Part 1: Call-in for national security Chapter 2: Interpretation Trigger events in relation to qualifying entities and qualifying assets
Sections 5-12 provide the criteria for the acquisitions of control over entities or assets that qualify for assessment by the Secretary of State under the national security regime. These acquisitions in scope of the call-in power (section 1) are described as "trigger events".
	Section 6 describes those acquisitions which are "notifiable acquisitions". A notifiable acquisition takes place when a person acquires certain shares or voting rights in a qualifying entity specified in regulations by the Secretary of State. Notifiable acquisitions must be approved by the Secretary of State before completing, lest they be legally void.