Whistleblowing Claim Barristers

Whistleblowing law, introduced by the Public Interest Disclosure Act 1998 and now in Part IVA of the Employment Rights Act 1996, protects workers who disclose certain kinds of wrongdoing. A claim depends on showing a "qualifying disclosure" under section 43B: a disclosure of information which you reasonably believed tended to show a criminal offence, a breach of a legal obligation, a miscarriage of justice, danger to health or safety, environmental damage, or the concealment of any of these. Since 6 April 2026 the list has also expressly included sexual harassment. You must also have reasonably believed the disclosure was in the public interest.

Each element is regularly contested. A bare allegation or a general expression of concern may not convey enough "information"; the content needs to be specific enough to tend to show one of the listed failures. Your belief need not be correct, but it must be reasonable. A complaint purely about your own contract can still be in the public interest in some circumstances, but tribunals look at factors such as how many people are affected and the nature of the wrongdoing. To be protected, the disclosure must also go to the right recipient: your employer, a legal adviser, a prescribed person such as a regulator listed by the government, or, in narrower circumstances, the wider world.

There are two main claims. Detriment under section 47B covers any unfavourable treatment, such as being sidelined, disciplined or denied promotion, done on the ground that you made a protected disclosure; it is enough that the disclosure materially influenced the treatment, and co-workers can be personally liable. Dismissal of an employee where the disclosure was the sole or principal reason is automatically unfair under section 103A, needs no qualifying service, and compensation is not capped. Interim relief, an order continuing your employment until the final hearing, can be sought if you apply within seven days of dismissal, and early conciliation does not need to come first for that application.

For the main claim you must go through ACAS early conciliation. Time runs from the act complained of or the dismissal: three months less one day where that was before 1 October 2026, and six months for acts and dismissals on or after that date. A Direct Access Barrister can analyse each disclosure, draft the claim, and represent you at an interim relief hearing or the final hearing. You submit the forms and handle correspondence, which matters most when the seven-day interim relief window applies.

1. 1

   Identify the Disclosures

   You give your Barrister every written or verbal concern you raised. Your Barrister decides which ones are likely to qualify, because a claim built on weak disclosures can fail even where retaliation is clear.

2. 2

   Interim Relief if Dismissed

   If you were dismissed and the case is strong, your Barrister drafts an interim relief application, which you must present within seven days of the dismissal. The tribunal considers whether you are likely to succeed at the final hearing.

3. 3

   ACAS and the ET1

   You notify ACAS for the employer and any individual respondents. Your Barrister drafts the claim with clear tables linking disclosures to detriments, and you submit it within the time limit.

4. 4

   Case Management

   Whistleblowing claims often involve many allegations. At a preliminary hearing the tribunal settles a list of issues, and your Barrister ensures each disclosure and detriment is properly recorded.

5. 5

   Disclosure and Statements

   Documents are exchanged. Internal emails discussing your concerns, and the timing of decisions against you, are often the most revealing evidence of motive.

6. 6

   Final Hearing

   Your Barrister presents your evidence, cross-examines those who acted against you on their reasons, and argues causation and remedy.