When Dorothy Peto was appointed Superintendent in charge of women police in 1930, Clayden remained as Woman Inspector at Bow Street.
On 30 April 1934 she was promoted to Sub-Divisional Inspector, the first (and possibly only) woman to hold that rank, and became deputy to Peto at Scotland Yard.
A motherly woman, her officers considered her to be far more approachable than the austere Peto.
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