Brexit implementation period—jurisdiction
Brexit implementation period—jurisdiction

The following Dispute Resolution practice note provides comprehensive and up to date legal information covering:

  • Brexit implementation period—jurisdiction
  • Definitions
  • What is the implementation period?
  • Can the implementation period be extended?
  • What jurisdictional regime applies during the implementation period?
  • Previous drafts of the Withdrawal Agreement
  • After the implementation period
  • Position up to exit day

This Practice Note considers the rules for determining which court has jurisdiction as they will apply between the UK’s departure from the EU on 31 January 2020 and the end of the implementation period, referred to by the EU as the transition period. It considers whether the implementation period can be extended, whether the jurisdictional framework under the Brussels regime, including that set out in Regulation (EU) 1215/2012, Brussels I (recast), applies during the implementation period as well as potential issues that may arise at the end of the implementation period if the UK has not entered into a deal with the EU regarding jurisdiction.

For a quick reference Brexit research aid that answers key questions on Brexit and includes helpful Brexit updates, research tips and resources, see: Brexit Bulletin—key updates, research tips and resources.


This Practice Note using a number of definitions:

  1. European Union (Withdrawal) Act 2018—EU(W)A 2018

  2. European Union (Withdrawal Agreement) Act 2020—EU(WA)A 2020

  3. exit day—is defined in EU(W)A 2018, s 20

  4. implementation period—is defined in EU(WA)A 2020, s 1. ‘Implementation period’ is the UK’s preferred term, while the EU refers to this period as the ‘transition period’

  5. IP completion day—is defined in EU(WA)A 2020, s 39

  6. Joint Committee—is defined in Article 164(1) of the Withdrawal Agreement

  7. Withdrawal Agreement—is defined in the EU(WA)A 2020, s 39(1) as the agreement between the UK and the EU under Article 50(2) of the Treaty on European Union which sets

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