Part 1: Call-in for national security Chapter 1: Call-in power Section 2: Further provision about call-in notices
Section 2 concerns matters relating to the limits on the exercise of the call-in power. The power may only be exercised once per trigger event. Where the call-in notice is given in relation to a trigger event that has already taken place, it may only be exercised up to 5 years after the trigger event has taken place and up to 6 months after the Secretary of State has become aware of the trigger event, unless the Secretary of State has been given false or misleading information (see section 22). The 5-year limit does not apply to notifiable acquisitions which have been completed without the approval of the Secretary of State (see section 13).
	Call-in notices may be served in relation to trigger events which take place from the day after the date of introduction of the Act. Section 2(4) sets out the time periods within which the Secretary of State may serve a call-in notice in relation to trigger events that take place between 12 November and the commencement of section 2.