Richard Mayne
Sir Richard Mayne KCB (27 November 1796 – 26 December 1868) was a barrister and the joint first Commissioner of Police of the Metropolis, the head of the London Metropolitan Police (1829–1868). With an incumbency of 39 years, he remains the longest-serving Commissioner in the force's history, as well as the youngest on his appointment. Provided by Wikipedia-
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