A graduate in both history and law, Robert Weir KC, the Honourable Lord Weir, served his traineeship with Maclay Murray and Spens, Solicitors, before being admitted to the Faculty of Advocates in July 1995.
He served as an Advocate Depute between 2005 and 2008, took silk in 2010, and was appointed a floating sheriff of South Strathclyde Dumfries and Galloway, based at Hamilton Sheriff Court, in April 2015.
In April 2018 he took up a position as one of the resident sheriffs at Edinburgh Sheriff Court, sitting as one of the specialist sheriffs in the All Scotland Sheriff Personal Injury Court. He served as a temporary judge of the Court of Session between 2017 and 2020, and was appointed a Senator of the College of Justice in April 2020.