Who implements Open Banking and who enforces it in the UK? Naomi February 20, 2019 10:22 Updated Follow A public entity called the Open Banking Implementation Entity has been tasked with implementing the CMA (Competition & Markets Authority) order. The CMA enforces it. More information can be found on the Open Banking Implementation Entity page and CMA. Related articles How does Open Banking provide more choice for consumers? Where does TrueLayer come in? What is the difference between PSD2 and Open Banking? Is it safe? What banks are we currently integrated with? Comments 0 comments Please sign in to leave a comment.