The Right Honourable Lord Ericht (Andrew Stewart KC) is a judge of the Supreme Courts of Scotland. 

In 2025 he was appointed as an appeal court judge and privy counsellor.  Prior to that, as a first instance judge, he heard class actions in Scotland and in the UK Competition Appeal Tribunal.

He is currently chairing a working group of the Scottish Civil Justice Council looking at improving the existing Scottish opt-in class action procedure and whether to expand that procedure to opt-out.  

He holds a first class honours LLB degree from Edinburgh University, graduating first in his year.  After qualifying as a solicitor in 1988 and practising with Clifford Chance and Tods Murray WS, he was legal assistant (law clerk) for the Lord President of the Court of Session (Lord Hope) then became an advocate in 1996.  He was Standing Junior Counsel to the UK government Department of Trade and Industry from 2000 to 2009 and was an elected office-bearer of the Scottish Bar (clerk of the Faculty of Advocates) from 2003 to 2009.  After being appointed as a Queen’s Counsel in 2009 he served as an Advocate Depute prosecuting serious crime until 2013 then returned to independent practice in mainly commercial and public law.  He was also a visiting lecturer at the Université de Lorraine, France.

His publications include being editor of Session Cases (the official series of Scots law reports).