Molson Coors, the brewer of Carling, is to spend £13m on a new marketing campaign for Grolsch over the next year. The company will launch outdoor advertising on iconic sites such as London’s Piccadilly Circus, as well as ads in national press, magazines and online. The group will also rollout its 4% abv Grolsch Blond from the on-trade to the take-home market.