Local Government Act 1993 No 30
Current version for 14 May 2020 to date (accessed 26 May 2020 at 11:04)
17   What is the effect of a constitutional referendum?
(1)  The decision made at a constitutional referendum binds the council until changed by a subsequent constitutional referendum.
(2)  However, such a decision does not apply to a by-election held after the constitutional referendum and before the next ordinary election.