Prisons: Staff
The question
To ask the Secretary of State for Justice, what the average number of (a) prisoners held and (b) staff employed by HM Prison Service was in each of the last eight years.
Answered by Jake Richards
Detailed statistics on the number of offenders in custody are published quarterly, including for the last eight years, and are available here: Offender management statistics quarterly - GOV.UK. The average annual population can be found in Table 1_A_3 of the Annual Prison Population tables, published each July, and the June 30 snapshot population (typically used to represent the population in a particular calendar year) can be found in table 1_A_1.
The quarterly HM Prison and Probation Service (HMPPS) workforce statistics includes headcount and Full Time Equivalent figures, as well as annual average staff in post figures for HMPPS staff. The latest data in the quarterly HMPPS workforce statistics covers the period up to the end of June 2025, and figures back to 2010 are available here: HM Prison and Probation Service workforce statistics - GOV.UK.
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