Pascal Lamy, former head of the WTO, says Britain will have to take sides if new US administration slaps hefty tariffs on imports, as fears grow over possible trade war

The former head of the World Trade Organisation (WTO) has said that the UK should side with the European Union over trade and economic policies rather than a Donald Trump-led US, as fears grow over a possible global trade war.

Pascal Lamy, who was head of the WTO from 2005 to 2013, said it was clear that the UK’s interests lay in staying close to the EU on trade, rather than allying with Trump, not least because it does three times more trade with Europe than the US.

His comments came after a key Trump supporter, Stephen Moore, said on Friday that the UK should reject the EU’s “socialist model” if it wanted to have any realistic chance of doing a free trade deal with the US under Trump and, as a result, avoid the 20% tariffs on exports that the president-elect has promised.