Section 1 of, and Schedule 1 to, the Financial Services and Markets Act 2023 (c. 29) revokes Regulation (EU) No. 575/2013 of the European Parliament and of the Council of 26 June 2013 on prudential requirements for credit institutions and investment firms and amending Regulation (EU) No 648/2012 (“the Capital Requirements Regulation”). Article 4 of the Capital Requirements Regulation (“Article 4”) sets out definitions of key terms used in that Regulation and other legislation. The full revocation of Article 4 comes into force on 1st January 2027 by virtue of the Financial Services and Markets Act 2023 (Commencement No. 13) Regulations 2026 (S.I. 2026/174 (C. 17)).