Immigration Detention: Your Rights in the UK

When Detention Can Happen

The Home Office can detain people in several circumstances:

• While making a decision on an immigration or asylum application
• To enforce removal from the UK (see our overstaying guide)
• If there is a risk the person will abscond
• On arrival at the UK border

The Home Office's adults at risk statutory guidance states the principles it applies: “there is a general presumption of liberty which is strengthened for those considered vulnerable under this guidance”, and, where detention is for removal or deportation, that “individuals can only be detained if there is a realistic prospect of removal within a reasonable timescale and if it is considered that the individual would not be likely to be removed without the use of detention”.

Contact the Home Office if you need information about a case.

Your Rights in Detention

If you are detained, you have important rights:

This section is deliberately short, because GOV.UK publishes less here than people expect. What follows is what it does say.

• A legal adviser. GOV.UK says “A solicitor or legal adviser can help you with a bail application” and links to its find legal advice service. It also links to its guide on representing yourself if you will not have a legal representative. See our entry on using an adviser.
• Getting the forms. If you cannot download form B1 yourself you can ask staff where you are held, or contact the tribunal on 0300 123 1711 or customer.service@justice.gov.uk. Form BAIL401 is available from the welfare officer if you are in an immigration removal centre, or in your detention paperwork pack if you are in a prison. Staff at the place you are held can fax a tribunal application to the right venue.
• Visits and contact. GOV.UK says you can visit someone in an immigration removal centre or short-term holding facility, and that you may be able to contact them by phone, email or video call. It says to check with the individual centre about visiting hours, whether an appointment is needed, what identification to bring, and what you can take in.
• Written reasons for a bail refusal. GOV.UK: “If you are refused bail, you'll get a written statement telling you why.”

Where GOV.UK is silent. Its public detention pages do not set out a general statement of detainees' rights — on healthcare, complaints, or contact — beyond the points above. Rather than fill that gap with plausible-sounding text, this entry says the information is not published there. The welfare officer at the centre and a legal adviser are the two people who can answer those questions for a specific centre and a specific case.

Applying for Bail

You can apply for immigration bail if the Home Office is holding you on immigration matters, whether you are in an immigration removal centre, a detention centre or a prison. There are two routes, and they differ in when they open and how they are decided:

• Secretary of State bail. Available from the first day you arrive in the UK. Form BAIL401. Decided by Home Office staff; there is no hearing.
• First-tier Tribunal bail. Available only if you arrived in the UK more than 8 days ago. Form B1. Decided by an independent judge at a hearing, usually a few days after the application is received; you get a notice of hearing telling you when.

If you are appealing to the Special Immigration Appeals Commission, you apply to them for bail instead.

Automatic Referral After 4 Months

GOV.UK: the Home Office will automatically refer you to the First-tier Tribunal for a bail hearing if all of the following are true — you have been in detention for 4 months or more; you are not being detained in the interests of national security; there is no action being taken to deport you from the UK; and you have not applied for bail to the First-tier Tribunal in the last 4 months. They apply on your behalf using the information they hold. You can refuse the referral, or make your own application instead. They will apply on your behalf every 4 months unless you apply yourself.

Conditions

Release on bail always carries at least one condition. GOV.UK lists: reporting regularly to an immigration official; attending an appointment or hearing; restrictions on where you can live; an electronic monitoring tag; restrictions on the work or studies you can do; a financial condition, where you or a supporter pledges money forfeited if other conditions are broken; and any other condition decided by the person granting bail. Conditions can be varied after release, on form B2 for tribunal bail.

Breaking a condition can mean tighter conditions, criminal charges, forfeiture of the pledged money, or return to detention.

What GOV.UK Says Affects the Outcome

“You're more likely to get bail if you have a place to stay”, and the application “is also more likely to succeed if you have at least one Financial Condition Supporter” — a person who will pay money if you do not follow the conditions and who can attend the hearing. GOV.UK also says you may find it harder to get bail if you have broken bail conditions in the past, or have a criminal record and there is a risk of reoffending.

Two further published limits. If you were refused bail in the last 28 days, you will not get another hearing unless your situation has changed significantly. And if your removal date falls within the 21 days after bail is granted, the Home Office has to agree to your release, so a grant of bail does not by itself mean release.

Challenging Unlawful Detention

Detention must be lawful, which means the Home Office must have a legal basis for detaining you and a realistic prospect of removing you within a reasonable time. If detention becomes unlawful, you can:

• Apply for judicial review to challenge the lawfulness of your detention.
• Claim compensation for unlawful detention through the courts. See our administrative review guide for other ways to challenge decisions.

The statutory guidance itself states the test in the same terms: detention for removal or deportation requires “a realistic prospect of removal within a reasonable timescale”, and detention “must only be for such period as, in the opinion of the Secretary of State, is reasonably necessary to enable the specific statutory purpose of the detention to be carried out”, citing section 12 of the Illegal Migration Act 2023.

Whether that test is met in a particular case, and what to do about it, is legal advice. This entry does not give it.

Vulnerable People in Detention

The Home Office has a policy known as "Adults at Risk" which recognises that certain people are particularly vulnerable in detention:

The indicators of risk listed in the guidance are:

• Suffering from a mental health condition or impairment, which may include more serious learning difficulties, psychiatric illness or clinical depression, depending on the nature and seriousness of the condition
• Having been a victim of torture, as defined in rule 35(6) of the Detention Centre Rules 2001
• Having been a victim of sexual or gender-based violence, including female genital mutilation
• Having been a victim of human trafficking or modern slavery
• Suffering from post-traumatic stress disorder
• Being pregnant — pregnant women are automatically regarded as meeting level 3 evidence
• Suffering from a serious physical disability
• Suffering from other serious physical health conditions or illnesses
• Being aged 70 or over
• Being a transgender or intersex person

The list is not exhaustive; the guidance says any other condition or experience that may render someone particularly vulnerable should be considered the same way.

The guidance sorts evidence into three levels — level 1 is a self-declaration, given limited weight in most cases; level 2 is professional or official documentary evidence; level 3 is professional evidence that a period of detention would be likely to cause harm, which is given significant weight. The higher the level, the higher the threshold in practice for detaining or keeping someone detained.

The guidance does not create an exemption. It says in terms: “there is no exemption from detention for any category of vulnerable person within this guidance”. A vulnerable person may be detained where the immigration factors outweigh the risk factors in their case. The one hard limit in the guidance is in a footnote: by virtue of the Immigration Act 2016, pregnant women may not be detained for longer than 72 hours, extendable up to a week in total with ministerial approval.

Getting Help

• The welfare officer at the centre. GOV.UK names them as the person who holds form BAIL401 in an immigration removal centre, and staff at the place you are held can fax a tribunal bail application to the right venue.
• The First-tier Tribunal (Immigration and Asylum Chamber). 0300 123 1711, or customer.service@justice.gov.uk, for the bail application form and the address of a hearing venue.
• A regulated immigration adviser. Immigration advice is a regulated activity, and the register kept by the Immigration Advice Authority — the regulator, renamed from the Office of the Immigration Services Commissioner on 16 January 2025 — is how you check that someone is regulated to give it. GOV.UK's find legal advice service also lists advisers.
• Your local MP can raise a case with the Home Office. See our MP help entry.

Charities working in this area, including Bail for Immigration Detainees, provide free advice and representation. This entry does not list contact details for them because it cannot verify them against a government source and a wrong number here would be worse than none.

For official information on immigration enforcement, see the GOV.UK immigration enforcement page.

Questions and answers