British exporters would face an extra £5.6 billion ($8.2 billion, 7.2 billion euros) of annual customs duties if the country votes to leave the EU, the World Trade Organization (WTO) chief will warn on Tuesday.
Britain would have to negotiate new trade deals with the EU and with each of the 58 countries that have free-trade deals with the bloc, Director General Roberto Azevedo was to say at a conference in London, according to a copy of the speech obtained by AFP.
GMT 14:30 2017 Thursday ,27 AprilTwo US troops killed fighting IS in Afghanistan
GMT 14:28 2017 Thursday ,27 AprilKenya opposition names Raila Odinga as presidential candidate
GMT 13:18 2017 Thursday ,27 AprilKremlin urges restraint after alleged Israeli strikes on Syria
GMT 12:58 2017 Thursday ,27 AprilEurozone recovery 'increasingly solid'
GMT 12:32 2017 Thursday ,27 AprilRussian navy ship sinks, crew rescued: Turkish coastguard
GMT 12:31 2017 Thursday ,27 AprilTurkey's AKP to hold extraordinary congress May 21
GMT 12:13 2017 Thursday ,27 AprilGerman inflation shoots up to 2.0% in April
GMT 12:11 2017 Thursday ,27 AprilRussian navy ship damaged in collision off Turkish coast