Britain’s international merchandise trade slumped 17.3% year over year in March, the fastest since May 2009, as COVID-19 restrictions took a toll on both demand and supply chains. That included a 23.6% slump in trade with the EU in part due to shorter supply chains and earlier closures of industrial activity. Negotiations to put in place a new trade and customs deal for the current post-Brexit withdrawal period in 2021 are underway but may be stuck on a number of topics including fisheries, regulatory standard setting and court jurisdictions. There’s only a few weeks left to agree a deal...