
He replaces Simon Davies, who leaves the business after 13 years tomorrow (2 October). Davies is to set up creative services agency MMIXX.
Preston, currently director of marketing - portfolio and innovation for Molson Coors (UK), has been with the company for 18 years in various roles across marketing and sales. He will report to chief executive Mark Hunter.
Molson Coors recently acquired the Cobra and Singha beer brands.