An arrest can happen on the street, at home, at work or after someone attends voluntarily. What follows is a regulated process with recorded decisions, time limits and legal safeguards.
This guide explains the police arrest procedure UK readers most often encounter, focusing on England and Wales under the Police and Criminal Evidence Act 1984. Scotland and Northern Ireland use separate frameworks, outlined later.
Step 1: The officer explains the arrest
In England and Wales, an officer generally needs reasonable grounds to suspect involvement in an offence and must consider arrest necessary. Reasons include confirming identity, preventing harm or allowing a prompt and effective investigation.
The officer should identify themselves, say that the person is under arrest, explain the suspected offence and why arrest is necessary, and make clear that the person cannot leave. The person will normally be cautioned. Ask for any unclear explanation to be repeated.
Step 2: Search, restraint and transport
Police may search an arrested person for items connected with escape, injury or evidence. Handcuffs are not automatic, but officers may use reasonable force when necessary and proportionate. Physically resisting can create further risk or allegations.
The person is usually taken to a police station as soon as practicable. A sensible response is to remain calm, give basic identifying information and ask to speak to a solicitor before discussing the allegation in detail.
Step 3: Booking into police custody
At the station, a custody officer decides whether detention should be authorised. This officer is responsible for the detainee’s welfare and must consider whether lawful grounds exist to keep them. Being arrested by police does not automatically mean detention must continue.
A custody record is opened for the arrest details, property, health concerns and risks. The detainee is normally searched, and belongings may be stored. The custody officer should ask about medication, injuries, mental health, communication needs and urgent medical problems.
Step 4: Rights are explained
The arrest rights UK rules provide important safeguards. In England and Wales, a detainee has the right to free legal advice, to have someone informed, to receive medical help, to consult the Codes of Practice and to receive a written notice of custody rights.
An interpreter should be arranged where necessary. The detainee can request the duty solicitor or their own solicitor. Police-station advice is free and independent, and someone who initially refuses it can change their mind.
For example, someone arrested after a dispute may worry that requesting a solicitor makes them look guilty. It does not. A solicitor can explain the evidence disclosed by police and advise whether to answer questions, provide a prepared statement or make no comment.
Step 5: Identification, samples and searches
During the police custody process, officers may take fingerprints, photographs and DNA samples where the law permits. They may also arrange identification procedures or request other samples. The rules depend on the type of sample, the suspected offence and whether consent or further authority is needed.
A strip search is not routine after every arrest. It requires justification and must follow specific safeguards. Intimate searches are more restricted. Anyone unsure why a search or sample is requested should ask for the reason and seek legal advice.
Step 6: Detention is reviewed and time-limited
In an ordinary case in England and Wales, detention before charge is normally limited to 24 hours. For an indictable offence, a superintendent or higher-ranking officer may authorise detention up to 36 hours. Magistrates can authorise further detention, taking the maximum to 96 hours in qualifying serious cases.
Separate terrorism legislation permits detention without charge for up to 14 days. During ordinary custody, senior officers must review detention at required intervals. If continued detention is no longer necessary, the person should be released.
Step 7: The recorded police interview
A suspect interview is normally recorded and begins with the caution. A detainee does not have to answer questions, but silence can sometimes affect a later defence if a fact relied on in court was not mentioned when questioned. Legal advice is therefore safer than choosing an interview strategy alone.
Once legal advice has been requested, questioning will usually wait until it has been provided, subject to limited exceptions. A solicitor may attend, challenge improper questions and request breaks. Interviews should also account for health, fatigue, meals and reasonable rest.
Children and vulnerable adults require an appropriate adult to support communication, understanding and welfare. The appropriate adult is not a replacement for a solicitor and should not answer questions for the detainee.
Step 8: Charge, bail, investigation or release
At the end of detention, police may release the person with no further action, release them under investigation, grant pre-charge bail or charge them. Release under investigation generally carries no bail conditions, although the investigation continues. Pre-charge bail may require a return to the station and can include conditions.
If charged, the person receives details of the alleged offence. They may be released on bail to attend court or kept in custody for the next available hearing, depending on the legal grounds and risks. A charge is an accusation, not a conviction.
How Scotland and Northern Ireland differ
Scotland has its own criminal procedure. A suspect can generally be held without charge for up to 12 hours, with a possible extension to a maximum of 24 hours authorised by a senior officer. Scotland also uses different terminology and release arrangements, including investigative liberation.
Northern Ireland operates under the Police and Criminal Evidence (Northern Ireland) Order 1989 and revised PACE Codes that came into operation in July 2026. They broadly mirror many England and Wales safeguards but remain part of a separate legal system. Anyone arrested there should obtain Northern Ireland-specific advice.
Useful related topics include police interview rights, pre-charge bail conditions and how to complain about police conduct.
Frequently asked questions
Do police need a warrant to arrest someone?
Not always. Police can arrest without a warrant when the statutory suspicion and necessity tests are met. Warrants are used in some cases but are not required for every arrest.
Can I call someone from the police station?
You have the right to have someone informed of your arrest. This does not always mean an unrestricted personal call, and notification can be delayed in limited circumstances authorised by the rules.
Is legal advice at the police station free?
Yes. Advice from the duty solicitor, or police-station advice arranged through the relevant scheme, is free and independent regardless of income.
Does an arrest create a criminal record?
An arrest is not the same as a charge or conviction. Police may retain records and biometric information under specific rules, but the consequences depend on what happens next and the applicable retention law.
Know the process and use your rights
The key points are simple: listen to the stated reason for arrest, do not physically resist, disclose urgent health needs and request free legal advice before deciding how to handle an interview. The custody officer must record and review detention, while the investigation must progress within legal limits. Because procedure varies across the UK, location matters whenever you check your rights or seek advice.