Source · IMB Annual Report
Heathrow immigration removal centre
AI-generated report summary The IMB report for Heathrow IRC (2023) highlights increasing safety concerns, including a rise in self-harm (180 incidents), assaults (131 detainee-on-detainee, 54 on staff), and drug finds (104). The Board expresses significant concerns over the detention of mentally unfit individuals, the dilapidated infrastructure, and the misuse of segregation units. While health needs are generally met, staffing shortages and delayed Rule 35 responses remain problematic. The report also notes repeated concerns about prolonged detention times and the need for improved resettlement pathways for those on bail.
Year: 2023
Published: 15 Apr 2025
Type: IRC · Cat IRC
Recommendations: 22
Key concerns
Positive findings
Safety statistics
| Indicator | This year | Previous |
|---|---|---|
| Deaths in custody | 1 | — |
| Self-harm incidents | 180 | 150 |
| ACCT cases opened | 576 | 523 |
| Prisoner assaults | 131 | 60 |
| Assaults on staff | 54 | 23 |
| Use of force | 281 | 58 |
| Drug finds | 104 | 71 |
Positive findings
AI-generated summaryThe Board welcomed the advertising of facilities and competitions, and noted the expansion of food offerings in shops. Staff actively work to minimise violent incidents through de-escalation, mediation, and restorative justice. The Contractor's violence reduction policy is regularly reviewed and supported by an anti-bullying strategy. The Board commended the Contractor for a continual shift towards a centre more focused on individuals’ needs and sensitivities, evident in stress-reducing activities and flexible access to programmes.
Key concerns
The board has reached the consensus that the centre is less safe than previous years. There has been an increasing number of fights and assaults between detained people, an increasing number of assaults on staff and a number of frequent lock downs of individual wings. Increase in areas of concern are the number of throwovers, illicit drugs, vapes and phones. In 2023, 44 throwovers were recorded as compared to zero in 2022.
We remain concerned that people who are mentally unfit for detention are still assessed and approved by the Home Office Detention Gatekeeper for detention. The impact of Operation Safeguard wherein more Foreign National Offenders (FNOs) were held at the IRC on the conclusion of their sentence, increased the levels of violence and exposed custodial staff to a different set of challenges. The population of FNOs at the start of 2023 vs the end was 376 vs 109, the 376 representing 49.7% of the total population.
The IMB feels that failings of the detention engagement team (DET) to engage effectively may have contributed to feelings of frustration and powerlessness for some people detained at the Centre, potentially leading to incidents of self-harm.
4 The fairness and humanity in which detained people are treated is severely tested by the dilapidated nature of the infrastructure at the Centre. The Board notes, in particular, the frequency of loss of services (power, gas, water and communications) throughout the year.
The Board recognises the difficulties encountered in catering for a diverse population of detained people on a limited budget but remains concerned about the effect the variety, quantity and quality of the food on offer is having on the physical and mental well-being of those detained, as well as on the safety and security of the Centre. There is a strong request for more fresh vegetables and more salad.
7 The CSU was used 52 times in the year to facilitate removal directions, in some cases a number of days in advance of flights which were then cancelled. The Board note that the CSU was used to house detained people who refused, to share a room when the Centre was nowhere near full capacity.
We have been told repeatedly by detained people that there is no point making complaints regarding contracted services, because they will not be properly investigated. The statistics for 2023 noted that a total number of 242 complaints were made, 77% of which were unsubstantiated and 9% were partly substantiated. The number of official complaints relating to the Contractor that were ‘unsubstantiated’ would seem to lend some credibility to these concerns. The Board considers that this is an area which could benefit from greater arms-length investigation. In our view, complaints should not in the first instance be investigated by Contractor officers based in the Centre. We believe this would help to build trust in the system.
At times staff shortages and a lack of escorts meant that hospital appointments had to be cancelled, leading to a worse health outcome for the detained person. In one instance, a detained man who became unwell at 7pm was told nothing could be done to help him until the next day, he was finally taken to hospital the next day at 1pm. There were 210 urgent hospital appointments in 2023 and 400 non urgent referrals to hospital.
Too many detained people are held for unacceptably long periods without the prospect of imminent removal, including those held for over 200 days.
The Board repeats it’s concerns about the time taken to find suitable accommodation for those granted bail, particularly for time served foreign national offenders (TSFNO). The population of FNO’s is steadily growing. In 2023 the population at CB grew to over 44% and at HW the population grew to over 66%, levelling out to over 50% of the population by the end of the year. On top of the inconsistent communication between the Home Office, Probation Services and local authorities, the Board observed poor communication with the detained individuals themselves about their bail situation.
