What Is Whistleblowing? Meaning, Examples and UK Law

What is whistleblowing? A simple definition

Whistleblowing is when a worker reports certain types of wrongdoing, usually in the workplace. The wrongdoing must be in the public interest, meaning it affects others rather than just being a personal complaint about the worker's own employment situation.

In UK law, whistleblowing is legally known as making a protected disclosure. A worker who makes a protected disclosure is protected from being treated unfairly or dismissed because they raised the concern.

This guide covers the meaning of whistleblowing, examples that count, what is protected in UK law, and why it matters for organisations.

This guide is for informational purposes only and does not constitute legal advice. Organisations and individuals should consult qualified legal professionals about their specific circumstances.

What does whistleblowing mean?

Whistleblowing is the act of reporting wrongdoing, typically within an organisation. The person who reports it—a whistleblower—is usually a worker or former worker who has witnessed something they reasonably believe is harmful, illegal, or unethical.

In the UK, whistleblowing law is set out in the Public Interest Disclosure Act 1998 (PIDA), which amended the Employment Rights Act 1996. This legal framework protects workers who make "protected disclosures".

The key features of whistleblowing are:

• Public interest: The concern must affect others, not just the person raising it
• Certain types of wrongdoing: It must relate to one of the specific categories in law
• Reasonable belief: The worker must genuinely believe the wrongdoing is happening
• Appropriate channel: The disclosure must be made to the right person or body

What counts as whistleblowing in the UK?

For a disclosure to qualify as whistleblowing and receive legal protection, a worker must:

• Reasonably believe the disclosure shows wrongdoing has happened, is happening, or is likely to happen
• Reasonably believe the disclosure is in the public interest
• Make the disclosure through the appropriate channels

Types of wrongdoing that count

A worker must reasonably believe that one or more of the following has occurred, is occurring, or is likely to occur:

• A criminal offence – for example, fraud or theft
• A breach of a legal obligation – such as failing to have the right insurance
• A miscarriage of justice – evidence that would have changed a court case
• Danger to health and safety – such as unsafe working practices
• Damage to the environment – pollution or environmental harm
• Sexual harassment – added to the list by the Employment Rights Act 2025
• Deliberate concealment – covering up any of the above

The public interest test

The public interest test is crucial. A worker must reasonably believe that reporting the wrongdoing is in the public interest. Generally, this means the wrongdoing will impact others, not just the worker.

An employment tribunal would consider factors such as:

• The size of the affected group – a larger group may indicate public interest
• The nature of the wrongdoing – serious matters like public health or substantial fraud are more likely to meet the test
• Whether the wrongdoing was deliberate – deliberate wrongdoing may be more likely to be in the public interest
• The identity of the wrongdoer – high-profile people or large organisations may have wider reach

For a deeper walkthrough of that legal test, see Public Interest Test Explained.

Who can make a protected disclosure

The definition of "worker" for whistleblowing purposes is broad. It includes:

• Employees and workers
• Trainees and work experience placements
• Agency workers
• Student nurses and midwives
• Police constables and police cadets
• Self-employed NHS practitioners (doctors, dentists, pharmacists)

However, certain groups are unlikely to be protected, including volunteers, self-employed people (outside specific NHS categories), non-executive directors, and members of the armed forces.

Examples of whistleblowing

The following examples illustrate the types of concern that could qualify as whistleblowing. In each case, the worker must reasonably believe the wrongdoing is in the public interest.

Criminal activity

• An employee discovers their manager is committing fraud through fake invoices
• Financial records appear to be deliberately manipulated to misrepresent company performance

Breach of legal obligations

• An employer fails to provide mandatory insurance cover required by law
• A company breaches data protection regulations by selling customer data

Health and safety risks

• A worker reports unsafe working practices that could cause serious injury
• A hospital worker raises concerns that hygiene standards are dangerously low

Environmental damage

• An employee reports that a company is illegally dumping hazardous waste
• A firm ignores environmental regulations that could cause pollution

Sexual harassment

• An employee reports a colleague for sexually harassing other workers
• A manager covers up complaints of sexual harassment by a senior leader

Cover-ups

• A worker discovers evidence that a health and safety incident was deliberately hidden
• An employee reports that a fraud investigation was obstructed

Important note: These are examples only. Whether a specific situation qualifies as whistleblowing depends on the facts and legal tests. This is not legal advice. If you are unsure, seek professional legal advice.

What isn't usually whistleblowing?

