"Generally speaking, of course there is no lawful excuse for preventing a passenger from leaving a taxi when the passenger tells the driver she wishes to do so. If the passenger of a taxi says she wishes to leave the taxi, the taxi driver's duty is to stop and let her out as soon as he lawfully can. By 'as soon as he lawfully can' I mean that he does not have to stop in the middle of the road and obstruct it, or commit a traffic offence, but he is expected to stop and let the passenger off. The [appellant] says he honestly believed that Miss Ebrahimi was a thief. Even if he did, or may have done, he had no right to take Miss Ebrahimi back to the start of the journey, or to drop her at a place which he deemed would provide him with better protection against a complaint, or to drop her at a place which he deemed better lit. There are sometimes lawful excuses for preventing people from leaving a particular vehicle or place. The best known is making a lawful arrest. None of those lawful excuses apply here. The [appellant] was not making a lawful arrest."
"The fact that [the taxi driver] then drove off either to the police station, or somewhere else, locking the door, does not, in the view of the court, mean that when subsequently the appellant ran off from the taxi when it stopped he could not be making off without having paid, dishonestly intending to avoid payment."