There could be further delays down the line for London's Night Tube, as RMT's general secretary Mick Cash has today revealed that representatives from the union were not satisfied with London Underground's latest offer on pay and conditions.
Cash said: "The feedback from the meeting is that the offer has not matched up to the expectations of our members across the combine and falls short in a number of key areas. That feedback will now be considered by the unions executive committee who will make decisions on the next steps that RMT will follow over the Night Tube and pay and conditions issues."
Last week, Transport for London proposed hiring around 140 part-time drivers to help with working through the night, extended a previous three-year pay deal into a fourth year and kept the offer of a £500 bonus on the table.
The Night Tube launch has already been pushed back to March 2016, having originally been on track to start in September.
London Underground has previously promised that, once Night Tube is up and running, nobody will be working any more hours than they currently are, annual leave entitlements will remain unchanged and workers will still be entitled to two days off in seven.