John Cassidy is tax investigations partner at Crowe Clark Whitehill. He joined the Crowe Clark Whitehill Tax Investigations group in 2013 and has over 20 years’ experience working in tax, and was previously a partner at PKF.

He is a high profile figure in tax investigations, with wide ranging experience in the field covering offshore evasion, fraud investigations, the Liechtenstein Disclosure Facility (LDF), disputes with HMRC, professional negligence claims and expert witness work. A regular writer and lecturer, John wrote chapters on tax investigations in the Zurich Tax Handbook and ICAEW’s TAXLine Tax Planning.

In addition to his client facing work, Cassidy represents the ICAEW on HMRC’s fraud forum and is a committee member of the tax investigations practitioners’ group and deputy chairman of the ICAEW enquiries and appeals committee, as well as a member of the management of taxes sub-committee at the Chartered Institute of Taxation (CIOT).