Prisoner on prisoner assaults per 1,000 prisoners

Assaults in prison custody cover a wide range of violent incidents including fights between prisoners.

From time to time, events in prison custody and developments within and outside the Ministry of Justice have changed the safety in prisons is viewed and managed. Some have resulted in changes to the way offenders are managed, others have affected the way statistics are collected and reported.

The data source is for the summary is safety in custody statistics (quarterly), and the data source is for the details below is prison performance ratings (annual).