Sir Guy Newey was called to the Bar by the Middle Temple in 1982. He practised at the Chancery Bar between 1983 and his appointment as a High Court Judge at the beginning of 2010.
Before taking silk in 2001, he was one of the Junior Counsel to the Crown (Chancery/A Panel) (from 1990) and Junior Counsel to the Charity Commissioners (from 1991). In 2003 he became an (Acting) Deemster of the Isle of Man, and in 2006 he was appointed as a Deputy High Court Judge.
He also served as a DTI inspector, inquiring into the affairs of MG Rover and associated companies. He has been the Chancery Supervising Judge for the Midland, Wales and Western Circuits since 2014.