Not every complaint is whistleblowing. A key distinction is whether the concern is personal or in the public interest.

Grievances

A grievance generally concerns an employee's own employment situation—something that affects them personally rather than the wider public interest. Examples include:

• Disagreements about pay or working conditions
• Unfair treatment of the individual
• Bullying or harassment of the individual
• Contractual disputes

A grievance is about personal rights and employment terms. It does not typically qualify for whistleblowing protection, though in some situations a grievance may also contain elements of whistleblowing.

For a detailed comparison, see Whistleblowing vs Grievance: What's the Difference?.

Personal employment complaints

• "My manager unfairly gave me a poor performance review" – usually a grievance
• "I disagree with my shift allocation" – usually a grievance
• "I was denied a promotion I deserved" – usually a grievance

These concerns affect the individual and generally lack the wider public interest required for whistleblowing protection.

Disagreements with policy

Disagreements with organisational policy or expenditure are generally not whistleblowing unless they involve wrongdoing. For example, disagreeing with a government policy or a business decision would not normally qualify.

Who can be a whistleblower?

Almost anyone working in or for an organisation can be a whistleblower. The law protects a wide range of workers, not just employees.

Workers are protected

The term "worker" for whistleblowing purposes includes:

• Employees – full-time, part-time, and fixed-term
• Agency workers – supplied by an agency
• Trainees – on work experience (not from educational establishments)
• Student nurses and midwives
• Police constables and police cadets
• Self-employed NHS practitioners – doctors, dentists, ophthalmologists, pharmacists

Who is not protected

• Volunteers – not covered by whistleblowing law
• Self-employed – outside specific NHS categories
• Non-executive directors
• Members of the armed forces
• Crown employees working for MI5, MI6, or GCHQ

Former workers are also protected from detriment linked to a disclosure made during their employment.

Can whistleblowing be anonymous?

Yes, whistleblowing can be anonymous, but there is an important distinction between anonymous and confidential.

Anonymous reporting

Anonymous means the organisation does not know the reporter's identity. The reporter does not provide their name, contact details, or any identifying information.

Anonymous reporting can be valuable because it removes the fear of retaliation. However, it can make follow-up more difficult because the organisation cannot contact the reporter for clarification or evidence.

Confidential reporting

Confidential means the organisation knows who the reporter is but agrees not to disclose their identity without consent. This allows follow-up while protecting the reporter's identity.

The EU Whistleblowing Directive requires organisations to provide both types of reporting where permitted. In practice, many platforms support both.

The practical difference matters:

Disclosurely supports both anonymous and confidential reporting, with encryption in transit and at rest plus access controls so only authorised handlers can read case content. See Encryption & Data Handling.

What happens after someone raises a concern?

Organisations have a legal and ethical duty to handle whistleblowing concerns properly. While specific processes vary, the following high-level steps are common.

1. Report received

The concern is submitted through a reporting channel (web form, phone, email, etc.). The reporter receives an acknowledgment, usually within seven days under the EU Whistleblowing Directive.

2. Initial assessment

The organisation assesses the concern to determine:

• Whether it qualifies as whistleblowing (public interest)
• The seriousness of the allegations
• Whether an investigation is needed
• Who should handle the case

3. Clarification

Where possible, the investigator may contact the reporter for clarification, additional evidence, or to ask follow-up questions. If the report was anonymous, this is not possible.

4. Investigation or appropriate handling

For whistleblowing concerns that meet the criteria, the organisation should conduct a proportionate investigation. This may involve:

• Gathering evidence
• Interviewing witnesses
• Reviewing documents
• Maintaining confidentiality throughout

5. Outcome and follow-up

The reporter should be informed of the outcome of the investigation (or be told why no action was taken), without compromising the rights of others.

This is a general guide. Organisational processes differ. For more detail, see our Whistleblowing Software guide.

What protections exist for whistleblowers in the UK?

UK whistleblowing law provides important protections, but it is not an absolute guarantee against all negative consequences.

Protection from detriment

Workers are protected from being subjected to a "detriment" because they made a protected disclosure. A detriment includes:

• Reduction in work hours
• Harassment
• Withholding of promotion or training opportunities
• Any other unfavourable treatment

Protection from unfair dismissal

If a worker is an employee, they are also protected from unfair dismissal where the reason for dismissal is that they made a protected disclosure—and the statutory conditions for that protection are met.

