Due to the fact that this years event takes place on a Saturday instead of a weekday the turnout should be really huge! Here is a report on the 2014 event which was the largest so far at around 4,000: Russell Brand joins thousands of masked Anonymous Guy Fawkes protesters | Daily Mail Online
Last year heavy rain for three hours before the event seemed to have put of a lot of people as only around one thousand turned out. But this years event could be really big due to it falling on a Saturday. By the way there have been some changes to this years event. The meet up time is now back to 6pm at Trafalgar Square. The organisers changed the meet up time again. I wish they would make their minds up. It is no longer at 1pm but back to 6pm. And there is a new video here to promote this years event: https://www.facebook.com/anonuktv/vi...9603934918825/ I know it says meet at 1pm on the video page but it has now been changed to 6pm.