Who implements it and who enforces it in the UK? Naomi June 08, 2018 10:36 Updated Follow A public entity called the Open Banking Implementation Entity has been tasked with the implementing the CMA order. The CMA enforces it. Related articles Where does TrueLayer come in? How does Open Banking provide more choice for consumers? What is the difference between PSD2 and Open Banking? Is it safe? What is Open Banking? Comments 0 comments Please sign in to leave a comment.