The agency snared the six figure account following competitive pitch. It is on the verge of launching a big brand campaign to raise the company's profile in the trade press.
Clarion board director Philippa Wynn-Green, who is heading up the account, said: 'Constellation Europe is the biggest wine producer in the world and it needs to start acting like a power brand.'
Constellation Europe's wine brands include Hardys (the UK's best selling wine brand), Stowells, Banrock and Kumala. February's Echo Falls brought in Shine for its consumer work.
Clarion Communications has also won the trade work for the brand's cider division. Gaymer Cider Company is a division of the producer, but is run separately. Brands include Diamond White. It previously handled consumer work for the company.
Wynn-Green reports into the wine company's VP comms Philip Malpass.