(12)In the event of the exceptional situation of the withdrawal of the United Kingdom from the Union without an agreement, and given the importance of UK CSDs to market operators in the Union, cooperation arrangements established pursuant to Article 25(10) of Regulation (EU) No 909/2014 must ensure that ESMA has immediate access, on an ongoing basis, to all information requested by it. That information includes but is not limited to information allowing for the assessment of any material risks posed by UK CSDs to the Union or its Member States, either directly or indirectly. The cooperation arrangements should therefore specify the mechanism for the exchange of information between ESMA, the competent authorities of the Member States in which a CSD has a branch or provides CSD services (the ‘host Member State’) and the Bank of England, including access to all information regarding UK CSDs that is requested by ESMA and in particular access to information requested by the competent authority in the host Member State in the cases referred to in Article 25(7) of Regulation (EU) No 909/2014 regarding the periodic reporting on UK CSDs' activities in the host Member State; the communication of the identity of the issuers and participants in the securities settlement system operated by UK CSDs or any other relevant information concerning UK CSDs' activities in the host Member State; as well as the prompt notification of ESMA of any developments with regard to UK CSDs that could affect the monetary policy in the Union and of any changes in the legal and or supervisory arrangements applicable to UK CSDs; the mechanism for prompt notification of ESMA where the Bank of England deems a CSD that it is supervising to infringe the conditions of its authorisation or of other applicable law; and the procedures concerning the coordination of supervisory activities including, where appropriate, on-site inspections.