The number of incidents where one or more persons are, unlawfully, held against their will by one or more individuals (either static or on the move), including hostage incidents where collusion was suspected or confirmed..
- Data is not always available for, or applicable to, every prison; and the list of prisons will vary year on year due to closures and newly opened establishments.
- Prison functions (Male Local etc.) refer to the function of the prison in the most recent year shown. The function of a prison may have been different in previous years.
- A small number of prisons which are listed separately in the above table are physically co-located and cannot be distinguished on the map.
- The markers on the map are indicative only. For further information on a prison, or for details of a prison's location, please consult the Ministry of Justice prison finder.