Part 1: Call-in for national security Chapter 4: Procedure
Chapter 4 of Part 1 provides for two routes for persons to notify acquisitions to the Secretary of State in order to receive a call-in decision. Section 14 is a mandatory notification route which applies to notifiable acquisitions (as defined in section 6). Section 18 is a voluntary notification route for trigger events which fall outside the mandatory notification regime. Sections 15, 16 and 17 provide for retrospective validation of notifiable acquisitions which have completed without the approval of the Secretary of State (see section 13).
	Chapter 4 of Part 1 also provides for two mechanisms by which the Secretary of State may obtain information to assist him or her in carrying out his or her functions under the Act. Section 19 allows the Secretary of State to issue an information notice requiring specified information to be provided. Section 20 permits the Secretary of State to issue an attendance notice requiring a person to attend at a specified time and place and to give evidence to the Secretary of State. These powers may be used before or after a trigger event has been called in. Section 22 provides that the Secretary of State may reconsider a decision made under this Act, and affirm, vary or revoke it, if the decision is materially affected by false or misleading information.