Prison register data

Data for an alpha prison register, a list of parts of the Prison Estate in England and Wales, including public and contracted prisons, NOMS Immigration Removal Centres operated on behalf of the Home Office and Secure Training Centre.

Data for register	Active count	Closed count	Total distinct prison count
prison	121	30	151

Address Data

address

What is a prison?

A prison in the data is an administrative prison. These are the prisons as reported in the prison annual performance ratings.

In some systems, for example NOMIS (an internal system in the National Offender Management Service), a prison is based on location.

A jointly-managed prison in the data for registers can be recorded as more than one prison in the NOMIS system. For example, here's register data and nomis data compared for two jointly-managed prison:

prison	name	nomis-codes	nomis-names
UK	HMP Usk and HMP/YOI Prescoed	UKI UPI	USK (HMP) PRESCOED (HMP & YOI)
GN	HMP Grendon/Spring Hill	GNI SPI	GRENDON (HMP) SPRING HILL (HMP)

Prison data

Here is an example of the fields in the prison data for registers:

Field	Value
prison	AC
name	HMP/YOI Altcourse
operator	company:02984969
address	38076557
start-date
change-date
end-date

Maps

Maps assist in the translation of existing codes and names to register records:

Map	Fields
contracted-out	Prison name from National Offender Management Service (NOMS) spend over £25,000 data
designation-to-name-affix	Prison designation to prefix and suffix used in prison name
hmi	HM Inspectorate of Prisons name for prison in inspection reports
nomis-code	NOMIS three letter code
prison-estate	Prison name from NOMS prisons and their resettlement providers list
prison-finder	Prison name from prison finder digital service
prison-map-prison	Prison name from prison map PDF on prison finder site

Lists

The data has been compiled from existing lists of prisons found in a number of different government datasets:

List	Source	Count
prison-estate	Prisons from National Offender Management Service (NOMS) prisons and their resettlement providers list	121
prison-map	Prisons from prison map PDF on prison finder site	123
prison-finder	Prisons from prison finder digital service	124
nomis-codes	Prison NOMIS establishment codes and names taken from the current production database on 16 Jan 2017	128
noms-codes	LIDS and NOMIS codes extracted from prison codes PDF file from custodian	153
legal-aid-agency	Prisons from Guidance for Reporting Crime Lower Work PDF published on gov.uk	141
prison-performance-stats-2016	Prison list from prison annual performance ratings 2015-2016 published on gov.uk.	118
prison-visits	Prisons scraped from Prison Visits booking digital service	110
contracted-out	Prison names and supplier names sourced from NOMS spend data files	14
former-prisons	Manually created from various sources - end dates found from various sources including HMI reports	30

Licence

The software in this project is covered by LICENSE file.

The data is © Crown copyright and available under the terms of the Open Government 3.0 licence.