A slump in trade with the EU should spur ministers to negotiate a fundamental rewrite of post-Brexit rules to more closely align the UK with Brussels, a leading left-of-centre thinktank has said. Donald Trump’s arrival in the White House next week should also encourage the government to get on the front foot in trade agreement talks with the US to support the growth of UK exports, said the Institute for Public Policy Research (IPPR). In a report revealing the full extent of the decline in Britain’s trading position that has been inherited by the Labour government, the IPPR said ministers