Alex Marshall (police officer) - Alexander John Marshall QPM better known as Alex Marshall is the Chief Constable of the College of Policing. Marshall was previously Chief Constable of Hampshire Constabulary (2008-2013). He started his career in 1980 with the Metropolitan Police Service transferring in 2000 to Cambridgeshire Constabulary. During this time he also worked as a consultant for the Home Office on bureaucracy in frontline policing. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Office Holder