Significant increase in throwovers (44 in 2023 vs zero in 2022) containing drugs and contraband, indicating a breach in security.
Source wording under review
Lack of progress on crucial investment in infrastructure, especially heating and ventilation systems, despite previous recommendations and a delayed new contract.
Source wording under review
The Board has many concerns regarding the application of Detention Centre Rule 35. There is an issue surrounding adherence to Home Office deadlines for responding to Rule 35 reports. After accepting receipt, responses to Rule 35 reports should be provided by the Home Office within two working days, and the response must be copied to the detained person’s legal representative. All reports are reviewed, and the appropriateness of the individual’s detention considered. A responsible officer must take prompt action to release the individual, if appropriate. Many of the Rule 35 reports are not responded to within the timeline of two working days and as a result, many adults at risks remained detained when they should have been released. The IMB observed many people that remained detained for more than 100 days and were still waiting to be released. This is an unacceptable practice. Priority must be given to those identified as an Adult at Risk and timelines regarding Rule 35 adhered to.
The Board consider Rules 40 and 42 are being misused. There were several instances in 2023 where Rule 40 and 42 have been used for prolonged situations. It is imperative that Rules 40 and 42 are used for the shortest possible time and as a means of last resort. It should not be used to hold mentally ill detained people or for those who refuse to share a room. CSU is not the solution to these problems. An alternative mental health pathway needs to be established to care for people experiencing mental health problems in detention. The IMB have observed prolonged detention in CSU to increase anxiety and the poor mental health of detained people, many of whom are already suffering from trauma.
Recommendations
The Home Office has a duty of care for those with mental health problems and to ensure that they are safe in the community they are released into. Robust support is required for detained people with mental health people who are released on bail.
Recommendation 3
The Board has many concerns regarding the application of Detention Centre Rule 35. There is an issue surrounding adherence to Home Office deadlines for responding to Rule 35 reports. After accepting receipt, responses to Rule 35 reports should be provided by the Home Office within two working days, and the response must be copied to the detained person’s legal representative. All reports are reviewed, and the appropriateness of the individual’s detention considered. A responsible officer must take prompt action to release the individual, if appropriate. Many of the Rule 35 reports are not responded to within the timeline of two working days and as a result, many adults at risks remained detained when they should have been released. This is an unacceptable practice. Priority must be given to those identified as an Adult at Risk and timelines regarding Rule 35 adhered to.
Recommendation 3
The Board consider Rules 40 and 42 are being misused. There were several instances in 2023 where Rule 40 and 42 have been used for prolonged situations. It is imperative that Rules 40 and 42 are used for the shortest possible time and as a means of last resort. It should not be used to hold mentally ill detained people or for those who refuse to share a room. CSU is not the solution to these problems. An alternative mental health pathway needs to be established to care for people experiencing mental health problems in detention. The IMB have observed prolonged detention in CSU to increase anxiety and the poor mental health of detained people, many of whom are already suffering from trauma.
Recommendation 3
More work is required to consider different ways of dealing with those who have mental health problems. There should be an increase in external mental health beds for people in detention who display increased or increasing levels of mental health problems. A clear mental health pathway should be made available to those with mental health difficulties, the detention centre is not an appropriate place and more collaboration to work with the NHS to provide the necessary mental health services and pathways to deal with these complex medical needs.
Recommendation 3
Funding should be in place to increase the security at the IRC to prevent the increasing levels of throw overs on the Colnbrook Site of the Heathrow Estate.
Recommendation 3
Increase the work between the Home Office, the Ministry of Justice and HMPPS to enable additional resources and funding in prisons to enable a seamless process prior to TSFNOs being transferred to detention.
Recommendation 3
The Board is very concerned about the deterioration in the mental health of many detained people and too many detained people are resorting to self-harm. It is imperative that appropriate support, care, and mental health services are promptly provided to individuals grappling with mental health vulnerabilities.
Recommendation 3
There are many people detained at HIRC who have been identified as Adults at Risk (AAR) Level 3 and who have been in the detention centre for more than 80 days. These individuals should be released from Heathrow IRC as soon possible.
Recommendation 3
People with severe mental health problems should not be detained in the CSU for extended periods of time. Detained individuals with severe mental health issues should be treated in a mental health setting external to the Heathrow Detention Centre. The Home Office should reduce the use of CSU for those who do not wish to share a room with another person.
Recommendation 3
The increased number of TSFNOs detained at Heathrow IRCs has led to a change in the demographic’s population. This has led to increasing levels of assaults, verbal abuse, and racial abuse from detained people. It is important that a violence reduction policy is put in place to protect everyone in the Detention Centre.
