Britain's Brexit Countdown: This Is The UK's Brexit Deadline
29 March 2017, 07:00 | Updated: 26 April 2018, 15:40
Theresa May has signed the letter to trigger Article 50 and start the process for Britain to leave the European Union. This is the deadline.
Once Article 50 is triggered, Britain has two years to negotiate a new deal with the EU. That runs to 29th March 2019.