(13)The Commission, in cooperation with ESMA, will monitor any changes introduced in the legal and supervisory arrangements affecting UK CSDs, market developments as well as the effectiveness of supervisory cooperation, including prompt information exchange between ESMA and the Bank of England. The Commission might undertake a review at any time, where relevant developments make it necessary for the Commission to re-assess the equivalence granted by this Decision, including where the terms of the cooperation arrangements concluded between ESMA and the Bank of England are not respected or do not allow for an effective assessment of the risk that UK CSDs pose to the Union or its Member States.