The first ever Rickmob (flash mob + rickroll) took place yesterday, 6 pm, in Liverpool Street Station, London, UK

From the facebook event:

1. Find a spot in the main concourse area (not on the balconies), and make sure you're near to the arrivals/depatures board right in the centre of the station. We can look up at those and look like genuine commuters before we sing.

1. There will be NO HORN! Please use the digital clock on the arrivals/departures board, and at exactly 6pm begin singing (the first line is of course 'We're no strangers to love').

2. Sing LOUD! This will help us get in sync and cause maximum confusion and entertainment.

3. Before we sing, try to look as inconspicuous as possible. I know this will be hard for those in the polo neck / overcoat combo but we should aim for the element of surprise...

4. Don't forget to print out the lyrics if you can't remember them, and have a final listen to the melody before you come. Don't be afraid to share your lyrics print out with friendly passers by.. infact, actively encourage people to join in!

5. If you are interviewed by the media, please give NONSENSE answers. Drop in a random lines from Never Gonna Give You Up. Do not be coherent or charming. This is just for fun and as ever the media will want to delve deeper into something that has no real point but is just about fun!

6. We'll be drinking after in the nearby Pitcher & Piano on Bishopsgate

Rick Astley inspired dancing is highly recommended along with the singing. Overcoats and black polo necks optional.