UK whistleblower protection law, the Public Interest Disclosure Act

The Public Interest Disclosure Act 1998 is the UK's whistleblower law. It protects workers who report wrongdoing they reasonably believe is in the public interest. It came into force on 2 July 1999 and works by adding new rights to the Employment Rights Act 1996. Below we explain who it covers, what you can report, who to tell, and what a tribunal can award.

Who does the law protect?

The law protects workers, and it reads "worker" in a wide sense. You are covered from your first day on the job. The cover reaches well past the standard payrolled employee. It is the act of reporting that earns protection, not your length of service.

The protected group includes:

• employees, from day one;
• agency workers and people supplied by a third party;
• contractors and freelancers who do the work in person;
• trainees on a work-experience placement;
• GPs, dentists, and other NHS practitioners;
• members of a limited liability partnership;
• police officers, added by a later reform.

The law does not cover everyone, though. The genuinely self-employed who run their own business fall outside it. So do most volunteers and, in most fields, job applicants. The line turns on whether someone does the work in person for another party.

What counts as a protected disclosure?

A protected disclosure is a report of information you reasonably believe shows wrongdoing. You do not have to be right. You only need an honest, reasonable belief. The report must also serve the public interest. A private workplace grievance, on its own, does not count.

The law lists six kinds of wrongdoing you can raise:

• a criminal offence;
• a breach of a legal duty;
• a miscarriage of justice;
• a danger to anyone's health or safety;
• damage to the environment;
• the deliberate hiding of any of the above.

A later change added sexual harassment as its own ground, so it now sits alongside the original six.

The timing and the place do not limit you. The wrongdoing can be in the past, happening now, or only likely to happen. It can also take place anywhere in the world, not just in the UK. What matters is your reasonable belief at the moment you speak up, not where or when the problem sits.

The public-interest test is the big hurdle. Parliament added it on 25 June 2013 through the Enterprise and Regulatory Reform Act 2013. Before that, a worker only had to act in good faith. Now the report must do more than settle a private score. A good-faith motive still matters, but only for the size of any award.

Who can you report to?

The law sets out a tier of people you can tell. Each step has its own conditions. The easy routes ask for less. The wider routes ask for more, because going public carries more risk.

Most reports start inside the workplace. The official list of prescribed persons runs to roughly 80 regulators and bodies. It names the right watchdog for each kind of concern: the Financial Conduct Authority for finance, HMRC for tax, the Health and Safety Executive for safety at work, and the Information Commissioner for data. You can also tell a lawyer at any time.

Going public is the hardest route. A tribunal weighs whether you raised the matter first, how serious it is, and whether you stood to gain. If the failure is exceptionally serious, you can go straight to a wider audience. Even then the tribunal still asks whether your choice of who to tell was reasonable.

You cannot be gagged out of these rights. The law strikes down any contract clause that tries to silence a protected disclosure, including one buried in a settlement agreement.

"Any provision in an agreement to which this section applies is void in so far as it purports to preclude the worker from making a protected disclosure."
Section 43J, Employment Rights Act 1996

How are whistleblowers protected?

Once you make a protected disclosure, the law shields you from payback. Your employer must not punish you for it. If they do, you can take the case to an employment tribunal. Two separate rights sit at the core of that shield.

The first is the right not to suffer a detriment. A detriment is any harm short of dismissal. It covers a demotion, a lost bonus, being frozen out, or a damaging reference. The ban also reaches harm done by your co-workers, not just by the boss.

The second right is stronger. If the main reason for sacking you is a protected disclosure, the dismissal is automatically unfair. You do not need the usual two years of service to claim. The normal age limit does not apply either.

You can also ask for interim relief. If a tribunal thinks your claim is likely to win, it can order your employer to keep paying you while the full case is heard. That keeps a wage coming in during a long fight.

What can a tribunal award?

The remedies are what give the law its teeth. A whistleblower who wins can be put back in their job or paid out. The headline point is the money. Awards for whistleblower dismissal carry no upper limit.

Ordinary unfair-dismissal pay is capped at a year's salary or a set figure, whichever is lower. That cap is lifted for a whistleblower dismissal. A detriment claim can also include a sum for injury to feelings.

Because the cap is gone, serious cases can run into six figures. The award reflects lost earnings, future loss, and the harm done. That risk is what pushes careful employers to take a report seriously the first time.

What are the limits of the law?

The law is strong, but it has real gaps. It protects you only after you act, and only if you fight for it. You bring the case yourself, and the clock is tight. Knowing the weak spots helps you plan before you speak up.

• a claim must usually reach a tribunal within three months of the act you are challenging;
• you have to show that the harm and the disclosure are linked, which can be hard to prove;
• unlike the US system, the UK pays a whistleblower nothing for coming forward;
• the law steps in once the damage is done, not before.

One more point of scope often trips people up. The Act covers Great Britain, which means England, Scotland, and Wales. Northern Ireland sits under its own near-identical order, passed at the same time, so the rights there look much the same but live in a separate law.

How does the UK law differ from the EU rules?

The UK law came first and works in a different way from the EU Whistleblowing Directive. The UK is no longer in the EU, so the Directive does not bind it. Both systems protect whistleblowers, but they pull on different levers.

• the EU rules make firms with 50 or more staff run an internal channel, while the UK law sets no such duty and no staff count, so protection attaches to the person;
• the UK law does not force an employer to build a reporting channel at all, though many still do as good practice;
• the public-interest test is a UK feature that the Directive does not ask for in the same way;
• the UK law works through a tribunal once harm is done, rather than policing company systems up front.

The UK law leaves a gap that good employers fill on their own. It punishes payback after it happens, yet it never tells a company to build a safe way to speak up in the first place. Many build one anyway. A clear internal channel catches problems early and keeps disputes out of a tribunal. A modern whistleblowing system gives staff a confidential route and gives the employer a record of what was done. Campaigners want more still: a single regulator and a legal duty to act on reports. Until that arrives, the choice to listen rests with each employer. To see how the UK sits next to the rest of Europe, browse our list of whistleblowing laws by country.