Part 1: Digital Markets Chapter 4: Pro-Competition Interventions Section 47: Power to begin a PCI investigation etc
This section gives the CMA the power to launch a formal evidence gathering process - a PCI investigation - where it suspects there is a competition problem related to an undertaking’s relevant digital activity, and sets out its duties during the investigation. A PCI investigation may relate to one or more designated undertakings and multiple designated digital activities. The CMA will decide whether to open a PCI investigation on the basis of available evidence: this may include that arising from complaints submitted by third parties; evidence, where appropriate, from the CMA’s other tools; or from referrals of information from other regulators.
	Subsection (3) states that the CMA may launch a fresh PCI investigation in respect of a designated undertaking in cases where it had previously made a decision to not implement a PCI in relation to the undertaking for either the same digital activity or the same AEC.