Specialist legal advice for people detained under UK immigration powers, including detention reviews, vulnerable detainees, immigration bail, asylum claims in detention, removal action and challenges to unlawful or prolonged detention.
Being detained under immigration powers can be frightening and disorientating.
A person may be detained at an Immigration Removal Centre, a short-term holding facility, a prison following completion of a criminal sentence, or another authorised place of detention while the Home Office considers their immigration position or seeks to arrange removal.
Immigration detention is not the same as serving a criminal sentence.
The Home Office has statutory powers to detain in specified immigration circumstances, but those powers are subject to legal limits, published policy and continuing review.
Current Home Office detention guidance, updated on 15 June 2026, confirms an important starting principle: there is a presumption in favour of immigration bail, and alternatives to detention should be used wherever possible. Detention must be justified on the facts of the individual case.
At Knights & Shah Solicitors, we advise people who have been detained, their families and those facing a risk of detention.
We can assess:
Where somebody has recently been detained, early legal review can be particularly important.
The Home Office has immigration detention powers under several statutory provisions, including powers connected with examination, removal and deportation.
Current Home Office policy states that detention is most commonly considered where it is necessary:
However, the existence of a statutory detention power does not mean that detention should automatically be used.
The Home Office must consider the individual circumstances, alternatives to detention, immigration history and any factors indicating that detention would be inappropriate.
A detention decision should therefore be capable of answering two separate questions:
And:
Home Office policy expressly recognises a presumption in favour of immigration bail.
Current guidance requires decision-makers to consider all reasonable alternatives before detention is authorised. It also states that there must be strong grounds for believing that a person will not comply with immigration bail conditions where detention is justified on compliance grounds.
Possible alternatives can include immigration bail subject to conditions such as:
This principle can be important when challenging detention.
For example, if the Home Office’s concern is that the person may abscond, evidence of a settled address, close family relationships, previous compliance and willingness to accept reporting conditions may be relevant to whether detention remains necessary.
The reasons for detention vary considerably.
A person may be detained because:
In June 2026, the Home Office updated specific operational guidance dealing with detention during reporting events, confirming that detention at reporting remains governed by the general immigration detention powers, policy and safeguards.
A person detained after attending a routine reporting appointment should therefore obtain advice promptly about the reason for detention and what action the Home Office is proposing.
A detained person should be informed why they are being detained.
Current Home Office guidance provides that written reasons must be given at the beginning of detention using the relevant detention documentation.
For people held in Immigration Removal Centres, further written reasons for continued detention must then be provided at monthly intervals, meaning every 28 days.
Those reasons are important documents.
They may explain matters such as:
A solicitor reviewing detention should examine whether the stated reasons are current, factually accurate and supported by genuine progress in the immigration case.
Repeatedly using the same generic justification without properly addressing changed circumstances may require closer scrutiny.
There is no single general statutory maximum period applying to every adult immigration detainee.
That does not mean detention can continue indefinitely without justification.
Current Home Office guidance continues to reflect the principles associated with the Hardial Singh detention cases. Detention must be used for the statutory purpose for which the power exists, must continue only for a reasonable period in the circumstances, and should not continue where the relevant purpose cannot realistically be achieved within a reasonable period.
The legality of detention therefore depends upon the individual circumstances.
Relevant issues can include:
A lengthy detention is not automatically unlawful, but the justification for continued detention requires increasingly careful assessment as time passes.
Where detention is being maintained for the purpose of removal or deportation, one of the most important questions is whether there is a realistic prospect of removal within a reasonable period.
Current Home Office guidance expressly retains this requirement.
For example, legal questions may arise where:
The fact that the Home Office ultimately wishes to remove someone does not by itself answer whether detention should continue now.
The actual progress towards removal needs to be examined.
Immigration detention should be kept under review.
Current Home Office policy requires formally documented reviews of continued detention and consideration of whether the person remains removable and whether other information changes the justification for detention.
Reviews should consider relevant developments such as:
A detention review should be a genuine reconsideration of whether detention remains justified rather than simply confirmation of an earlier decision.
Vulnerability is a particularly important issue.
The Home Office’s Adults at Risk in Immigration Detention guidance was updated on 15 June 2026 and remains a central part of current detention policy.
The policy requires a case-by-case assessment where evidence indicates that detention may cause particular harm.
Indicators of vulnerability can include circumstances relating to:
The existence of vulnerability does not necessarily result in automatic release.
The Home Office weighs evidence of risk against immigration-control considerations.
However, the presumption of liberty is stronger where the person is recognised as being particularly vulnerable to harm in detention.
Health concerns arising in detention should be taken seriously.
Under the detention framework, Rule 35 of the Detention Centre Rules 2001 provides an important mechanism through which medical practitioners can report particular concerns to the Home Office.
Rule 35 issues can include circumstances where a detained person has health conditions that may be adversely affected by detention or where there are concerns relating to torture or vulnerability.
Current Home Office general detention guidance specifically requires consideration of Rule 35 reports as part of the detention-review framework.
