In October 2016, Theresa May promised a "Great Repeal Bill", which would repeal the European Communities Act 1972 and restate in UK law all enactments previously in force under EU law.
A report published in March 2017 by the Institute for Government commented that, in addition to the Great Repeal Bill, primary and secondary legislation will be needed to cover the gaps in policy areas such as customs, immigration and agriculture [REF].