The CMA will, as standard, ask merger parties whether they have also notified or intend to notify the merger to other competition authorities. Where this is the case, the CMA will typically ask the merger parties to provide a confidentiality waiver allowing the CMA to exchange confidential information with the relevant competition authorities specified in that waiver in respect of the merger. The CMA will then typically contact the relevant officials at the other competition authorities to discuss and share information on the merger as appropriate: https://www.gov.uk/government/publications/confidentiality-waiver-template