Joseph Hage Aaronson LLP

Contentious Tax, Commercial & Chancery Litigation, Investigations.

Iain was called to the Bar in 2006 and his practice focuses on contentious tax, allegations of fraud/avoidance/abuse, and investigations. He has litigated several of the leading cases on HMRC investigative powers, VAT fraud, and the Knowledge/Means of Knowledge tests.

Iain manages a wide variety of work for an international client base, ranging from UHNWIs to PLCs and owner-managed businesses to trusts and funds.  He is often sought out by other legal and professional advisors for a second opinion and to help ‘unlock’ long-running or complex disputes.

Before pupillage, Iain worked for HMRC Solicitor’s Office in both Excise litigation and VAT litigation. He has acted as counsel both for and against HMRC in a variety of disputes in the Tax Tribunal, Upper Tax Tribunal, High Court (Admin, ChD and Comm), Court of Appeal (Civil), House of Lords and UK Supreme Court.  He became a partner at JHA in 2021 and prior to that had been a tenant at a leading set of Chambers and a Dispute Resolution Partner at a City law firm.

Bar of England & Wales.