Speaker Identification is carried out by a combination of auditory and acoustic methods (and, where appropriate, some text analysis methods) and provides an opinion as to whether a particular voice, for example recorded making a telephone call, or participating in a conversation recorded by a recording device, is that of a particular known person.

Speaker Identification may be requested for a number of different criminal offences, such as making hoax 999 calls to the police, ambulance or fire brigade, making threatening or harassing telephone calls, blackmail or extortion demands, or taking part in criminal conspiracies such as those involving the importation, trafficking or manufacture of illegal drugs.

Speaker Identification may also be required in civil cases or for the media. These cases include calls to radio stations, local or other government authorities, insurance companies, or recorded conversations, rallies or meetings. We have also been instructed in personal or family matters where identification is sought, but without police involvement.