(1)The Secretary of State may issue guidance to the Mayor concerning the exercise of any function under or by virtue of section 383(1), 384(3) or (4) or 385(1) above by him or any body or person authorised to exercise the function under section 380 above.
(2)In deciding whether or how to exercise that function, the Mayor, or body or person, shall have regard to any guidance issued under subsection (1) above.