We have decided to defer the launch of Night Tube from 12 September. This is to allow for the successful conclusion of talks and agreement with the trade unions to deliver Night Tube this autumn.
The Night Tube, which will run on some lines all night on Friday and Saturday nights, will transform night time journeys across London. For more information, please visit tfl.gov.uk/nighttube
I will write again with more details, including a launch date when it is confirmed.