Automatic unfair dismissal

Where an employee is dismissed because they made a protected disclosure—and the statutory conditions for that protection are met—the dismissal is automatically unfair. The tribunal does not need to prove the employer acted unreasonably. Simply labelling a concern as "whistleblowing" does not create that protection on its own.

Who enforces these protections?

Workers can enforce their rights by taking a case to an employment tribunal. They can seek compensation if successful, which may include damages for financial loss or injury to feelings.

Important nuance

The protections are not unlimited. They apply only if the disclosure qualifies as a protected disclosure—which means meeting the tests above. Even if a worker believes they are making a protected disclosure, a tribunal may decide otherwise if the tests are not met.

The law does not guarantee that a whistleblower will not face retaliation in practice. Rather, it provides a remedy after the fact if they can prove they have been subjected to a detriment or dismissal because of their protected disclosure.

Recent reforms

The Employment Rights Act 2025 expanded protections in two ways:

• Sexual harassment is now specifically included as a type of qualifying disclosure
• Non-disclosure agreements that prevent workers from talking about harassment or discrimination are now void in certain circumstances

Why might employees not speak up?

Despite legal protections, many employees hesitate to blow the whistle. Understanding these barriers can help organisations create better reporting cultures.

• Fear of retaliation: Even with legal protections, workers may fear career damage, bullying, or dismissal
• Lack of confidentiality: Concern that their identity will not be protected
• Uncertainty: Not knowing whether their concern qualifies as whistleblowing
• Lack of trust: Believing the organisation will not take the concern seriously
• Cultural factors: A workplace culture that discourages "rocking the boat"
• Process confusion: Not knowing how or where to raise a concern

Organisations that build strong whistleblowing cultures—with clear processes, anonymous reporting options, and visible senior leadership support—can help address these barriers.

Whistleblowing FAQs

What is a simple definition of whistleblowing?

Whistleblowing is when a worker reports wrongdoing in the workplace that they reasonably believe is in the public interest. It becomes a "protected disclosure" under UK law, giving the worker legal protection.

What is an example of whistleblowing?

Reporting that a company is fraudulently misrepresenting financial records, that safety procedures are being deliberately ignored, or that a manager is sexually harassing colleagues could all be examples. The concern must be in the public interest, not just a personal employment issue.

What counts as whistleblowing in the UK?

A disclosure counts if the worker reasonably believes it shows criminal activity, breach of legal obligations, miscarriage of justice, danger to health and safety, environmental damage, sexual harassment, or concealment of any of these. It must also be in the public interest.

Is a grievance the same as whistleblowing?

No. A grievance is usually a personal complaint about the employee's own employment situation. Whistleblowing is about wrongdoing that affects others—the public interest. The two can overlap, but they are different. See Whistleblowing vs Grievance: What's the Difference?.

Can whistleblowing be anonymous?

Yes. Anonymous reporting allows workers to raise concerns without revealing their identity. Confidential reporting means the organisation knows the identity but agrees not to share it. Both are valid approaches with different benefits.

Can you be dismissed for whistleblowing?

Not lawfully where the reason for dismissal is that you made a protected disclosure—and only if the statutory tests for a protected disclosure are met. Simply calling a concern "whistleblowing" is not enough. Where those conditions are met and you are an employee, the dismissal is automatically unfair.

Who can whistleblow?

A wide range of workers: employees, agency workers, trainees, student nurses, police officers, and self-employed NHS practitioners among others. Volunteers, non-executive directors, and members of the armed forces are not protected. See the GOV.UK whistleblowing guidance for full details.

Is bullying a grievance or whistleblowing?

Bullying and harassment of an individual is typically a grievance. However, if bullying is widespread or has a wider public interest element (for example, sexual harassment policy failures), it may contain whistleblowing elements. Each case depends on the facts.

Creating a whistleblowing policy

If you need to create or review your organisation's policy, see our UK cornerstone guide and free template: Whistleblowing Policy: UK Guide, Examples & Free Template.

Sources

• GOV.UK – Whistleblowing: for prescribed persons
• GOV.UK – Whistleblowing guidance for employers
• House of Commons Library – Protections for whistleblowing and non-disclosure agreements
• Independent National Whistleblowing Officer – The difference between a grievance and a concern
• Rocket Lawyer – Employee grievances and raising grievances
• Disclosurely – Encryption & Data Handling

This guide is for informational purposes only and does not constitute legal advice. Organisations and individuals should consult qualified legal professionals about their specific circumstances.