Public Figures

Britain’s official statistics

Prison population and capacity

Kirklevington Grange · August 2026

Kirklevington Grange prison is holding 179 people in the 187 certified places in use — 96% full.

Read from the Ministry of Justice’s August 2026 bulletin, in the vintage we archived on 11 October 2026. The count was taken on 24 August 2026.

96%

full

179 people in accommodation certified for 187, August 2026

That is the joint 80th-fullest of the 120 establishments in the August 2026 bulletin.

It is not holding more people than its certified places in use this month.

The fullest establishments in August 2026

  1. 1stLeeds167%
  2. 2ndDurham166%
  3. 3rdWandsworth164%
  4. 4thPreston159%
  5. 5thSwansea156%
  6. 6thExeter156%
  7. 7thDoncaster152%
  8. 8thAltcourse143%
  9. 9thCardiff140%
  10. 10thHull140%
  11. … 74 establishments between
    85thKirklevington Grange96%
  12. out of 120 establishments with accommodation in use

Population divided by in-use certified normal accommodation, for every establishment in the same bulletin. Establishments with no accommodation in use have no percentage and are left out of the ranking rather than placed at either end of it.

Every month we hold for Kirklevington Grange

Mar 201879%–110% across 102 readings on recordAug 2026

One cell per month from Mar 2018 to Aug 2026, shaded from this establishment’s own emptiest month to its fullest. The record starts in March 2018 because that is the first bulletin published as a spreadsheet; earlier months exist only as word-processor files we will not guess at.

The last twelve months

MonthPopulationIn-use CNAFull
Aug 202617918796%
Jul 202616718789%
Jun 202617718795%
May 2026200187107%
Apr 2026198187106%
Mar 2026201187107%
Feb 2026201187107%
Jan 2026200187107%
Dec 2025202187108%
Nov 2025200187107%
Oct 2025192187103%
Sep 2025201187107%

What the bulletin publishes, and what it means

Baseline CNA327
The sum total of all certified accommodation in an establishment, except normally cells in punishment or segregation units and healthcare cells not used for long-stay patients.
In-use CNA187
Baseline CNA less those places not available for immediate use — damaged cells, cells affected by building works.
Operational capacity187
The total number of prisoners an establishment can hold without serious risk to good order, security and the proper running of the planned regime. Determined by Prison Group Directors on the basis of operational judgement and experience.
Population179
The number of people held. The publisher notes that the prison unlock figure may be lower, as the population includes prisoners on authorised absence.

The publisher’s own definitions, quoted from the bulletin. We divide the population by in-use CNA rather than by operational capacity: operational capacity is what an establishment can be pushed to hold, in-use CNA is what it was certified to hold decently, and dividing by the larger of the two flatters every prison in the estate.