The agency won the Lions Direct for a mailing campaign for the AA called "hitchhiker", which was in support of firm's breakdown service.
The UK did well in the first event. As well as winning the Grand Prix, Harrison Troughton also picked up a second Gold for the AA.
Saatchi & Saatchi, London, also won three direct golds, two of which were for St. Mungo's Homeless Charity while it picked up a third for the MS Society charity.
In all, the UK managed to pick up a total 17 of the 43 Direct Lions, making it the most successful country in the inaugural competition.
Harrison Troughton won the award from what turned out to be a heavily contested field. There had been some fears, following the cancellation of the separate direct festival, that entries would be low.
The category received 1,063 entries in the end, which the 25-strong jury whittled down to select the award's first Lions Direct Grand Prix.
Thirteen direct golds were awarded in the Lions Direct and the entries were praised for a high standard of creativity. Jury president Malcolm Speed, CEO of Rapp Collins Worldwide, New York, said judges focused on highly targeted, highly impactful work fuelled by a strong creative idea.
A total of 44 Lions were awarded across categories including FMCG, information technology, financial services, commercial public services, publications and media, business-to-business products, non-profit organisations, mailing, direct response print, direct response TV, alternative media and integrated solutions.
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