That's simply wrong Pete
Under public international law, the EU's FTAs with third countries will no longer apply to the UK after Brexit, since the UK will be unable to rely on existing customary international law on state succession to treaties.
First, the UK's exit from the EU is not legally a case of state succession. Indeed, rather than a state the EU is a
sui generis international organization based on a number of treaties among sovereign states.
Second, the 1978
Vienna Convention on Succession of States in Respect of Treaties ("
Convention"), often cited by supporters of the state succession theory, does not apply to the effects of a succession of states in respect of international agreements concluded between states and other subjects of international law. Since the EU is not a state, the agreements concluded between the EU and third countries, such as its FTAs, do not fall under the scope of the Convention. It should moreover be noted that the UK is not a party to the Convention.
Third, the legal provisions of the EU's FTAs often provide guidance on their territorial application. As an example, Article 15.5 of the Korea-EU FTA states that the agreement shall apply "to the territories in which the Treaty on European Union and the Treaty on the Functioning of the European Union are applied and under the conditions laid down in those Treaties". Since Brexit necessarily implies that the EU Treaties no longer apply to the UK, the latter would also no longer fall under the territorial scope of application of the Korea-EU FTA and other FTAs with similar provisions.
The default rule therefore seems to be that the EU's existing FTAs will no longer apply to the UK upon its withdrawal from the EU.
https://www.expertguides.com/articl...ade-agreements-of-the-european-union/arpkzakq