Brexit timeline

The UK formally notified the European Council of its decision to withdraw from the EU on 29 March 2017. This triggered a two-year timeframe to negotiate a withdrawal agreement. Our timeline illustrates what has happened to date and how we expect the process to unfold going forward.


1 Jul

New requirements for export health certificates, phytosanitary certificates and physical checks on SPS goods at border control posts. Safety and security declarations on imports also now required

30 Jun

EU temporary equivalence decision for UK Central Counterparties ends

25 Jan

UK Parliament’s House of Lords opens inquiry into post-Brexit commercial insurance regulation


1 Jan

Hauliers must check if they need a report for inspection if arriving at the Port of Dover, Eurotunnel or Holyhead



Deadline for the EU and the UK to consider options for the reciprocal liberalisation of ownership and control requirements for air carriers

End of one-year ‘Rules of Origin’ easement for UK exporters

1 Jul

E-Commerce changes from GB to the EU commence: VAT compliance impacts for merchants selling through the online marketplace

30 Jun

Deadline for applying to the EU Settlement Scheme

Data flows between the EU and UK through ‘data adequacy bridge’ ends

Temporary equivalence for settlement of EU securities trades by UK CSDs ends


Regulatory requirements under EU law to the import of certain meat products cease to apply to exports of meat products from GB to NI

30 Apr

Deadline for GB-based holders of existing EU REACH registrations to complete the ‘grandfathering’ process with HSE

Temporary Data Adequacy ends unless extended until end June 2021

28 Apr

EU Parliament ratifies Brexit trade deal

31 Mar

Deadline for UK-EU discussions to establish a framework for financial services regulatory cooperation

15 Mar

EU formally launches legal action against the UK

3 Mar

UK Government unilaterally extends grace periods on exports from Britain to Ireland


Grace period on providing export health certificates on food supplies from GB to NI ends

19 Feb

European Commission launches process on personal data flows to UK

1 Jan

New UK-EU relationship begins and the Northern Ireland Protocol comes into effect, bringing changes including customs procedures for UK-EU trading

Loss of passporting rights for UK and EU firms across financial services sector


31 Dec

Transition period due to end

9 Sep

UK Government publishes Internal Market Bill

30 Jun

Deadline for extending the transmission period passes

31 Jan

UK leaves the EU

23 Jan

European Union (Withdrawal Agreement) Bill becomes law


19 Dec

European Union (Withdrawal Agreement) Bill published 

12 Dec

General Election results in Conservative Party majority

28 Oct

EU agrees to Brexit extension until 31 January 2020

17-18 Oct

European Council Summit

14 Oct

Queen's speech

24-26 Aug

G7 Summit in Biarritz, France

24 Jul

Boris Johnson takes over as UK Prime Minister

23 May

The UK votes in the European Parliament elections

10 Apr

The UK and the EU27 agree to extend A50 until 31 October 2019

29 Mar

Government loses ‘Meaningful Vote 3’

21 Mar

EU27 leaders grant short extension of A50 (to 12 April or 22 May)

20 Mar

Prime Minister writes to European Council asking to extend Article 50 until 30 June

13 Mar

Parliament votes to rule out a ‘no deal’ Brexit

12 Mar

Government loses ‘Meaningful Vote 2’ on Brexit deal

15 Jan

Government loses ‘Meaningful Vote’ on Brexit deal

9-15 Jan

Five days of Brexit debates on the EU Withdrawal Agreement


13 Dec

Special meeting of European Council reconfirms conclusions of 25 November

11 Dec

ECJ rules that UK can unilaterally revoke Article 50

10 Dec

Prime Minister delays planned meaningful vote on Brexit deal

4 Dec

Government found in contempt of Parliament over handling of Brexit legal advice

25 Nov

EU27 leaders endorse draft Brexit withdrawal agreement and approve draft political declaration on future EU-UK relations

14 Nov

Government publishes draft Brexit withdrawal agreement

18 Oct

European Council meeting with an aim to finalising the terms of withdrawal and the future EU-UK relationship

30 Sep-3 Oct

Conservative Party annual conference

23-26 Sep

Labour Party annual conference

20 Sep

EU leaders meet with Theresa May at informal summit in Austria

4-13 Sep

UK parliament returns from recess


Summer recess

12 Jul

Brexit white paper on financial services

26 Jun

EU (Withdrawal) Bill Royal Assent

End of Mar

End of Phase 2 negotiations: UK and EU agree terms for transition/implementation period


House of Lords committee stage of the EU (Withdrawal) Bill completed

23 Mar

European Council publishes new draft guidelines on the framework for future EU-UK relations

14 Mar

European Parliament publishes a resolution on concerns and priorities for the Brexit deal


8 Dec

Phase 1 negotiations conclude

29 Mar

Article 50 triggered

17 Jan

UK Prime Minister sets out ‘Plan for Britain’


23 Jun

UK referendum vote to leave EU