The Secretary of State may make regulations under section 27(1) in relation to a CCA's area if a proposal for there to be a mayor for the CCA's area has been made to the Secretary of State—
as part of a proposal under section 45, or
in accordance with section 47.
Regulations under section 27(1) may also be made without any such proposal having been made if—
the appropriate authorities consent, or
in the case of an existing CCA, there are one or more non-consenting constituent councils but the CCA and at least two constituent councils consent.
Where regulations under section 27(1) are made by virtue of subsection (2)(b) of this section, the Secretary of State must make regulations under section 25(1)(b) to remove the area of each non-consenting constituent council from the existing area of the CCA.
For the purposes of this section "the appropriate authorities" are—
the constituent councils, and
in the case of regulations in relation to an existing CCA, the CCA.