The Court of Appeal's judgment in Lipton and Anr v BA City Flyer Ltd marks a new chapter in UK constitutional law. It provides the first judicial interpretation of section 29 of the European Union (Future Relationship) Act 2020. This general implementation clause aims to ensure the timely incorporation of the EU-UK Trade and Co-operation Agreement 2020 (TCA) into domestic law, by requiring ‘existing domestic law’ to have effect ‘with such modifications as are required for the purposes of implementing’ the TCA. This case note examines the conceptualisation of the legal obligation in section 29, as reflected in Green LJ's opinion. We argue that the judgment also makes a welcome attempt to promote legal certainty, providing a clear sequencing of the steps to be taken by the UK judiciary when interpreting EU retained law post-Brexit, but nevertheless introduces some elements of potential confusion that require clarifying.

中文翻译：

---

澄清英国脱欧后司法机构的职责：Lipton and Anr v BA City Flyer Ltd

上诉法院在Lipton and Anr v BA City Flyer Ltd案中的判决标志着英国宪法的新篇章。它提供了对 2020 年欧盟（未来关系）法案第 29 条的第一个司法解释。该一般实施条款旨在确保及时将 2020 年欧盟-英国贸易与合作协议（TCA）纳入国内法，通过要求“现有的国内法”在“为实施 TCA 的目的而进行必要的修改后”生效。本案例说明审查了第 29 条中法律义务的概念化，这反映在 Green LJ 的意见中。我们认为，该判决还为促进法律确定性做出了可喜的尝试，提供了英国司法机构在解释英国退欧后保留的欧盟法律时应采取的步骤的明确顺序，