According to Lynda La Plante, on the documentary about the making of
Prime Suspect (1991) (TV), when she called the Metropolitan Police (aka 'Scotland Yard') and enquired as to how many female DCI's there were on the force, the woman who answered her call said, "Oh, quite a number! Four!" Jackie Malton appears on the same documentary, noting that she was one of three DCI's on the force at that particular time.
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