Complex sentence: Sir Kenneth Leslie Newman (15 August 1926--4 February 2017) was Commissioner of the Metropolitan Police from 1982 to 1987 and Chief Constable of the Royal Ulster Constabulary from 1976 to 1980.
Split into simpler sentences: Sir Kenneth Leslie Newman (15 August 1926--4 February 2017) was a senior British police officer. He was Commissioner of the Metropolitan Police from 1982 to 1987 and Chief Constable of the Royal Ulster Constabulary from 1976 to 1980.