Section 136 of the [1993 c. 28.] Leasehold Reform, Housing and Urban Development Act 1993 (levy on local authorities in respect of dwelling-house disposals) shall have effect, and be deemed always to have had effect, with the following subsection inserted after subsection (4)—
“(4A)The power of the Secretary of State to determine a formula for the purposes of item D in subsection (3) shall include power to determine that, in such cases as he may determine, item D is to be taken to be equal to item CR.”