(11)However, this Decision is based on the legal and supervisory arrangements applicable to UK CCPs on the day after the withdrawal of the United Kingdom from the Union. Those legal and supervisory arrangements should only be considered equivalent where the requirements applicable to CCPs in United Kingdom domestic law are maintained and continue to be effectively applied and enforced on an ongoing basis. The effective exchange of information and coordination of supervisory activities between ESMA and the Bank of England is therefore an essential condition for maintaining the determination of equivalence.