‘Between Two Unions: Brexit and the Secessionist Challenges in the UK’

The decision of the UK Government to withdraw from the EU, the single market and the customs union, has left the two constituent nations that voted to remain in the Brexit referendum with a hard choice. Will they continue to be part of the United Kingdom or will they try to re-accede to the European Union? The chapter aims at analysing this question from a legal point of view. In particular, it discusses the constitutional pathways that Scotland and Northern Ireland can use and the challenges that they have to face in order to secede from the UK and re-join the EU.