Hangover at teatime: Why 'Brexit' breakup is so very hard to do
In a paper for the Centre for European Reform in London, Jean-Claude Piris, a former chief EU legal adviser, floated seven alternatives. These include hashing out a UK-EU free-trade agreement, joining the likes of Norway in broad market-access arrangements, copying Switzerland's sector-by-sector accords or conducting business under the aegis of the World Trade Organization.