ARCHIVED: This Checklist has been archived and is not maintained. This Checklist sets out the provisions of the EU(W)A 2018 (as amended) alongside the commencement date and the legislation from which that commencement date is determined. Provision Provision heading Commencement date Provision for commencement date Repeal of the ECA 1972 EU(W)A 2018, s 1 Repeal of the European Communities Act 1972 (ECA 1972) Exit day EU(W)A 2018, s 25(4)European Union (Withdrawal) Act 2018 (Commencement No. 4) Regulations 2019, SI 2019/1198, reg 2, which provides that EU(W)A 2018, s 1 came into force on 17 August 2019. Savings for implementation period EU(W)A 2018, s 1A Saving for ECA 1972 for implementation period Exit day EU(WA)A 2020, s 42(7)European Union (Withdrawal Agreement) Act 2020 (Commencement No 1) Regulations 2020, SI 2020/75, reg 4(a) EU(W)A 2018, s 1B Saving for EU-derived domestic legislation for implementation period Exit day EU(WA)A 2020, s 42(7)European Union (Withdrawal Agreement) Act 2020 (Commencement No 1) Regulations 2020, SI 2020/75, reg 4(b) Retention of