers and there is a contractual liability to make payments to the relevant person in respect of the occupation of the dwelling by that person or a member of his family –
(a)£4 of the aggregate of any payments made in any one week in respect of the occupation of the dwelling by that person or a member of his family, or by that person and a member of his family; and
(b)a further £9·25, where the aggregate of any such payments is inclusive of an amount for heating.