Where a Rule 35 report is issued, the Home Office should respond and reconsider detention in light of the medical evidence.
Independent medical or medico-legal evidence can also become important, particularly in cases involving:
Detention may place particular pressure on people with serious mental health conditions.
Relevant evidence might include:
The Adults at Risk framework requires the Home Office to balance the evidence of vulnerability and likely harm against factors relied upon in favour of detention.
A detention case involving serious mental health difficulties should therefore address both the medical evidence and whether the immigration-control objectives could adequately be managed through bail.
People who have experienced torture or trafficking may be especially vulnerable in detention.
The Adults at Risk framework specifically recognises evidence relevant to torture, modern slavery and other experiences capable of increasing vulnerability.
These cases may involve:
If the Home Office already has credible evidence that a person is particularly vulnerable, the reasons said to justify continued detention should be examined carefully.
Pregnant women are subject to specific statutory restrictions.
Current Home Office guidance, updated in June 2026, states that a pregnant woman detained pending removal or deportation may normally be detained for a maximum of 72 hours.
That period can be extended to a total maximum of seven days, but the extension requires personal authorisation by a Minister. Detention should only be used where removal will take place shortly or exceptional circumstances justify detention, and the woman’s welfare must be taken into account.
Pregnancy should therefore be notified to the Home Office immediately where it is not already known.
Different safeguards apply where children are involved.
Current Home Office detention guidance requires particular consideration of the duty to safeguard and promote children’s welfare and recognises specific restrictions concerning families containing children under 18.
Current policy provides for families with minor children to be accommodated only in specified detention settings, including appropriate short-term facilities or pre-departure accommodation.
Where detention separates a parent from children remaining in the UK, the children’s circumstances may also be highly relevant to the detention decision.
Evidence concerning:
may therefore need to be presented urgently.
A detained person may be able to seek release through immigration bail.
There are two principal routes.
A person can ask the Home Secretary for immigration bail. Current GOV.UK guidance states that this can be requested from the beginning of immigration detention using the applicable Home Office process.
A person may apply to the First-tier Tribunal (Immigration and Asylum Chamber) for immigration bail once they have been in the UK for more than eight days.
The application is currently made using Form B1 and is considered by an independent Tribunal Judge at a bail hearing.
A carefully prepared bail application can be one of the quickest routes to obtaining release.
A bail application should address the reasons why the Home Office believes detention remains necessary.
Important evidence may include:
Current GOV.UK guidance states that having a suitable place to live can improve the prospects of bail. The availability of a Financial Condition Supporter can also strengthen the application.
A financial supporter is someone willing to promise payment if specified bail conditions are breached.
Not every bail application needs identical evidence. The case should be prepared around the particular reasons relied upon for detention.
Release on immigration bail normally comes with at least one condition.
Current rules allow conditions including:
Failure to comply can have serious consequences.
A person who breaches bail may face tighter conditions, financial consequences, criminal proceedings in relevant circumstances or re-detention.
Bail conditions can also be varied where circumstances change.
Current GOV.UK guidance provides that certain people who have been detained for four months or more may be automatically referred to the First-tier Tribunal for consideration of immigration bail, subject to the statutory exceptions.
An automatic referral should not necessarily be treated as a reason to wait four months before taking action.
Where grounds for release already exist, an ordinary bail application may be made much earlier.
A refused bail application does not necessarily mean the person must remain detained indefinitely.
However, current GOV.UK guidance states that where Tribunal bail has been refused within the previous 28 days, another hearing will ordinarily not take place unless there has been a significant change in circumstances.
Examples might include:
The previous bail refusal should therefore be reviewed carefully before making another application.
A person can claim asylum while detained.
The fact of detention does not remove the Home Office’s obligation to consider a protection claim lawfully.
Where asylum is claimed, important issues may include:
Current Home Office detention guidance confirms that the Detention Gatekeeper has responsibilities concerning continued detention or release where asylum is claimed from within detention.
An asylum claim should be prepared carefully even where the timetable is urgent.
Foreign national offenders may be detained under immigration powers following completion of a criminal sentence while deportation action is considered or pursued.
Detention after the criminal sentence is legally distinct from imprisonment under the criminal court’s sentence.
The Home Office must still justify continuing immigration detention.
Relevant matters may include:
A criminal conviction can make obtaining bail more difficult, particularly where the Home Office relies upon public-protection concerns, but it does not remove the requirement to assess detention individually.
Potentially.
Immigration detention may become legally challengeable where, for example:
These cases can potentially involve Judicial Review and, depending upon the circumstances, claims relating to unlawful detention.
The precise remedy depends upon what has gone wrong and whether the immediate objective is release, damages, or both.
Where detention may be unlawful, legal advice should be obtained urgently.
At Knights & Shah Solicitors, we advise individuals and families affected by immigration detention.
We can assist with:
Our approach is to identify why the Home Office says detention is necessary, what evidence undermines that justification and what practical steps can be taken to secure release.
If you require advice contact Knights & Shah Solicitors.
We provide clear, solicitor led advice, strategic case planning and robust court representation to protect our clients.
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