A report into the retention of human tissue following suspicious death or homicide investigations by police forces in England, Wales and Northern Ireland shows there were 492 samples of human tissue held by, or on behalf of police in police premises, hospital mortuaries or other establishments, according to a report by the Association of Chief Police Officers (ACPO). The audit was coordinated by the ACPO lead for forensic pathology, Deputy Chief Constable Debbie Simpson (pictured).