UK Whistleblowing PIDA (2026/27): Protected Disclosures + Uncapped Compensation
UK whistleblowing protection 2026/27: Public Interest Disclosure Act 1998 (PIDA) inserted into ERA 1996, the 6 qualifying disclosure subjects, public interest test, internal vs prescribed person vs wider disclosure routes, automatic unfair dismissal from day one, uncapped compensation including injury to feelings, ICO + FCA + HSE prescribed persons.
Overview
Comprehensive guide to UK whistleblowing protection for 2026/27: Public Interest Disclosure Act 1998 mechanics, the 6 qualifying disclosure subjects, the public interest test, internal vs prescribed person vs wider disclosure routes, automatic unfair dismissal protection from day one, uncapped compensation including injury to feelings, and the free Protect advice service.
The 6 qualifying disclosure subjects
Criminal offences
Any criminal act - fraud, theft, assault, harassment criminalised under specific legislation.
Breach of legal obligation
Breach of any law - employment, environmental, health + safety, consumer protection, data protection. Covers most regulatory contraventions.
Miscarriages of justice
Convictions or pending trials where evidence has been tampered with, withheld, or fabricated.
Danger to health + safety
Risk to anyone's health or safety (employee, customer, public). One of the most common categories.
Damage to environment
Actual or threatened environmental damage - pollution, illegal disposal, breach of permits.
Deliberate concealment
Concealing information that one of the above is occurring or has occurred. Cover-ups are themselves disclosable.
Disclosure must (a) tend to show one of these 6 + (b) be in the public interest + (c) be a reasonable belief held by the worker. The disclosure becomes "protected" once made via an appropriate route.
Disclosure routes (lowest to highest threshold)
- Internal - employer, line manager, designated whistleblowing channel. Easiest threshold. Most employers prefer + have policies for this route.
- Prescribed person - regulator from the government\'s prescribed persons list: FCA (financial services), HMRC (tax), ICO (data protection), HSE (health + safety), CQC (healthcare), Ofsted (education), Pensions Regulator, Charity Commission, etc. Same threshold as internal + can preserve protection where internal route is unsafe.
- Legal adviser - solicitor / barrister giving legal advice. Always protected.
- Minister of the Crown - typically used by civil servants disclosing to their relevant Minister.
- Wider disclosure (press, MP, campaign group) - much higher threshold: usually requires having tried internal/prescribed routes first OR reasonable belief that internal route would lead to retaliation OR belief that information would be concealed. Without these conditions, wider disclosures may LOSE protection.
What protection covers
- Right not to be dismissed for making a protected disclosure - automatic unfair dismissal, NO 2-year service requirement.
- Right not to be subjected to detriment - denied promotion, denied bonus, denied training, exclusion from meetings, harassment, isolation, performance management of a manufactured nature.
- Uncapped compensation for dismissal (unlike ordinary unfair dismissal). Includes future loss of earnings, injury to feelings (Vento bands £1,200-£60,800 in 2026/27), pension loss.
- Worker (not just employee) coverage - PIDA extends to certain agency workers, NHS trainee doctors, police officers (limited).
- Protection extends to the disclosure itself + the worker\'s identity where prescribed persons handle it - statutory obligations to protect.
Practical steps before disclosing
- Get advice first - free + confidential through Protect (protect-advice.org.uk, 020 3117 2520). They\'re the leading UK whistleblowing charity.
- Document the wrongdoing - emails, dates, witnesses, financial records. Don\'t copy confidential employer data unlawfully - that creates separate problems.
- Check the policy - many employers have explicit whistleblowing procedures. Following them strengthens your protection.
- Pick the right route - internal for routine matters, prescribed person if internal is unsafe or if there\'s a regulator with the right remit.
- Frame in writing - in writing where safe. State the reasonable belief + the public interest aspect explicitly.
- Anticipate the impact - even where law protects, the practical experience of whistleblowing is often professionally damaging. Have a plan.
Related guides
- UK Constructive Dismissal 2026/27 - related route if treated badly after disclosure.
- UK Probation Period Rights 2026/27 - whistleblowing protection from day one.
- UK Equal Pay Act 2026/27 - parallel protected disclosure route.
- UK HMRC COP9 / CDF - tax disclosure context.
Frequently asked questions
What is a protected disclosure?
