There are several Acts of Parliament related to Brexit that are referred to as the European Union (Withdrawal) Act; in the United Kingdom: The European Union (Notification of Withdrawal) Act 2017, which empowered the prime minister to invoke Article 50 of the Treaty of the European Union The European Union (Withdrawal) Act 2018, which repealed European law or transposed it into British law upon Brexit The European Union (Withdrawal) Act 2019, which obliged the prime minister to seek a delay to Brexit The European Union (Withdrawal) (No. 2) Act 2019, which obliged the prime minister to seek a second delay to Brexit. The European Union (Withdrawal Agreement) Act 2020
And in Gibraltar: The European Union (Withdrawal) Act 2019 (Gibraltar) The European Union (Withdrawal Agreement) Act 2020 (Gibraltar)