Cressida Dick was the first what to become head of London's Metropolitan police department?
Commissioner of Police of the Metropolis: The Commissioner of Police of the Metropolis is the head of London's Metropolitan Police Service. Cressida Dick: Cressida Rose Dick, {'1': ", '2': ", '3': ", '4': "} (born 16 October 1960) is a British senior police officer, currently the Commissioner of the Metropolitan Police in London. Cressida Dick:  She is the first woman to take charge of the service, being selected for the role in February 2017 and taking office on 10 April 2017.
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