In section 450C(4) of the Housing Act 1985 (c. 68) (loans in respect of service charges on former right to buy flats and other housing authority flats)—
in paragraph (a) for "as regards the rate of interest payable on" substitute , and" in a case where a rate of interest is payable on some or all of "
after paragraph (a) insert—aain a case where amounts calculated by reference to the market value of the flat are payable instead of (or as well as) interest, make provision about calculating the market value of the flat (including imposing charges for the services of district valuers);.
The powers conferred by section 450C(3) of that Act include, in relation to loans made before the coming into force of subsection (1) above, the power to prescribe terms, or (as the case may be) make provision, of the kind envisaged by subsection (1)(b) above.
But any such terms or provision are not to apply to any particular loan made before the coming into force of subsection (1) above unless the landlord and tenant agree that they are to apply in that case.