Harmondsworth, West Drayton, Middlesex

Colnbrook Immigration Removal Centre (IRC)

United Kingdom

Status

In use

2026

Type: Immigration detention centre (Administrative)

Custodial Authority: UK Visas and Immigration

Management: Mitie (Private For-Profit)

Detains: Adult men, Adult women, Asylum seekers (administrative), Undocumented migrants (administrative)

Capacity Reported population Conditions complaints?
330
327

31 December 2024

YES

2013

United Kingdom

20,604

Migration Detainee Entries

7,332

Detained Asylum Seekers

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FACILITY NAMES
Colnbrook Immigration Removal Centre (IRC)
Location

Country: United Kingdom

City & Region: Harmondsworth, West Drayton, Middlesex, Europe

Latitude, Longitude: 51.4826657425, -0.482711792

Contact Information
Colnbrook IRC Colnbrook Bypass Harmondsworth West Drayton Middlesex
UB7 0FX
UK
Tel: + 44 20 8607 5200
Fax: + 44 20 8759 7996

MANAGEMENT & BUDGET

Center Status
Status
Year
In use
2026
In use
2024
In use
2023
In use
2020
Last documented use
2016
Closed/ceased migrant detention
2014
In use
2013
Facility type
Category
Type
Year
Administrative
Immigration detention centre
2011
National typology
Official Typology
Year
Immigration Removal Centre (IRC)
2015
Management
Management
Type
Year
Mitie
Private For-Profit
2016
Serco Ltd
Private For-Profit
2013
Serco Ltd
Private For-Profit
2010
Custodial Authorities
Agency
Ministry
Ministry type
Year
UK Visas and Immigration
Home Office
Interior or Home Affairs
2011
Outsourced services and non-state actors
Provider
Service
Year
Practice Plus
Health care
2024
Central North West London NHS Foundation Trust
Health care
2016
Tascor
Detainee transport
2013
Serco Health
Health care
2013
Serco Ltd.
Management
2013
Serco Health
Health care
2010
G4S
Detainee transport
2010
Serco Out of Country Escorting
Detainee transport
2010
Operating Period
Year of entry
Year ceased
2004
2014

DETAINEES

Demographics

Adult men

2024

Adult women

2024

Adult women

2023

Adult men

2023

Adult men

2022

Adult women

2022

Adult men

2013

Adult women

2013
Categories of detainees

Asylum seekers (administrative)

2011

Undocumented migrants (administrative)

2011
Countries of Origin

Country #1 Albania

Country #2 Brazil

Country #3 India

Country #4 Poland

Country #5 Vietnam

2023

SIZE & POPULATION

Capacity (specialised migration-related facility)

Type Standard capacity

Capacity 330

2024

Type Standard capacity

Capacity 420

2023

Type Standard capacity

Capacity 420

2013

Type Standard capacity

Capacity 388

2010
Migration Detainee Entries

Number 1598

2023
Reported Single-Day Migration Detainee Population at Facility (day)
Number
Date
327
31 December 2024
294
30 September 2024
281
30 June 2024
315
31 March 2024
256
31 December 2023
264
30 September 2023
250
30 June 2023
194
31 March 2023
185
31 December 2022
267
30 September 2022
129
31 December 2021
81
31 December 2020
169
31 December 2019
199
31 December 2018
272
31 December 2017
312
31 December 2016
295
31 December 2015
320
31 December 2014
346
9 February 2013
280
1 April 2011
Number of men detained on single day
Number
Date
294
30 September 2024
281
30 June 2024
315
31 March 2024
256
31 December 2023
264
30 September 2023
250
30 June 2023
194
31 March 2023
267
30 September 2022
184
31 December 2022
194
31 March 2023
Number of women detained on single day
Number
Date
3
6 April 2023
1
31 December 2022

LENGTH OF DETENTION

Detention Timeframe (long, medium, short)

Length Long-term (more than 20 days)

2011
Average Days in Detention

Number of Days 52

2023

Number of Days 105

2011
Overstays

Reported Overstays Yes

2023

Reported Overstays Yes

2013

OUTCOMES

CONDITIONS

Inadequate conditions
Inadequate Conditions
Obvs. Date
2013
2013
2013
2013
2013
2013
2013
2010
2010
2010
2010
2010
2010
2010

CARCERAL INDICATORS

Carceral Environment

Carceral Environment Yes

2024

Carceral Environment Yes

2023
External Security Regime

Security Level Secure

2011

STAFF

SEGREGATION

Gender Segregation

Gender Segregation Yes

2013
Age Segregation

Age Segregation Not Applicable

2011
Legal Segregation

Legal Segregation Not Applicable

2011
Family Segregation

Family Segregation Not Applicable

2011

CELLS

COMMUNAL SPACE & ACTIVITIES

HEALTH

Medical Screening upon Arrival (within 48 hours)

Medical Screening upon Arrival (within 48 hours) Yes

2024
Nurse on Duty

Frequency Daily

2024
Reports of self-harming
Self harm reported
Incident/Report date
Yes
2 January

MONITORING & ACCESS

Monitors & Civil Society Access
Access?
Type of Institution
Year
Yes
International non-governmental groups
2013
Yes
Bar associations or similar
2013
Family Access

Family Access Yes

2013

TELECOMMUNICATIONS