Whether advising on lengthy criminal investigations or the commencement of Code of Practice 9 proceedings, we have experience of guiding clients through each stage of tax and revenue investigations with robust and coherent strategy.

Regularly, we seek to deflect and limit criminal investigations at an early stage, and have experience in reaching civil settlements. We also regularly advise in investigatory process, COP 9 interviews, and work closely with tax experts in negotiating settlement agreements. The aim, always, is to avoid custodial sentence or criminal sanction, wherever possible.

Notable Experience

  • Acting for a solicitor in HMRC's biggest prosecution for carbon credit tax fraud. Acting for an accountant and entrepreneur in HMRC's series of trials for film investor tax relief prosecutions.
  • Advising a former FTSE executive in connection with an ongoing investigation into allegations of fraud, bribery and corruption.
  • Acting for a leading insolvency practitioner in HMRC's biggest prosecution for phoenixism tax frauds.
  • Acting for former directors of a leading marketing agency in relation to tax avoidance schemes as part of the Panama and Paradise Papers scandals.
  • Acting for a leading hedge fund and its officers in an HMRC criminal investigation for alleged tax frauds. 
  • Acting for a high net worth individual in an HMRC criminal investigation concerning frauds perpetrated in the Covid government procurement for pharmaceutical products.

News & Insights

13.05.26

PCB Byrne LLP will be participating in the London Legal Walk on Tuesday, 9 June 2026

08.05.26

PCB Byrne LLP are co-hosting two events at the London International Disputes Week

07.05.26

A Global First in Asset Tracing

09.04.26

Factual Connections and Frozen Payments: The Supreme Court's Landmark Ruling on Russian Sanctions and Letters of Credit