O'Driscoll, who also uses the name Max Gastone, was taking part in a demonstration by the campaign group Stop Huntingdon Animal Cruelty (SHAC) at GlaxoSmithKline in Ware, Hertfordshire on 16 June 2006.
Four police witnesses gave evidence. Officers said that O'Driscoll did not cooperate with the police and used a loudhailer to disrupt the local community.
The Court heard that in addition to GlaxoSmithKline, two schools and a gymnasium were affected by the protest. One of the schools was holding examinations.
Defence counsel argued that the Section 14 directions were invalid. The Court held that they were both lawful due to the nature of the location and the behaviour and noise made by the activists.
He was fined £350 with £450 costs.