The RMT union today confirmed the dates of its next strike for drivers on the London Underground, which will run between 6.30pm on 8 July and 6.30pm on 9 July.
Workers belonging to the RMT and TSSA unions voted "overwhelmingly" in favour of strike action yesterday, after a dispute about a 24-hour weekend Tube service, due to be introduced in September.
Yesterday, RMT general secretary Mick Cash called the Night Tube Boris Johnson's "vanity project".
"The management, in a mad dash to bulldoze through the night running stunt, have smashed apart long-term agreements and have resorted to trying to bully staff into accepting roster changes at a local level," he said.
However, London Underground chief operating officer Steve Griffiths said Londoners "overwhelmingly back the Night Tube".
"It will make life easier for everyone, cut journey times, create jobs and boost the economy," he said.