The US and Britain will launch trade negotiations by videoconference today following the UK's exit from the EU, as both allies struggle with the effects of the coronavirus pandemic and aim to shore up domestic supply chains. But hopes the talks - Washington's first major new trade negotiation in 2020 - will boost transatlantic relations could be scuppered by reports the White House could pull spy planes, intelligence officials and other US assets out of the UK after Downing Street agreed China's Huawei can build its 5G network.