What to say in an introduction to such a timely and comprehensive set of Concurrences updates of competition law developments in the UK - other than suggest very strongly, that you read them all. As with most jurisdictions, the enforcement agency - the Competition and Markets Authority (CMA) - is the main actor. However, this past year has really been one of strong collaboration with concurrent regulations and government departments. The greatest cooperation with concurrent regulators is truly in the digital space, including a new Digital Regulation Cooperation Forum, bringing in telecoms, financial services and privacy concerns into a collaborative space. This foundation of cooperation among agencies bodes well for the bedding down and implementation of the eventual new ex ante pro-competitive regulation in the UK.