In English criminal law, attempted murder is the crime of more than merely preparing to commit unlawful homicide and at the same time having a specific intention to cause the death of human being under the Queen's Peace. The phrase "more than merely preparatory" is specified by the Criminal Attempts Act 1981 to denote the fact that preparation for a crime by itself does not constitute an "attempted crime."

Today

In England and Wales, as an "attempt", attempted murder is an offence under section 1(1) of the Criminal Attempts Act 1981 and is an indictable offense which carries a maximum penalty of life imprisonment (the same as the mandatory sentence for murder). The corresponding legislation for Northern Ireland is section 3(1) of the Criminal Attempts and Conspiracy (Northern Ireland) Order 1983 (No.1120 (N.I.13)).

The mens rea (Latin for the "guilty mind") for murder includes an intention to kill or cause grievous bodily harm where there is a high probability of death resulting, whereas attempted murder depends on an intention to kill, and an overt act towards the homicide. Attempted murder is only the planning of a murder and acts taken towards it, not the actual killing, which is the murder. This makes the offense difficult to prove and it is more common for a lesser charge to be preferred under the Offences Against The Person Act 1861.

However, in R v Morrison 1 1 WLR1859, the Court of Appeal considered the issue of alternative verdicts on an indictment with a single count of attempted murder. Morrison had gone into a shop with two other men on a robbery with a firearm. They demanded money and one of the men shot at the shopkeeper who suffered only minor injury. The prosecution had many opportunities to add other counts before the trial but failed to act. Having heard the case, the judge expressed his view that the jury could consider an attempted grievous bodily harm (GBH) under section 18 of the 1861 Act and Morrison was duly convicted of attempting to cause grievous bodily harm. The Court of Appeal confirmed that attempting to cause grievous bodily harm is a valid alternative to attempted murder because there can be no intention to kill someone without the intention also to cause grievous bodily harm.

This is a practical decision to ensure that the criminal justice system did not allow a guilty person to walk away because only one charge had been preferred. But it is not necessarily a good general principle because, in euthanasia for example, a person assisting intends to cause death, but with no suffering. That attempting to cause grievous bodily harm must be an alternative verdict should the intended "victim" not die would be a strange outcome because there is no intention to cause any long-lasting and serious injury: the two attempted offenses have different mens rea requirements so that proof of intent to murder would not necessarily meet the requirement for section 18 of the 1861 Act.