Protesters have forced a delayed start for the controversial Free Speech Forum, due to be held this evening at the Oxford Union. The event, scheduled to begin at 8:30 pm, was delayed by nearly two hours. Five hundred protesters gathered outside the gates of the society, blocking members from entering the grounds for the event. Approximately thirty protesters then climbed over walls and pushed through barriers to enter the chamber, staging a sit-down protest. Irving and Griffin had already arrived at the building several hours prior to the scheduled time of the event. The Union has been under fire from anti-fascist groups for the invitation of Griffin, the leader of the BNP, and Irving, previously imprisoned for holocaust denial in Austria.