The Railways (Access, Management and Licensing of Railway Undertakings) (Amendments etc.) (EU Exit) Regulations 2019

Regulations 9(a), 13(b) and (c) and 21(b) are made in exercise of the powers in section 2(2) of the European Communities Act 1972 (c. 68) in order to take advantage of derogations from provisions of directly applicable EU tertiary legislation which apply at the option of individual Member States.

Link: The Railways (Access, Management and Licensing of Railway Undertakings) (Amendments etc.) (EU Exit) Regulations 2019
Source: Legislation .gov.uk