Sadiq Khan hit by Tube strike threat as second term begins Dedicated Night Tube drivers will be axed with staff folded into a wider pool 10 May 2021 • 4:27pm Union leaders took the shine off Sadiq Khan’s first day of his second term by threatening strikes on the London Underground. Plans to axe night Tube drivers were opposed by the RMT union, putting staff on a collision course with the capital's mayor, who is also chairman of Transport for London. Mr Khan pledged to “bring London together” as he was sworn in on Monday at Shakespeare’s Globe Theatre on the South Bank.