Their "labour" spot, for Tower Hamlets Council, was judged the top work by the freelance writer and director Paul Burke. The ad targets pregnant mothers who want to give up smoking.
The runners-up in the awards, held in association with Campaign, were JWT's Kevin Masters and Miles Bingham for their Autotrader anti-drink-drive campaign "GPS"; and Geoff Smith and Simon Butler of Grey London with their "post" spot for the Parkinson's Disease Society.
Burke said: "'Labour' is a great radio ad because it couldn't have worked in print or on TV. Simple, straightforward and very powerful."
To listen to the winning ads, follow the Aerial Awards link at arielsfoundation.co.uk.
The Awards will be held in March and will be co-chaired by the Bartle Bogle Hegarty executive creative director, John O'Keeffe, and the Angell Sound managing director, Nick Angell.