In a referendum held in the UK on 23 June 2016, 51.9% of the participating electorate voted to leave the European Union. The number of legal questions raised by the referendum are breathtaking. This article tackles two of them: it discusses questions of UK constitutional law involved in deciding...

The European Union is one of the three largest actors in world trade and one of the world’s most influential regulators. This chapter gives an overview over the European Union’s rules for intra-EU trade, describing the EU customs union and its internal market including the “four...