It’s been almost a full decade since Britain voted to leave the European Union. Keir Starmer has attacked the ‘wild promises’ of Brexit supporters and said Britain must ‘get closer’ to the single market. A recent YouGov poll found that four-fifths of Labour voters want the government to negotiate a customs union with the EU. Customs union membership might reduce some UK-EU trade barriers by enabling goods to move between the two with less bureaucracy. Enthusiasts now talk about ‘a customs union’ with the EU – a yet-to-be-hashed-out bespoke arrangement – rather than ‘the customs union’.