http://www.legislation.gov.uk/ukpga/2019/16/section/1European Union (Withdrawal) Act 2019 (repealed)An Act to make provision in connection with the period for negotiations for withdrawing from the European Union.texttext/xmlenStatute Law Database2020-01-23Expert Participation2020-01-23F11Duties in connection with Article 50 extension. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .