"He then slipped into rail and fell."
"Police officer: Can you please tell me what has happened here?"
"The police raided the flat [of the person who was killed] in the early hours of the morning with a warrant to search for drugs. During the raid the deceased, who was naked and unarmed, was shot and killed by a police officer. The officer was subsequently acquitted of the deceased's murder. The claimants, the father and the son of the deceased, brought actions against the chief constable of the defendant police force for, inter alia, assault and battery, negligence and false imprisonment in respect of the planning and execution of the raid. The defendant admitted that it was liable in negligence and false imprisonment but resisted the assault and battery claim on the basis that the police officer had acted in self-defence in the mistaken belief that the deceased was armed and about to shoot. The judge gave summary judgment for the defendant in respect of the assault and battery claim, holding that the claimants bore the burden of proving that the police officer had not acted in self-defence. "
"In a civil law action the burden of proving self-defence was on the defendant; that, in civil proceedings, a defendant who mistakenly believed that it was necessary to act in self-defence must show that his mistaken belief was reasonably held and that the force he used was reasonable; that whether or not the mistake made and the force used were reasonable depended on all the circumstances of the case, which included the fact that action might have had to be taken in the heat of the moment; and that, in the circumstances, [there was a legitimate issue as to whether or not self-defence was made out and the summary judgment was set aside]."