Additional data

Additional information on the safe, decent and secure running of the Prison Service.

Audits and inspections are reported on a 4-point scale, from 1 (lowest rating) to 4 (highest rating). HMIP inspections are up to date as of September 2017. Other measures have data for financial years up to March 2017, and where available, additional notes on the first half of 2017/18.

Visit prisons and probation statistics for data sources and more details.


Prison population

Average total number of prisoners per year.

A snaphot of the prison population at September 2017 is 85,997.

Prison population detail

YearPrison population
2016/1785,645
2015/1685,864
2014/1585,315
2013/1484,594
2012/1385,729
2011/1286,638
2010/1184,920
2009/1083,971
2008/0982,830
2007/0880,676
2006/0778,880
2005/0676,564
2004/0574,808
2003/0473,658
2002/0371,498
2001/0267,633
2000/0164,680
1999/0065,153
1998/9965,346
1997/9863,373
1996/9756,671
1995/9651,613

Crowding

Percentage of prisoners held in crowded accommodation.

Crowding detail

YearCrowding
2016/1724.5%
2015/1624.5%
2014/1525.5%
2013/1424.1%
2012/1323.9%
2011/1225.1%
2010/1124.2%
2009/1024.6%
2008/0925.3%
2007/0825.26%
2006/0724.64%
2005/0623.97%
2004/0524.35%
2003/0424.85%
2002/0323.33%
2001/0219.25%
2000/0118.21%
1999/0020.1%
1998/9920%

Releases in error

A prisoner is released in error if they are wrongly discharged from a prison or court when they should have remained in custody, where the prisoner has not deliberately played a part in the error (i.e. the prisoner had no intent of escaping).

Examples include misplaced warrants for imprisonment or remand, recall notices not acted upon, sentence miscalculation or discharging the wrong person on escort.

Releases in error detail

YearReleases in error
2016/1771
2015/1664
2014/1549
2013/1450
2012/1344
2011/1242
2010/1163
2009/1068
2008/0963
2007/0831
2006/0752

Staff in post

The chart shows Band 3-5 prison officer staff (full time equivalent) for public sector prisons at the end of each financial year. The detail view shows the financial year average for all staff.

At 30 September 2017 there were 19,210 FTE officers in post, representing increases of 1,207 (6.7%) compared to 30 September 2016 and 455 (2.4%) since 30 June 2017. This is the highest number of officers in post since 30 September 2013. Over the last year, 3,699 band 3 officers were appointed which represents an increase of 149.4% compared to the 12 months to 30 September 2016.

Staff in post detail

YearStaff in post
March 201718403 (FTE)
March 201618327 (FTE)
March 201518222 (FTE)
March 201418251 (FTE)
March 201321506 (FTE)
March 201222735 (FTE)
March 201124369 (FTE)
March 201024830 (FTE)

Staff sickness

Sickness absence (average working days lost per FTE staff) for public sector prisons. The summary totals also include headquarters.

For the 12 months to September 2017 there were an average of 9.4 working days lost to sickness for public sector prisons.

Staff sickness detail

YearStaff sickness
2016/1710.1103157801153 days
2015/1610.4027878675252 days
2014/1511.4160417650982 days
2013/1411.1180599456904 days
2012/1310.6414256486037 days
2011/1210.0021218251584 days
2010/1110.1068534051368 days
2009/1011.030449015964 days

Foreign national prisoner referrals

The percentage of foreign national prisoners that were referred to the Home Office within 10 days of each relevant sentencing.

Foreign national prisoner referrals detail

Foreign national prisoner referralsCount
Did not achieve target21
Achieved target49

Public prisons operating within budget

A measure of prison spend against agreed annual budget.

Public prisons operating within budget detail

Public prisons operating within budgetCount
Over budget9
Within budget94

Control & restraint staff training (C&R)

The percentage of staff adequently trained to deal with incidents in prisons.

Control & restraint staff training (C&R) detail

Control & restraint staff training (C&R)Count
Did not achieve target21
Achieved target96

Tornado commitment

The average number of staff adequetly trained to deal with more serious incidents in prisons.

Tornado commitment detail

Tornado commitmentCount
Did not achieve target21
Achieved target75
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