English criminal law

English criminal law concerns offences, their prevention and the consequences, in England and Wales. Criminal conduct is considered to be a wrong against the whole of a community, rather than just the private individuals affected. The state, in addition to certain international organisations, has responsibility for crime prevention, for bringing the culprits to justice, and for dealing with convicted offenders. The police, the criminal courts and prisons are all publicly funded services, though the main focus of criminal law concerns the role of the courts, how they apply criminal statutes and common law, and why some forms of behaviour are considered criminal. The fundamentals of a crime are a guilty act (or actus reus) and a guilty mental state (or mens rea). The traditional view is that moral culpability requires that a defendant should have recognised or intended that they were acting wrongly, although in modern regulation a large number of offences relating to road traffic, environmental damage, financial services and corporations, create strict liability that can be proven simply by the guilty act.

Defences exist to crimes. A person who is accused may in certain circumstances plead they are insane and did not understand what they were doing, that they were not in control of their bodies, they were intoxicated, mistaken about what they were doing, acted in self defence, acted under duress or out of necessity, or were provoked. These are issues to be raised at trial, for which there are detailed rules of evidence and procedure to be followed.