Recommendation 3
The Home Office should improve the time scales for those that wish to return to their home country voluntarily. Any Delays to voluntary returns can acerbates anxiety and mental health issues for detained people.
Recommendation 3
The Home Office should improve communication with HMPPS to ensure that all the necessary immigration paperwork is correct and complete prior to arrival in immigration detention. This will help prevent any delays for their return and reduce the amount of time spent in Heathrow IRC. TSFNOs who wish to return voluntarily to their home country have experienced many delays because the wrong paperwork has been submitted, paperwork has been lost, or there have been delays in securing travel documents (ETD) and decisions relating to further criminal charges and missed flights. TSFNOs should only be transferred to the Heathrow Detention Centre if there are no barriers to return to enable a swift and seamless return to home countries.
Recommendation 3
The Home Office should strive to improve the communication between all the teams working within the Immigration centre/service, this includes the Probation Team, DET and the Courts.
Recommendation 3
The infrastructure at Heathrow IRC needs crucial investment, this includes heating, ventilation, electrical infrastructure, IT infrastructure and replacement of the core lift in Harmondsworth. It is very important to improve the living conditions of detained people. We urge the minister to fund improvement to the Heathrow IRC estate.
Response
The heating and ventilation systems are under review, with some works scheduled for implementation. However, it remains unclear whether the entire system will be replaced. Over the past year, the heating and ventilation system has been inconsistent, requiring decisive action to ensure reliable and effective operation. A dilapidation survey was carried out with a response due in June 2022. To date the IMB has not observed any action on this topic. The lift service continues to be erratic, and a complete overhaul would improve the access for vulnerable detained people.
Recommendation 3
The IMB would support broader use of the Colnbrook Care Suite for short term respite, particularly for detained people with deteriorating mental health conditions. We also urge the Contractor to replicate the Colnbrook Care Suite facility in Harmondsworth.
Response
Care and Custody and Healthcare are working collaboratively, with many healthcare initiatives introduced and supported by Care and Custody. While good care is provided to vulnerable people with mental health issues, prolonged detention has a detrimental impact, worsening their already fragile mental health. This issue is exacerbated by the critical shortage of mental health beds within the Hounslow community, requiring immediate attention and action. The Care Suite is already being used to its maximum capacity; in fact another Care Suite would be of benefit to the Harmondsworth site.
Recommendation 3
It is our view that improvements need to be made to the security of the Heathrow Estate. The contractor should work to reduce the number of throwovers and reduce the number of illicit drugs that enter Heathrow IRC. Addressing this issue should involve implementing stricter security protocol or enhancing surveillance and inspection procedures. The contractor should record/document the number of illicit drugs that enter the centre correctly, i.e. weighed, counted and documented.
Recommendation 3
The contractor should make every effort to reduce smoking in the units, as this could lead to fires. People in detention should be challenged about smoking inside the wings.
Recommendation 3
The contractor should offer meaningful activities during the day and evening to elevate levels of boredom. Practical activities would be welcomed that will enable people to gain meaning full/ Part-time employment when they reach their home countries or are released into the local community.
Recommendation 3
Ventilation systems within the Heathrow IRC needs a thorough overhaul as some wings are extremely hot or cold. There appears to be little that can be done to regulate the temperature.
Response
The heating and ventilation systems are under review, with some works scheduled for implementation. However, it remains unclear whether the entire system will be replaced. Over the past year, the heating and ventilation system has been inconsistent, requiring decisive action to ensure reliable and effective operation.
Recommendation 3
The Board found feedback from the healthcare team to the weekly questions and concerns set out in the IMB Rota visit report to be untimely and we encourage this to be improved.
Recommendation 3
Wait times for Rule 35 assessments vary and in some cases the wait time for an assessment is more than 14 days. This should be improved given the increasing number of people in detention that are considered an Adult at Risk.
Recommendation 3
The numbers of people experiencing mental health issues are increasing at Heathrow IRC. It is important that external mental health beds in the community are made available to detained people who present with a severe mental condition, that cannot be managed within Heathrow IRC.
Response
The IMB acknowledges that its 2022 recommendations were not adopted. However, the IMB firmly maintains that people with severe mental health conditions should not be held in the IRC. This practice must be reviewed to ensure people are placed in an environment that does not worsen their condition and which upholds humane standards. There is an urgent need for the HO to coordinate with Mental Healthcare in the borough of Hounslow to increase the number of mental health beds available. Currently only 2 mental health care beds are allocated to Heathrow IRC, which is inadequate with the number of emerging vulnerable detained people that are detained at the centre.
Other reports for Heathrow immigration removal centre
Population 1,448
· Self-harm 246
· Concerns