Plot hole: When the boys go to get Ringo out of the police station, the other 3 are in front of the police officers and Ringo is way behind strolling along with his camera. When they get trapped in the courtyard they are all together. How did Ringo manage to pass all the policemen with out getting arrested, whilst going slower than everyone else?
Plot hole: Turgidson's 'secretary' listens to the incoming telephone messages for only a second or two, and relays a much longer message than she could have heard during that time.