ust over half of Britain’s businesses believe the country is at risk of a brain drain after Brexit, with many worried in particular about a shortage of tech skills, according to research by cloud-based software company Salesforce.com.

Meanwhile, Virgin boss Sir Richard Branson has said a no-deal Brexit would cause the pound to plummet and be worth the same as the dollar.

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The Trump administration has launched an investigation into French plans to bring in a special tax targeting big technology companies, which could result in the US imposing trade tariffs on Paris.