The UK's CMA plays a vital role in ensuring competitive markets, protecting consumers, and fostering innovation. Its merger control regime aims to prevent anti-competitive practices, and its new digital markets competition regime targets firms with substantial market power. International cooperation among competition authorities, especially in the digital markets sector, is crucial for addressing global competition issues effectively. Competition law advisors should engage early with the CMA, stay informed about its processes and reforms, and understand that the CMA's jurisdiction extends to deals impacting UK markets, even involving non-UK companies.