She will report directly to the firm's head of HR in EMEA, Liz Bunce-Grundy.
Based at C&W's UK headquarters in London, Peacock joins from Aviva Investors, where she held a leadership role in the HR team and supported a number of business areas, including the global real estate team.
Bunce-Grundy said: "Kirsty brings many years of first-class HR experience. We will work closely to ensure C&W continues to attract and retain the best and brightest real estate talent in the market."
