The judges said: "The DfT has constantly and unfalteringly pushed the radio creative boundaries, using challenging and powerful approaches that deliver their message brilliantly, and are appreciated by the listener."
MediaCom was named media agency of the year on the back of campaigns for advertisers including Direct Line and Churchill.
Other Aerial winners included AMV BBDO and PHD's "here's the deal, here's the idea" for Sainsbury's, WCRS and MediaCom's "mandarin" for Churchill, and M&C Saatchi and MediaCom's "disruption" for Direct Line.
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