Under Sections 43A-43L Employment Rights Act 1996 (as inserted by PIDA 1998), a "qualifying disclosure" is one that the worker reasonably believes (a) tends to show one of the 6 listed subjects (criminal offence, legal breach, miscarriage of justice, health + safety danger, environmental damage, deliberate concealment), AND (b) is in the public interest. To become "protected", it must be made by an appropriate route - internally, to a prescribed person (regulator), or in wider circumstances. The "reasonable belief" test means the disclosure is protected even if the belief turns out to be wrong, as long as it was reasonably held.
What's the "public interest" test?
Added by the Enterprise + Regulatory Reform Act 2013 to filter out purely personal grievances. The disclosure must be one that, in the worker's reasonable belief, is in the public interest - i.e. affects more than just the worker themselves. Chesterton Global v Nurmohamed [2017] confirmed that the disclosure doesn't have to affect the WHOLE public - even a relatively narrow group (e.g. a workforce of 100) can qualify. The test is the worker's reasonable belief at the time, not the actual public interest.
What's the difference between internal, prescribed person, and wider disclosure?
Three tiers: (1) Internal disclosure - to employer or a person at work. Easiest threshold; minimal additional tests required if reasonable belief + good faith. (2) Prescribed person - disclosure to a regulator listed on the government's prescribed persons list (FCA for financial services, ICO for data protection, HSE for health + safety, Care Quality Commission for healthcare, etc.). Same threshold as internal but requires reasonable belief that the regulator is the appropriate body. (3) Wider disclosure (e.g. press, MP, campaign group) - much higher threshold: usually need to have tried internal/prescribed routes first, OR have a reasonable belief that internal disclosure would lead to retaliation, OR believe the information would be concealed.
What protection do I get?
Two main protections under ERA 1996 Part IVA: (a) Right not to be subjected to detriment for making the disclosure - any negative action (denied promotion, denied bonus, denied training, exclusion, harassment) that's "on the ground that" you made the disclosure. (b) Right not to be dismissed for making the disclosure - automatic unfair dismissal, NO 2-year service requirement. Compensation is UNCAPPED for whistleblowing dismissal (unlike ordinary unfair dismissal which is capped at lower of 52 weeks pay or £123,543 in 2026/27). Includes lost earnings + injury to feelings + future loss + pension loss.
Should I make the disclosure in writing?
Yes, where safe + practical. Written disclosure creates evidence of what was said + when. Use the employer's whistleblowing policy if one exists - many large employers have explicit whistleblowing channels (Compliance, internal hotline, ethics committee). Keep your own copy. If unsafe to use employer channels (e.g. the wrongdoing involves senior management), use a prescribed person directly. The free organisation Protect (formerly Public Concern at Work) provides confidential advice to whistleblowers.
Will I be protected if my disclosure is leaked / I'm identified?
Protection from retaliation applies regardless of how the employer found out. But maintaining confidentiality is much safer practically. Tips: (a) Use the employer's formal channel if it has a confidentiality commitment. (b) Use a prescribed person - they have statutory obligations to protect identity where possible. (c) Avoid mass-emailing colleagues - the wider it spreads, the harder to maintain. (d) Some whistleblowers use solicitors to make the disclosure on their behalf. (e) If identified + retaliated against, the law protects you - but the practical experience of being a known whistleblower is often very damaging professionally.
What's the time limit for claiming detriment / dismissal?
Detriment claim: 3 months less 1 day from the last act of detriment, or from a continuing act's end. Dismissal claim: 3 months less 1 day from the effective date of termination. ACAS Early Conciliation extends slightly. Series-of-detriments claims can run further back if connected. Many whistleblowers face cumulative detriment over months/years before dismissal - documenting each act in real time is essential.
Is the Employment Rights Bill changing whistleblowing?
The Employment Rights Bill 2024 contains relatively limited changes to whistleblowing - existing PIDA protections remain. But the wider strengthening of unfair dismissal (day-one right beyond 9-month statutory probation) reinforces whistleblowing protection for short-service workers. The proposed Whistleblowing Bill (separate, private member's bill) would establish an independent Office of the Whistleblower with stronger investigation powers + clearer "reward" framework similar to the US SEC scheme - but as of mid-2026 it has not passed.