Without prejudice to the generality of section 111 of the [1957 c. 56.] Housing Act 1957 or section 1(2) of the [1975 c. 28.] Housing Rents and Subsidies (Scotland) Act 1975 (power to make reasonable charges for accommodation provided by a local authority), a housing authority may require a person towards whom they were subject to a duty under section 3(4), 4 or 5 above—
(a)to pay such reasonable charges as they may determine in respect of any accommodation which they secure for his occupation (either by making it available themselves or otherwise); or
(b)to pay such reasonable amount as they may determine in respect of sums payable by them for accommodation made available to him by another person.