Lord Braid was appointed a judge of the Supreme Courts in November 2019, and installed on 23 June 2020.

He graduated from the University of Edinburgh in 1980 with first class honours, winning the Lord President Cooper prize for best student. He practised exclusively as a solicitor, becoming a partner in Morton Fraser in 1985 and a solicitor-advocate in 1995, dealing predominantly with commercial litigation in the Court of Session. 

He became a part-time sheriff in 2001 and was appointed a sheriff in 2005, sitting latterly in Edinburgh. In 2015, he was appointed as a designated personal injury sheriff in the All-Scotland Court, and as one of the first appeal sheriffs in the Sheriff Appeal Court, presiding over both civil and criminal cases.