What Evidence Is Needed to Charge Someone With Harassment Offences?

Harassment offences in England and Wales are designed to protect individuals from repeated unwanted conduct that causes alarm, distress or fear of violence. Charging someone with harassment requires careful assessment of the course of conduct and impact on the victim under criminal law, particularly the Protection from Harassment Act 1997. Both the police and Crown Prosecution Service (CPS) must gather and evaluate relevant evidence before deciding to prosecute. This article explains the legal framework, the types of evidence needed, how charging decisions are made, and common practical considerations in harassment cases.

Understanding Harassment Offences

Definition of Harassment

Under the Protection from Harassment Act 1997, a person commits a criminal offence if they pursue a course of conduct that:

• Amounts to harassment of another person, and
• They know or ought to know their conduct amounts to harassment.

Harassment includes behaviour that alarming the person or causes them distress. It is not defined exhaustively in the statute, leaving assessment of conduct and its effects to the courts.

The Act requires a course of conduct, generally understood to mean behaviour on at least two occasions in relation to the same person.

More Serious Harassment Offences

The Act also creates more serious criminal offences where the conduct:

• Causes a person to fear violence on at least two occasions; or
• The harassment amounts to stalking with serious alarm or distress.

Stalking offences were added by later legislation, but they are closely related and often considered in harassment cases.

The Charging Decision: Evidential and Public Interest Tests

Before a harassment charge is authorised, the CPS applies the Code for Crown Prosecutors, which requires:

1. Evidential Test: Sufficient admissible evidence must exist to provide a realistic prospect of conviction; and
2. Public Interest Test: It must be appropriate to prosecute given factors such as the seriousness of conduct and harm to the victim.

Police gather evidence and present it to the CPS, which makes the final charging decision under these tests.

Key Types of Evidence Used in Harassment Cases

Establishing an offence of harassment involves demonstrating a course of conduct that amounts to harassment and showing that the suspect knew or ought to have known their behaviour was harassing. The following evidence types are commonly used:

1. Victim's Statements and Accounts

Victim accounts are central to harassment cases. Police will take detailed statements from the complainant outlining:

• What occurred on each occasion;
• How the conduct made them feel (distressed, alarmed or fearful);
• The timing and frequency of incidents;
• Any patterns or escalation of behaviour.

Statements may be recorded in person, by interview under caution, or in writing.

2. Documentary and Digital Evidence

Digital and documentary evidence can be crucial. Examples include:

• Text messages, emails or social media messages showing repeated unwanted contact or abusive communications;
• Chronologies or diaries kept by the victim detailing individual incidents;
• Screenshots, photographic records of messages or behaviour;
• Call logs showing frequency and persistence of contact.

Because harassment can involve different media of communication, evidence may come from emails, direct messages, phone records or online interactions.

3. Witness Statements

Where others have seen or heard aspects of the conduct, their statements support the victim's account. A reliable independent witness can add weight to allegations, especially where digital evidence is limited.

4. Pattern and Course‑of‑Conduct Evidence

Harassment by law requires repeated behaviour. Evidence demonstrating a pattern over time-including incidents that appear minor in isolation but indicate persistence when combined-helps satisfy this element. Police may link reports over time to show continuity.

5. Impact and Corroborative Material

Evidence that the harassment has had a tangible effect on the victim can be significant. This may include:

• Changes in daily routines or behaviour;
• Changes to work, travel routes or social engagement;
• Medical or counselling records documenting distress.

Such material is not required in every case, but it supports the assertion that the conduct had real effects, which is often central to the Crown's case.

Legal Elements That Evidence Must Support

For a successful harassment charge:

A. Course of Conduct

There must be evidence the defendant pursued conduct on more than one occasion in relation to the complainant or group of people, unless multiple targets are involved with one incident each.

B. What the Conduct Amounts To

There must be evidence of behaviour that amounts to harassment, as judged by a reasonable person in possession of the same information. This includes unwanted acts that alarm, distress or are oppressive and unreasonable.

C. Knowledge or Constructive Knowledge

The prosecution must show the defendant knew or ought to have known that their conduct amounted to harassment. The statutory test includes an objective element based on a reasonable person's perspective.

Evidence to support this element may include the nature of the conduct, prior warnings or requests to stop, and the context of the interactions.

Common Practical Questions

Is a Single Incident Enough?

No. A harassment offence under the Protection from Harassment Act typically requires multiple incidents forming a course of conduct. A single act, even if serious, may not meet the statutory definition unless it is part of other offending.

Can Evidence Be Primarily Digital?

Yes. Digital communications often form a substantial part of harassment evidence-multiple text messages, emails, or online messages can demonstrate repetition and impact.

What if the Victim Withdraws Support?

A case may still be pursued if there is sufficient evidence to meet the evidential test without the victim's continued participation, as the CPS applies an evidence‑led approach where appropriate. Investigation should gather all available material to support prosecution.

Is There a Time Limit for Charging?

For simple harassment under the Protection from Harassment Act, there is generally no statutory time limit for charging, but prosecutors will consider the relevance and quality of evidence over time. Police guidance recommends linking incidents so that the course of conduct is clear.

Key Takeaways

To charge someone with a harassment offence in England and Wales, law enforcement and prosecutors must assemble credible and admissible evidence that supports the legal elements under the Protection from Harassment Act 1997. This typically includes:

• Detailed victim accounts of repeated conduct;
• Digital and documentary evidence showing communications or contact;
• Witness statements where available;
• Evidence of a pattern of behaviour forming a course of conduct;
• Proof that the defendant knew or ought to know their behaviour amounted to harassment.

Gathering a comprehensive picture of behaviour and its impact helps satisfy the evidential test and ensures the public interest is considered before prosecution proceeds. Harassment offences are serious and can significantly affect victims' lives, so understanding what evidence is needed can clarify how these cases are investigated and charged.