Night tube London’s night tube on Fridays/Saturdays lights up the economy by £360m; will be £1.54bn over 10 years.  Supports >3,600 jobs & has >500,000 users.  2 peaks – revellers at 01:30 BST & workers at 04:00.  Increase in demand since 2016 launch is double that of day time.  Oxford Circus is busiest entry &…