Following the United Kingdom's exit from the European Union, the United Kingdom's Representation to the European Union (UKRep) in Brussels becomes the United Kingdom's Mission to the European Union, shortened to UKMis Brussels. Formally, the Mission is titled the 'United Kingdom of Great Britain and Northern Ireland's Mission to the European Union and the European Atomic Energy Community'.
The Mission continues to be led by Sir Tim Barrow, who becomes the UK's Ambassador to the EU. Katrina Williams, formerly Deputy Permanent Representative, becomes the UK's Deputy Ambassador to the EU. Matt Baugh, formerly UK Ambassador to the EU Political and Security Committee, becomes Director, External Security and Development.
These changes follow the UK putting in place all the necessary legal steps for the Withdrawal Agreement to come into force at 11pm on 31 January, including Prime Minister Boris Johnson signing the Withdrawal Agreement on 24 January.
After Foreign Secretary Dominic Raab signed the Instrument of Ratification, our final legal obligation confirming the UK's departure, Sir Tim Barrow deposited the Instrument with the Council of the European Union on 29 January.
Following ratification by both parties, the Agreement entered into force at 11pm on Friday 31 January, bringing about the UK's departure from the EU.
