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London Whistleblower Lawyer
For over 38 years, we've represented some of the highest-profile whistleblowers in history — including landmark cases against UBS and Danske Bank.
Our attorneys were influential in helping HM Revenue and Customs – the UK’s tax authority – build the UK’s first tax whistleblower reward program. This is modeled after the IRS Whistleblower Program, which we also had a major hand in helping write the rules for in the U.S.
For over 38 years, our founding attorneys have represented numerous international whistleblowers across multiple UK and cross-border regulatory regimes – from tax fraud to financial services misconduct to corporate bribery.
HM Revenue & Customs (HMRC) Whistleblower Reward Program
Under HMRC’s Strengthened Reward Scheme, informants who provide information leading to the recovery of at least £1.5 million in unpaid tax can receive between 15% and 30% of the tax collected (excluding penalties and interest). Awards are discretionary and are not guaranteed. Full eligibility criteria are set out in HMRC’s official guidance.
Financial Conduct Authority (FCA) Whistleblower Protections
Employees and ex-employees of FCA-regulated financial services firms who witness wrongdoing – such as market abuse, fraud, or breaches of FCA rules – can report directly to the FCA’s Whistleblowing team. However, there are no rewards or protections for reporting.
Note: UK-regulated firms are required to appoint a designated “whistleblowers’ champion” and maintain internal procedures for handling protected disclosures under the FCA Handbook.
Serious Fraud Office (SFO) Self-Reporting and Corporate Cooperation
Companies facing potential liability for bribery, fraud, or corruption can self-report to the SFO. Under the SFO’s Corporate Co-operation Guidance, prompt self-reporting combined with full cooperation will, absent exceptional circumstances, lead to an invitation to negotiate a Deferred Prosecution Agreement (DPA) rather than face prosecution.
Our Track Record: International Whistleblower Cases
Our attorneys represented Danske Bank whistleblower Howard Wilkinson, who exposed a scheme that moved rubles out of Russia, converted them to dollars at the Estonian branch of Danske Bank, and then moved the dollars to New York with help from Bank of America, J.P. Morgan, and Deutsche Bank.
We also represented Bradley Birkenfeld, a former international banker and wealth manager at UBS Bank in Switzerland, who exposed a massive tax evasion scheme. Under a deferred prosecution agreement with the U.S. Department of Justice, UBS agreed to pay $780 million in fines, penalties, interest and restitution and to identify U.S. account holders.
Frequently Asked Questions
Yes. HMRC’s Strengthened Reward Scheme, launched in November 2025, offers informants 15–30% of tax recovered on qualifying reports of at least £1.5 million. It is modeled on the U.S. IRS Whistleblower Program but remains discretionary rather than a statutory right to payment.
Depending on the misconduct, reports may go to HMRC (tax fraud and evasion), the FCA (financial services misconduct), the PRA (prudential/banking matters), or the SFO (serious fraud, bribery, and corruption).
Yes. Our attorneys regularly advise international whistleblowers navigating both U.S. and UK reporting regimes, including cases that involve cross-border conduct reportable in multiple jurisdictions.
UK whistleblowers are protected from retaliation under the Public Interest Disclosure Act (PIDA).
Given our deep experience in shaping reward programs and international client representation, if you’re seeking a London whistleblower lawyer, we’re positioned to handle cases involving foreign corruption, transnational money laundering, and tax evasion or avoidance – regardless of whether you’re reporting under U.S. or UK law.
Get in touch with one of our London whistleblower attorneys today for a free and confidential consultation. There is no fee unless we win your case and help you obtain an award.
