Witness testimony is a written or oral statement given by an individual who has experienced an incident. It is collected during criminal investigations (including through investigative interviews, facial composites and identity parades). However, inaccurate witness testimony (such as the incorrect identification of a suspect) can lead to innocent people being wrongfully convicted. Wrongfully accused or convicted individuals are at risk of discrimination, relationship damage and poor mental health. Wrongful convictions are also costly, with a miscarriage of justice costing up to £1 million in compensation, and cause reputational damage to the police and legal system. Furthermore, the real perpetrators are not caught and may continue to harm society by committing further crime.