
It was at Lancaster House in 1988 that Margaret Thatcher delivered a speech heralding British membership of the single market. Twenty eight years later, at the same venue, Theresa May confirmed the UK’s retreat.
As had been clear ever since her Brexit speech in October, May recognises that her primary objective of controlling immigration is incompatible with continued membership. Inside the single market, she noted, the UK would still have to accept free movement and the rulings of the European Court of Justice (ECJ). “It would to all intents and purposes mean not leaving the EU at all,” May surmised.