88E+W+SIn Schedule 16 to that Act (local authority mortgage interest rates), for paragraph 4 there shall be substituted the following paragraph—
“4(1)The rate declared under paragraph 3(a) or (b) shall be a rate calculated in such manner as the Secretary of State may determine.
(2)A determination under this paragraph—
(a)may make different provision for different cases or descriptions of cases, including different provision for different areas, for different local authorities or for different descriptions of local authorities; and
(b)may be varied or withdrawn by a subsequent determination.
(3)As soon as practicable after making a determination under this paragraph, the Secretary of State shall send a copy of the determination to the local authority or authorities to which it relates.”