William Boyce KC

William Boyce KC is a highly regarded advocate in corporate and financial crime, trusted to act in complex and high-profile cases for both corporates and individuals. His practice spans banking and mortgage fraud, market manipulation, insider dealing, mergers and acquisitions-related offences, false market announcements, international bribery and corruption, sanctions breaches, cartel conduct and health and safety matters. William’s strategic insight and calm authority make him a go-to adviser for clients facing serious regulatory and criminal exposure.

In general crime, William is consistently instructed in the most serious and sensitive matters. He represents clients through every stage of a case, from pre-charge advice to appearances in the Supreme Court, and draws on his experience as a Recorder to bring deep judicial understanding to his practice. William is also a leading figure in private prosecutions, regularly advising, prosecuting and defending in complex and high-value matters, particularly those involving financial wrongdoing. Praised for his fairness as a prosecutor and his exemplary tactical judgement as defence counsel, he led the largest-value private prosecution ever brought in the UK. His blend of courtroom excellence, strategic foresight and breadth of expertise ensures he remains a trusted choice for clients navigating the highest-stakes criminal and regulatory challenges.