‘In the White Paper published in February this year (“The United Kingdom’s exit from and new partnership with the European Union” Cm 9417), the very first point made was that the “Great Repeal Bill” will “remove the European Communities Act 1972 from the statute book and convert the ‘acquis’ – the body of existing EU law – into domestic law”. It was said that “[t]his means that, wherever practical and appropriate, the same rules and laws will apply on the day after [the United Kingdom] leave[s] the EU as they did before”.’
UK Constitutional Law Association, 12th April 2017
Source: www.ukconstitutionallaw.org