Local Government Act 1993 No 30
Current version for 14 May 2020 to date (accessed 5 June 2020 at 08:05)
Chapter 4 Part 1 Section 10C
10C   Notice of likelihood of closure not required in urgent cases
Part of a meeting of a council, or of a committee of the council of which all the members are councillors, may be closed to the public while the council or committee considers a matter that has not been identified in the agenda for the meeting as a matter that is likely to be considered when the meeting is closed, but only if—
(a)  it becomes apparent during the discussion of a particular matter that the matter is a matter referred to in section 10A(2), and
(b)  the council or committee, after considering any representations made under section 10A(4), resolves that further discussion of the matter—
(i)  should not be deferred (because of the urgency of the matter), and
(ii)  should take place in a part of the meeting that is closed to the public.