What happens after someone is arrested in the UK?

If you have ever watched a police drama on television, you might think an arrest leads straight into a dramatic courtroom scene within hours. In reality, the justice system in the United Kingdom follows a strict, highly regulated administrative procedure designed to protect both the investigation and the person who has been detained. I want to walk you through exactly what happens, step by step, when someone is arrested in England and Wales, along with the key differences you should know about if you are in Scotland.

The process begins at the scene of the arrest. A police officer must have lawful grounds to arrest someone, usually meaning they reasonably suspect that person of committing or being about to commit an offence. At the moment of arrest, the officer must tell the person why they are being arrested and give the standard caution. That is the familiar phrase explaining that they do not have to say anything, but that it may harm their defence if they fail to mention something they later rely on in court.

Once arrested, the individual is transported directly to a designated police station with a custody suite. They do not go straight into an interrogation room. Instead, they are brought before an independent custody officer, usually a sergeant, whose legal job is not to investigate the crime, but to ensure the detainee is safe, healthy, and treated according to the law under the Police and Criminal Evidence Act, often called PACE.

The custody officer explains the detainee's core statutory rights. In England and Wales, anyone arrested has three fundamental rights: the right to free, independent legal advice from a solicitor; the right to have someone told where they are; and the right to look at the police Codes of Practice. If the person is under 18 or considered vulnerable, an appropriate adult must also be called to support them before any questioning can take place.

After booking in, the police generally take fingerprints, a photograph, and a DNA swab from the inside of the cheek. Belongings are bagged and stored securely, and the detainee is placed in a secure cell while the investigating officers prepare their case. If the person is unwell, injured, or experiencing mental health distress, the custody officer must arrange for a healthcare professional to examine them.

There is a strict time limit on how long the police can hold someone without charge. In England and Wales, the standard limit is 24 hours from arrival at the station. A senior police officer can extend this to 36 hours for serious offences, and a magistrates' court can authorise further detention up to a maximum of 96 hours. For terrorism offences, separate legislation allows longer periods, but for ordinary criminal matters, the clock is strictly enforced.

When the police are ready, they conduct an interview under caution. The detainee has the right to have their solicitor sitting beside them in the room throughout. The entire interview is recorded on audio or video. The suspect can choose to answer questions, reply with "no comment", or hand in a prepared written statement on the advice of their lawyer.

It is worth noting that the law differs in Scotland. Scotland operates a separate legal system where detention and arrest have historically had distinct definitions. Under Scottish law, the standard initial detention limit is generally 12 hours (extendable to 24), and decisions about whether to prosecute are ultimately made by an independent public prosecutor known as the Procurator Fiscal, rather than the Crown Prosecution Service.

Once the interview is complete and evidence gathered, the police must decide what to do. For minor offences, the police can make a charging decision themselves. For more serious or complex allegations, the evidence is sent to the Crown Prosecution Service (CPS) in England and Wales, where a lawyer applies two tests: is there enough evidence for a realistic prospect of conviction, and is a prosecution in the public interest?

If there is not enough evidence, the person is released with no further action. If further inquiries are needed, they may be released under investigation (RUI) or released on pre-charge bail, which may come with conditions such as not contacting witnesses or staying away from a particular area. If charged with an offence, the person will either be granted bail to appear at a magistrates' court on a specific date, or held in custody to be brought before the next available court sitting.

The legal machinery following an arrest is designed to balance the gathering of evidence with strict safeguards for individual rights. I hope this gives you a clear picture of how the process works behind the station doors. For everyday explainers and straightforward reporting on how British institutions run, make sure to explore the rest of our coverage here at Steve Rowland News.