(6)First, the legal and supervisory arrangements of a third country must ensure that CSDs in that third country comply with legally binding requirements which are in effect equivalent to the requirements laid down in Regulation (EU) No 909/2014. Until 29 March 2019, UK CSDs must comply with the requirements laid down in Regulation (EU) No 909/2014. As part of the European Union (Withdrawal) Act 2018, the United Kingdom incorporated on 26 June 2018 the provisions of Regulation (EU) No 909/2014 into United Kingdom domestic law with effect from the date of the United Kingdom's withdrawal from the Union.