On completion of formal schooling in Cowdenbeath Arthur enrolled as a Cadet in Fife Constabulary then in 1962 transferred to the City of Glasgow Police. Appointed to the C I D in 1967 and later as a Fraud Squad officer he voluntarily attended courses and lectures at Glasgow University on Company Law, Mercantile Law, Banking and Forensic Accounting. For a considerable time he operated through the Crown Office and was lead officer investigating fraud as Staff Officer (Crime) direct to the Chief Constable and the Assistant Chief Constable (Crime).
He was awarded an MBE in Her Majesty’s Honours in 1987 for services to the Police and community.
He retired from the Police in 1992 and joined the Crown Office until retirement in 2005 though he is still consulted by the Lord Advocate and Solicitor General and invited to form part of the in-court prosecution team.
As part of the Crown Office in-court prosecution team Arthur intends to talk about “Worlds End Murders” of which Angus Sinclair was convicted and also Sinclair’s second trial conviction. This second trial made Scottish legal history when he became the first man to be convicted under the “double jeopardy law”.