Sir Nicholas Warren was called to the Bar (Middle Temple) in 1972.
He was Standing Junior Counsel to the Inland Revenue in capital tax matters before his appointment as Queen’s Counsel in 1993.
He was Chair of the Chancery Bar Association from 1990 to 1993. He was appointed as a judge of the Chancery Division in 2005. He was President of the Tax and Chancery Chamber of the Upper Tribunal from 2009 to 2015.