Article 50 provides that the UK has two years - some 730 days - to extricate itself from the European Union. The UK must now make a success of complex Brexit negotiations across a number of areas. These areas range from issues like aviation rights and farming, to legal sovereignty and citizens’ rights.

Theresa May has had her Brexit deal, which laid out a framework for leaving that was agreed by the EU, emphatically rejected by Parliament - and now the Government is considering how to get a deal agreed with the EU and Parliament.

The Telegraph’s Brexit negotiations tracker monitors the progress of the EU-UK talks across 12 key areas. Each area lists the three most pressing issues, analysing progress as the negotiations inch forwards to 29 March 2019.