Additional data

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

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


Prison level performance is monitored and measured using the Prison Performance Tool (PPT). The PPT uses a data-driven assessment of performance in each prison to derive overall prison performance ratings. As in previous years, data-driven ratings were ratified and subject to in depth scrutiny at the moderation process which took place in June 2019.

In the PPT, overall performance in each prison is rated on a 1 to 4 scale. The ratings are 4: Performance is exceptional; 3: Performance is acceptable; 2: Performance is of concern and 1: Performance is of serious concern. Note, this is a slight change from the rating definitions used in the Custodial Performance Tool in 2017/18. More information is available here.

Annual prison performance ratings detail

2018-19

Annual prison performance ratingsCount
4: Exceptional15
3: Acceptable59
2: Of concern28
1: Of serious concern16

Percentage of prisoners held in crowded accommodation.

YearCrowding
2018-1922.5%
2017-1824.2%
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%
2007-0825.3%
2006-0724.6%
2005-0624.0%
2004-0524.4%
2003-0424.9%
2002-0323.3%
2001-0219.3%
2000-0118.2%
1999-0020.1%
1998-9920.0%

Apr 2018 to Mar 2019 22.5%

Crowding detail


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.

YearReleases in error
2018-1962
2017-1866
2016-1772
2015-1664
2014-1549
2013-1450
2012-1344
2011-1242
2010-1163
2009-1068
2008-0963
2007-0831
2006-0752

Apr 2018 to Mar 2019 62

Releases in error detail


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.

YearStaff in post (prisons)
March 201922,630
March 201821,038
March 201718,403
March 201618,327
March 201518,222
March 201418,251
March 201321,506
March 201222,735
March 201124,369
March 201024,830

March 2019 22,630

For further context and commentary, please see the HMPPS Workforce Statistics Bulletin

Staff in post (prisons) detail


Sickness absence (average working days lost per FTE staff) for operational grade staff in public sector prisons.

YearStaff sickness (prisons)
2018-199.9 days
2017-189.7 days
2016-1710.8 days
2015-1611.1 days
2014-1512.1 days
2013-1411.9 days
2012-1311.2 days
2011-1210.7 days
2010-1110.5 days
2009-1011.6 days

Apr 2018 to Mar 2019 9.9

Staff sickness (prisons) detail


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

2018-19

Foreign national prisoner referralsCount
Achieved target3,900.0%
Did not achieve target3,400.0%

A measure of prison spend against agreed annual budget.

Public prisons operating within budget detail

2018-19

Public prisons operating within budgetCount
Within budget5,600.0%
Over budget4,700.0%

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

Young People prisons undertake minimising and managing physical restraint (MMPR) training. All other prisons undertake control and restraint (C&R) training.

Control & restraint staff training (C&R) detail

2018-19

Control & restraint staff training (C&R)Count
Achieved target9,200.0%
Did not achieve target2,600.0%

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

Tornado commitment detail

2018-19

Tornado commitmentCount
Achieved target7,100.0%
Did not achieve target2,100.0%

To help drive improvements in living conditions in prisons. Residential units, cells, communal areas including serveries, toilets and showers are observed.

The living conditions audit is carried out approximately annually. The data presented here shows the most recent assessment for each prison establishment.

Audit of living conditions detail

2018-19

Audit of living conditionsCount
Rating 41
Rating 34
Rating 22
Rating 10

A government internal audit which reviews financial and performance data processes.

Data integrity (governance and operational audit) detail

2018-19

Data integrity (governance and operational audit)Count
Rating 445
Rating 322
Rating 213
Rating 12

Whether any difference in survey results from white and BME prisoners is statistically significantly different (i.e. did not occur by chance).

The MQPL survey is undertaken as a part of a rolling three-year programme. The data presented here shows the most recent assessment for each prison establishment.

Measuring the quality of prison life – BME simplified detail

2018-19

Measuring the quality of prison life – BME simplifiedCount
No significant difference51
Significant difference49
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