What is ViSOR?
ViSOR is the Dangerous Persons Database , it is used as a Management Tool by UK Law Enforcement, National Offender Management Service (including the Prison Service) along with a wide range of other agencies, to manage, Registerable Sexual Offenders, Other Sexual Offenders, Violent Offenders, Registerable Terrorist Offenders, Dangerous Offenders, Violent Offenders and Potentially Dangerous