What to Do If You Witness a Crime in the UK
Last updated: 3 August 2025
Step 1: Prioritise Your Safety
Before doing anything else, make sure you're safe. If the crime is still happening, avoid intervening directly—especially if there's a risk of violence. Move to a secure location and avoid confrontation. Your safety should come first.
Step 2: Call 999 If It’s an Emergency
If someone is in danger, the crime is still in progress, or the offender is nearby, call 999 immediately. Try to provide the operator with as much information as possible: your location, what’s happening, a description of those involved, and any weapons or vehicles seen.
Step 3: Report Non-Emergencies to 101
If the crime has already happened and there’s no immediate threat, you can call 101 or report it online via your local police website. You’ll be asked to describe what you saw, when it happened, and whether you have any supporting evidence like photos or video.
Step 4: Make a Statement
Police may ask you to make a witness statement. This could happen at the scene or later at a police station. You’ll be asked to describe exactly what you saw, heard, and remember. Be honest and include as much detail as you can. If you’re not sure about something, say so.
Step 5: Cooperate With the Investigation
Witnesses play a vital role in criminal investigations. The police might contact you later to clarify your statement, or ask you to attend a witness identification process (such as a video parade). While it's voluntary, helping the police could be crucial in securing justice.
Will I Have to Go to Court?
If the case goes to court, you may be asked to give evidence as a witness. You’ll receive a formal witness summons and support from the Witness Service. You can request special measures, such as giving evidence behind a screen or by video link, especially if you feel vulnerable or at risk.
Can I Stay Anonymous?
In most cases, witnesses are identified in court. However, if you fear retaliation or intimidation, the police can ask the court for special measures, such as anonymity or protection orders. Speak openly with the officer handling your case if you have concerns about your safety.
Support for Witnesses
Giving evidence or witnessing a traumatic event can affect your wellbeing. Free support is available through the Witness Service, Victim Support, and other charities. They can help you prepare for court, offer emotional support, and explain your rights.
Tips for Being a Good Witness
- Write down what you saw as soon as possible — details fade quickly.
- Include times, descriptions, and anything unusual.
- Don’t discuss the event on social media or with others before speaking to police.
- Remain calm and cooperative when giving your statement.
- Let police know if you're unsure about any details — never guess.
What If I Don’t Want to Get Involved?
You’re not legally required to report a crime unless you’re involved or summoned to court. However, reporting what you saw can help prevent further harm and bring justice to those affected. You can also report anonymously through Crimestoppers if you’re uncomfortable sharing your identity.
Crimestoppers: Report Crime Anonymously