sentences:  He was the first Advocate Depute and Senior Advocate Depute appointed from within the Procurator Fiscal Service, and only the second non-advocate appointed to the office of Lord Advocate, the first being his predecessor, Elish Angiolini.He was installed as a Senator of the College of Justice in December 2016, having served as a temporary judge for the previous 3 months.During his career he appeared for the Crown in the 2004 Glasgow Ice Cream Wars appeals, prosecuted the significant "HM Advocate v Transco" case in 2005, the first ever prosecution of a public limited company for culpable homicide in the country, and oversaw prosecution of the infamous 2007 World's End murder trial, which collapsed due to insufficient evidence and resulted in a public dispute between the Lord Advocate of the time, Elish Angiolini, and the Lord Justice General, Lord Hamilton.