Where a local authority's proposals under section 25 do not involve a form of executive for which a referendum is required, the authority must implement the proposals in accordance with the timetable included in the proposals.
Any reference in this Part to a form of executive for which a referendum is required is a reference to—
a mayor and cabinet executive, or
a mayor and council manager executive, or
a form of executive prescribed in regulations under section 11(5) which is expressed in those regulations to be a form of executive for which a referendum is required.