A Judicial Review (JR) is a legal process in which a court examines the lawfulness of a decision made by a public body, such as the Home Office or an immigration tribunal. It is not a chance to re-argue the facts of your case, but to challenge how the decision was made — whether the decision-maker acted illegally, irrationally, unfairly, or breached procedural rules or human rights.
You would typically pursue JR:
- When there is no right of appeal or administrative review.
- When your case involves errors of law, procedural unfairness, or decisions that are irrational or beyond legal power (ultra vires).

When to Use Judicial Review
Remedy | What It Does | When Used |
Appeal | A tribunal reviews both the facts and the law. | When the decision letter gives you the right of appeal. |
Administrative Review | A review by the Home Office of case working errors on eligible decisions. | When the decision is eligible and you want a quicker, internal review. |
Judicial Review | The court reviews how a decision was made (lawfully, fairly). | If there is no appeal/AR right, or existing remedies have been exhausted. |
Grounds for Judicial Review
Here are common legal grounds on which JR can be based:
- Illegality – The decision-maker did not follow the law or exceeded their legal power.
- Irrationality (Wednesbury unreasonableness) – When a decision is so unreasonable that no reasonable decision-maker could have made it.
- Procedural unfairness (procedural impropriety) – For example, failure to give a fair hearing, failure to act in accordance with published guidance, or failure to consider relevant material.
- Human Rights Breach – If a decision breaches rights protected under the Human Rights Act 1998 (e.g. Article 8 – family/private life).
Time Limits & Deadlines
Situation | Time Limit |
From a Home Office decision without appeal rights | 3 months from the date of the decision. |
Urgent cases (e.g. removal directions, unlawful detention) | May require action even sooner, with the possibility of injunctive relief or emergency court orders. |
Pre-Action Protocol (Letter Before Claim)
Before formally issuing a Judicial Review claim, you are normally required to send a Pre-Action Protocol (PAP) letter to the Home Office:
- Explain which decision you are challenging and why (the legal grounds).
- Give them an opportunity to reconsider or withdraw the decision.
- If no satisfactory response is provided within the time specified (often 14 days), then you may proceed.
Process & What Happens in JR Proceedings
- Permission Stage – You must first seek permission to apply to JR. The court will check if your case has sufficient legal merit.
- Filing the Claim – Submit required forms, evidence of decision, legal grounds, etc.
- Full Hearing (if permission granted) – Oral or written arguments. Both sides (you and the Home Office) are present. Evaluate the lawfulness of the decision.
- Judgment – If successful, the decision may be quashed and sent back for reconsideration. The court does not usually substitute its own decision.
Possible Outcomes
- Decision is quashed (set aside) and the Home Office must reconsider correctly.
- Decision may be partially quashed (some parts need redone).
- Dismissal of the JR if grounds are insufficient or the case is “without merit.” Note: adverse cost orders are possible
Risks & Costs
- JR can be costly and time-consuming. Legal fees, court fees, and potential cost liability, especially if the case is unsuccessful.
- If your JR is “Totally Without Merit”, there can be cost penalties and other implications.
- There is no guarantee of winning — success depends on the strength of the legal argument, timing, quality of evidence and representation.
When JR is Your Best Option
You may consider bringing a Judicial Review when:
- There is no appeal, or your appeal rights have been exhausted.
- Administrative Review is not available or was unsuccessful.
- The decision involves clear legal or procedural errors.
- Urgent need (for example, facing removal imminently, unlawful detention).
Why Use Specialist Legal Help?
- JR is highly technical: correct grounds, correct procedures, strict deadlines.
- Lawyers help with drafting PAP letters, identifying errors of law, and preparing compelling arguments.
- Managing interaction with the courts, cost exposure, and evidential submissions.
- To increase the chance of success and avoid loss through minor procedural errors.
References
- https://www.gov.uk/guidance/apply-for-a-judicial-review-in-an-immigration-or-asylum-case
- https://www.gov.uk/government/publications/judicial-review-what-you-need-to-know-and-the-risk-of-making-an-application-which-is-totally-without-merit/judicial-review-what-you-need-to-know-and-the-risk-of-making-an-application-which-is-totally-without-merit