This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
An authoritative legal guide to witness intimidation in England and Wales, covering the offence under section 51 of the Criminal Justice and Public Order Act 1994, examples of intimidating conduct, legal penalties, rights and protections for witnesses, support services, and practical steps if you are affected.
Witness intimidation refers to behaviour intended to influence, coerce, deter or harm a person because they are giving evidence, have given evidence, are likely to be a witness, or are assisting with an investigation or legal process. It is a serious criminal issue that strikes at the heart of the justice system by attempting to undermine fair trials and proper investigations. This guide explains what witness intimidation is under the law in England and Wales, how it is prosecuted, the legal protections in place for witnesses, what consequences individuals face, and practical considerations if you are involved in or affected by intimidation.
What Is Witness Intimidation?
In the legal context, witness intimidation occurs when someone threatens, pressures, coerces or harms a witness - or a potential witness - with the aim of influencing their testimony, causing them to withdraw evidence, give false evidence, avoid reporting information to police, or otherwise interfere with the administration of justice.
This behaviour might involve:
- Verbal threats or aggressive communication;
- Violence or threats of violence aimed at the witness, their family or friends;
- Damaging or threatening to damage property associated with the witness to induce fear or influence behaviour;
- Pressure to withdraw allegations or change statements;
- Use of financial pressure or bribes to avoid giving evidence.
Witness intimidation can occur before, during or after legal proceedings - including investigations by police, criminal trials, civil hearings or tribunal matters - and is treated as a criminal offence because it disrupts the proper functioning of the justice system.
Legal Framework in England and Wales
Criminal Justice and Public Order Act 1994
The principal statutory basis for prosecuting witness intimidation is section 51 of the Criminal Justice and Public Order Act 1994. This provision makes it an offence to:
- Intimidate a person who is assisting in the investigation of a criminal offence, is a witness or potential witness, or a juror or potential juror,
- Where the act is intended to obstruct, pervert or interfere with the course of justice, and
- The offender knows or believes that the person is or can be a witness or participant in ongoing proceedings.
There are also provisions to protect individuals after proceedings have concluded, such as acts of harassment, threats or harm directed at people who have previously assisted with an investigation or given evidence.
Intimidation offences apply in the context of criminal investigations and trials, safeguarding those involved in public justice processes from interference that would undermine the integrity of the system.
Related Offences and Common Law
Beyond section 51, other aspects of the law criminalise interference with witnesses:
- Perverting the course of justice at common law can encompass conduct that improperly influences a witness, including bribery, threats or tampering with evidence.
- Behaviour that amounts to witness intimidation in certain contexts may also constitute contempt of court if it interferes with active court proceedings.
Who Can Be Protected?
The statutory offence applies to:
- Witnesses and potential witnesses in criminal matters;
- People assisting investigations, including police or professional experts;
- Jurors and potential jurors;
- In some cases, individuals connected to civil proceedings under parallel statutory provisions modelled on section 51.
The law recognises that intimidation not only affects the direct witness themselves but may extend to family members, friends, or others if the intimidation is linked to the witness's role in the justice process.
Examples of Witness Intimidation
Behaviour that may amount to witness intimidation includes:
- Direct threats not to give evidence or to give evidence favourable to a defendant;
- Threatening property or loved ones to influence a witness's testimony;
- Repeated harassment of a witness near a court venue or their home to induce fear;
- Damaging property or business interests of someone expected to be a witness.
The intent behind the conduct is key: the offender must intend to affect the witness's actions and thereby interfere with the investigation or judicial process.
Penalties and Sentencing
Witness intimidation offences are serious indictable matters. Sentencing is guided by the Sentencing Council's guidelines for witness intimidation offences, reflecting the importance of these offences to the administration of justice.
Penalties may include:
- Immediate custody (prison sentences) for more serious or aggravated cases;
- Suspended sentence orders or community orders for lower‑level cases;
- Fines in cases where custodial sentences are not appropriate.
The exact sentence depends on factors such as the severity of the intimidation, harm caused to the witness, whether violence was used or threatened, and the impact on proceedings.
Witness Rights and Protections
Reporting to Police
If you feel intimidated as a witness, it is important to report the behaviour to the police. Police have powers to investigate intimidation, protect witnesses and, where necessary, arrest and charge suspects.
Witness Services and Support
Support services such as the Witness Service provide confidential help, guidance and practical measures to make attending court safer and less stressful. They can assist with arrangements like separate entrances, waiting areas, or adjusted times to avoid contact with intimidating individuals.
Special Measures in Court
Under the Youth Justice and Criminal Evidence Act 1999, witnesses who are vulnerable or intimidated may qualify for special measures to give evidence. These measures can include screens, giving evidence via live link, or other provisions to reduce fear and maximise the quality of evidence.
Witness Protection and Anonymity
In cases where there is a serious risk of harm, the police and prosecutors may consider witness protection strategies, including applications for anonymity orders or restrictions on public access to sensitive information. Such orders balance the rights of open justice with the need to protect individuals from harm.
Practical Steps if You Are Affected
- Document Incidents: Keep records of threatening messages, comments or behaviour.
- Report Promptly: Contact your local police or court officials about intimidation.
- Seek Support: Use services like the Witness Service or CPS Witness Care Units to understand available protections.
- Legal Advice: If intimidation affects your involvement in proceedings, consult a solicitor experienced in criminal law for guidance on your rights and options.
Common Questions
Can intimidation affect a case's outcome?
Yes. Intimidation that deters witnesses from giving evidence can weaken prosecutions or civil claims and may lead to further criminal charges against the intimidator.
Is it intimidation if someone posts about me online?
Depending on the content and intent, social media threats or publication of sensitive witness information could amount to intimidation or even contempt of court if it interferes with proceedings and is linked to the witness's role.
Can I get compensation if I'm intimidated?
Separate civil claims for harassment or personal injury may be possible in some circumstances, but they are distinct from criminal prosecution for intimidation. Legal advice should be obtained.
Key Takeaways
Witness intimidation in England and Wales involves threatening, coercive or harmful behaviour designed to influence or deter someone because of their role as a witness or in assisting legal investigations. It is a criminal offence under section 51 of the Criminal Justice and Public Order Act 1994 and related law, carrying serious penalties including imprisonment, fines or community orders. The justice system provides statutory protections and support for witnesses, including reporting to police, special measures in court, witness services and potential anonymity orders. If you are affected by intimidation, prompt reporting and seeking support are key to safeguarding your involvement in legal proceedings.
