"1968-03-20Z"^^ . . . "Simpson, Joseph"@en . "Commissioner of the Metropolitan Police" . . "1968Z"^^ . "British Chief Constable" . "Sir Joseph Simpson, KBE, KPFSM (26 June 1909 \u2013 20 March 1968), commonly known as Joe Simpson to his men, was Commissioner of Police of the Metropolis, the head of the London Metropolitan Police, from 1958 to 1968. He was the first Commissioner who began his police career as an ordinary Constable."@en . "1909Z"^^ . "1909-06-26Z"^^ . . "Sir Joseph Simpson"@en . . . .