William Nimmo Smith, Lord Nimmo Smith

In 1993, he was appointed along with James Friel, Senior Procurator Fiscal of North Strathclyde, to conduct an investigation into allegations of corruption amongst a so-called Magic Circle in the Scottish justice system, comprising homosexual members of the judiciary, legal profession and police. The allegations included liability to blackmail and giving preferential treatment, including unusually lenient sentences, to homosexual criminals. Concerns had been raised by Linlithgow MP Tam Dalyell with Lothian and Borders Chief Constable Sir William Sutherland. The Report on an Inquiry into an Allegation of a Conspiracy to Pervert the Course of Justice in Scotland was presented to the House of Lords on 26 January 1993 by Lord Advocate Lord Rodger of Earlsferry, and found no evidence of the existence of such a Magic Circle, but strongly criticised some police officers, who it said had treated rumours as fact or had been motivated by homophobia.[2][3][4][5]

In 1995 he was appointed by Michael Forsyth, the Secretary of State for Scotland, to conduct a local inquiry with the terms of reference: "To inquire into the question whether Monklands District Council have failed to comply with the duty imposed on them by section 7 of the Local Government and Housing Act 1989 to make appointments to paid office or employment on merit, and to report thereon." After conducting the inquiry, which included the taking of evidence at hearings open to the public, he reported on 15 December 1995 that there was no evidence that any such appointment had been made otherwise than on merit. The Secretary of State so advised the House of Commons on 20 December 1995.

Nimmo Smith was appointed a temporary judge of the Court of Session in 1995, and in 1996 was raised fully to the Bench as a Senator of the College of Justice, a judge of the Court of Session and High Court of Justiciary, Scotland's Supreme Courts, with the judicial title, Lord Nimmo Smith. Whilst a judge of the Outer House of the Court of Session, he served as the Insolvency Judge and one of the Intellectual Property Judges. In 2002, he was one of five judges who heard the appeal of Abdelbaset al-Megrahi, the man convicted of the 1988 Lockerbie bombing, at the Scottish Court in the Netherlands.[3] He was promoted to the First Division of the Inner House in 2005, at which time he was appointed a member of the Privy Council, affording him the style, The Right Honourable.[2] He retired on 30 September 2009.[1]