Since April 2018, Gill has been Her Majesty’s Chief Inspector of Constabulary in Scotland, which is an independent role under Royal Warrant. She is also Scotland’s senior advisor on policing. The Inspectorate has wide ranging powers to assess the state, effectiveness and efficiency of both Police Scotland and the Scottish Police Authority. Immediately prior to this appointment, Gill was the deputy at HMICS for two years, on secondment from Police Scotland.
Over her 30 years of police service, she served in a wide range of uniform and detective posts, notably as the commander of the city of Edinburgh division, and the head of CID for Lothian and Borders Police. When Police Scotland was introduced in 2013, she served in a national role as the Detective Chief Superintendent for public protection and local crime, before taking command of the Lothians and Scottish Borders division.