(13)In the event of the exceptional situation of the withdrawal of the United Kingdom from the Union without an agreement, cooperation arrangements established pursuant to Article 25(7) of Regulation (EU) No 648/2012 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 CCPs to the Union or its Member States, either directly or indirectly. The cooperation arrangements should therefore specify the mechanisms and procedures for the prompt exchange of information related to the clearing activities of UK CCPs with respect to financial instruments denominated in Union currencies, trading venues, clearing participants as well as subsidiaries of Union credit institutions and investment firms; to interoperability arrangements with other CCPs; to own resources; to default funds composition and calibration, to margins, liquid resources and collateral portfolios including haircut calibrations and to stress tests; the prompt notification of any change affecting UK CCPs or the United Kingdom legal and supervisory arrangements applicable to UK CCPs; as well as the mechanism for the prompt notification of ESMA of any developments with regard to UK CCPs that could affect the monetary policy in the Union.