This night happens about six times a year in Finsbury Park. It has been going for over 20 years and is part of the New Untouchables events. This one features Northern soul, RnB/blues, motown, boogaloo. Sounds fun!
Here's the link and be sure to click on all the tabs for the different information.
It's an all-nighter, starts at 10 and goes on until 6. It's £8 to get in before midnight and then £10 after (so I would suggest we try to get in before midnight). I'll arrange somewhere to meet first at around 9 closer to the time!