Sadiq Khan earlier announced that Night Tube services on the Northern Line would commence on 18th November.

Source: Independent >>

This of course comes on the day the Jubilee Line starts running 24 hours services on Friday and Saturdays.

So the big questions:
When is a Northern Line service a Night Tube?
Will there be a couple of fresh pocket maps I wonder?
Will there be any other unusual service patterns like the Secret Night Tube to Epping?
Will it be exactly the same as when I took a trip on the new services last month?