‘Forensic science’ is a description of the application of any science to matters of legal interest, which Professor Jim Fraser of Strathclyde University views as ‘the investigation, explanation, and evaluation of events of legal relevance including the identity, origin, and life of humans, materials, substances, and artefacts. Much of the work of forensic practitioners is based on the principle described by Edmond Locard who was director of the crime laboratory in Lyon, France. The principles of establishing, managing and investigating a crime scene should be similar worldwide. The aim is to secure, identify and preserve evidence that may have value in a subsequent court setting. A crime scene is an entity which is created when police cordon off an area of interest in relation to an actual or a suspected offence. A zone is cordoned off, within which all people accessing or leaving are entered into a ‘scene log’.