On 29 March 2019, unless the European Council unanimously decides otherwise, the United Kingdom will leave the European Union and a new trading arrangement between the EU and the UK will come into effect. If no bespoke deal is approved, trading arrangements will be conducted on World Trade Organisation terms. The UK will also lose any arrangements to which it is a party through the EU: there are more than 750. This is one reason the UK’s negotiating position with the EU is asymmetrical: even if ‘no deal’ harms both sides’ trade, it will be much worse for the UK.