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Prosecuting Homicide

Murder and manslaughter are two of the offences that constitute homicide.

Manslaughter can be committed in one of three ways:

  1. killing with the intent for murder but where there is provocation, diminished responsibility or a suicide pact.
  2. conduct that was grossly negligent given the risk of death, and resulted in death.
  3. conduct, taking the form of an unlawful act involving a danger of some harm, that caused death.

With some exceptions, the crime of murder is committed, where a person:

  • of sound mind and discretion (i.e. sane):
  • unlawfully kills (i.e. not self-defence or other justified killing)
  • any reasonable creature (human being)
  • in being (born alive and breathing through its own lungs)
  • under the Queen's Peace
  • with intent to kill or cause grievous bodily harm.

There are other specific homicide offences, for example, infanticide, causing death by dangerous driving, and corporate manslaughter.

Find out more about prosecuting homicide

Trevor Gibbon convicted for the murder of Alison Morrison


Trevor Gibbon, 48, was convicted today at the Central Criminal Court for the murder of Alison Morrison, 45. Ms Morrison was fatally stabbed shortly after she left her home on 18 December 2014.

Chief Crown Prosecutor for CPS London, Baljit Ubhey OBE, said: "This was a shocking attack on a defenceless woman as she walked from her home in Harrow last year.

"Alison Morrison was on her daily commute to work when her neighbour, Trevor Gibbon, ambushed her. He forced her to the ground, stabbing her repeatedly before he left her for dead. As she lay dying in the street Ms Morrison repeatedly told the strangers trying to help her that Trevor Gibbon was her attacker.

"When he was later arrested Trevor Gibbon described himself as a coward, but today he has been found to be a pre-meditated murderer.

"I hope that this conviction can bring some small comfort to Ms Morrison's family and friends, our thoughts are with them at this difficult time."


Notes to Editors

  1. For media enquiries call the CPS Press Office on 020 3357 0906; Out of Hours Pager 07699 781 926
  2. The CPS consists of 13 Areas in total, each headed by a Chief Crown Prosecutor (CCP). In addition, there are three national casework divisions: Specialist Fraud (formerly Central Fraud and Welfare, Rural & Health Divisions), Special Crime & Counter Terrorism and Organised Crime. CPS Direct is a 'virtual' 14th Area which provides charging decisions to all police forces and other investigators across England and Wales - it operates twenty-four hours, seven days a week, 365 days a year.
  3. At 31 March 2014 we employed a workforce of approximately 6237 staff (full time equivalent), including around 2226 prosecutors and 3629 caseworkers and administrators. Further information can be found on our website:
  4. The CPS, together with ACPO and media representatives, has developed a Protocol for the release of prosecution material to the media. This sets out the type of prosecution material that will normally be released, or considered for release, together with the factors we will take into account when considering requests. Read the Protocol for the release of prosecution material to the media.