The Green Awards were set up in 2006 and aim to reward work across all marketing disciplines that communicates the importance of sustainability. The awards are produced by sustainability consultancy Green.
The Grand Prix went to the CEPF for a series of posters developed to encourage people to drive less and walk more.
The Lifetime Achievement Award went to Sir David Attenborough for his broadcast work, including the Life series.
Other winners included Arjowiggins Graphics, which won in the Best Green Direct Response category for its What 1 Tree Means to Me campaign created with Bostock and Pollitt, and Forum for the Future, which won in the Best Green Public Sector Campaign category for its Farming Futures project.