Introduction
Being arrested by the police can be an extremely stressful experience. Many people are unsure what their legal rights are or what will happen once they are taken into custody.
Understanding your rights if arrested in the UK is essential. The law places strict limits on police powers and provides important protections for anyone detained by officers.
These rights exist to ensure that investigations are conducted fairly and that individuals are treated lawfully throughout the criminal justice process.
This guide explains what happens when someone is arrested, what rights you have in police custody, and why obtaining legal representation as early as possible is crucial.
When Can the Police Arrest Someone?
Police officers cannot arrest someone arbitrarily. They must have reasonable grounds to suspect that a person is involved in a criminal offence.
Additionally, the arrest must be necessary. This means the officer must believe the arrest is required for reasons such as:
- preventing injury or harm
- preventing damage to property
- allowing prompt and effective investigation
- preventing the suspect from disappearing
These powers are set out under Section 24 of the Police and Criminal Evidence Act 1984.
What Must the Police Tell You When Arresting You?
When making an arrest, officers must follow specific legal requirements.
They must clearly inform you that:
- You are under arrest
- The reason for the arrest
- The legal basis for their action
Officers usually state the well-known caution:
“You do not have to say anything, but it may harm your defence if you do not mention when questioned something which you later rely on in court.”
This caution is designed to ensure you understand your right to remain silent and the possible consequences of withholding information during questioning.
Failure to follow these procedures can potentially affect whether evidence obtained later is admissible in court.

Your Legal Rights in Police Custody
Once a person is taken to a police station, they will be placed in custody and processed by a custody officer.
The custody officer is responsible for ensuring the arrest and detention are lawful.
Several rights apply immediately once you are in custody.
The Right to Legal Advice
One of the most important rights after arrest is the right to legal representation.
You are entitled to consult a solicitor before any police interview takes place. A solicitor can:
- explain the allegations
- advise whether to answer questions
- ensure procedures are followed correctly
- protect your legal interests during questioning
Police cannot normally interview you until you have had the opportunity to speak with a solicitor.
The Right to Remain Silent
You are not required to answer police questions.
However, the caution given during arrest means that remaining silent can sometimes allow the court to draw adverse inferences if you later rely on facts not mentioned during interview.
Because of this, legal advice before answering questions is extremely important
The Right to Medical Assistance
Anyone in police custody who requires medical attention has the right to receive it.
A healthcare professional can be called to assess medical conditions or injuries.
This ensures detainees are not placed at risk while in custody.
The Right to Inform Someone of Your Arrest
You also have the right to have someone informed of your arrest.
This may be a:
- friend
- family member
- employer
The purpose of this right is to ensure that people are not detained without their whereabouts being known.
How Long Can Police Detain You After Arrest?
Police cannot detain someone indefinitely without charge.
In most cases, the maximum detention period without charge is:
24 hours
However, this can be extended under certain circumstances:
- up to 36 hours for serious offences with senior authorisation
- up to 96 hours with court approval for indictable offences
Strict legal safeguards apply to ensure detention is justified and regularly reviewed.
What Happens During a Police Interview?
A police interview is a formal process used to gather evidence.
Interviews are usually:
- audio recorded
- conducted under caution
- carried out by investigating officers
During the interview, officers will ask questions about the alleged offence.
Your solicitor may:
- advise you how to respond
- request clarification of questions
- intervene if procedures are not followed correctly
Legal advice during this stage can significantly influence the outcome of an investigation.
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Why Legal Advice Is Crucial After an Arrest
The early stages of a criminal investigation are often the most important.
Statements made during police interviews can form a central part of the prosecution case.
An experienced criminal defence solicitor can:
- assess the strength of the evidence
- ensure procedures are lawful
- advise on interview strategy
- protect your legal rights
Early legal advice can have a significant impact on how a case develops.
Speak to a Criminal Defence Solicitor
If you or someone close to you has been arrested or is under investigation, obtaining professional legal advice is essential.
A criminal defence solicitor can provide clear guidance, protect your rights during questioning, and ensure that police procedures are properly followed.
Prompt legal advice can make a significant difference to the outcome of a case.
If you require assistance following an arrest or police investigation, contact our criminal defence team for confidential legal advice.
5 Key Takeaways
If you are arrested in the UK, you are protected by several important legal rights, including:
- The police must inform you that you are under arrest and explain the reason.
- You have the right to speak with a solicitor before being interviewed.
- You have the right to remain silent during police questioning.
- You have the right to inform someone that you have been arrested.
- You must be treated fairly and detained only for lawful purposes.
These rights arise primarily under the Police and Criminal Evidence Act 1984 (PACE), which governs how police investigations must be conducted.
Frequently Asked Questions
You have the right to be informed of the reason for your arrest, to consult a solicitor, to remain silent during questioning, and to have someone informed of your detention.
Police must have reasonable grounds to suspect involvement in an offence before making an arrest.
In most cases police can detain someone for up to 24 hours without charge, although this can be extended in certain serious investigations.
Yes. Anyone arrested has the right to consult a solicitor before being interviewed by the police.
After arrest, you will usually be taken to a police station where a custody officer reviews the arrest and decides whether detention is lawful.
Yes. You have the right to remain silent, although remaining silent may have legal implications in certain circumstances.
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