Paragraph 20
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 19 or 40 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 £8.60, where the aggregate of any such payments is inclusive of an amount for heating.