The pair won the Aerial, held in association with Campaign, for their "espadrilles" spot for Vodafone.
This month, the judges for the award were Trevor Robinson and Becky Clarke, the creative directors of Quiet Storm. The runners-up were spots from Saatchi & Saatchi's Joel Bradley for Coco De Mer and an ad entitled "Miami London" for British Airways from the M&C Saatchi team Will Bate and Curtis Brittles.
The winning ad for Vodafone promoted its sponsorship of Manchester United and its 15 per cent offline rental offer. It featured a conversation between a potential customer and a Vodafone representative who asks him to prove that he is a Manchester United fan.
The judges said: "We've all been there when you make a call to a service and they ask you loads of obscure questions to prove that you are who you really are, and often you fail. It is also funny, with great voiceover artists with very realistic comedy timing."
The winning ads can be listened by accessing the Aerials website (www.aerialsfoundation.co.uk).
The winners of each monthly award are put forward to the annual awards ceremony, where an audience of more than 500 creatives votes for the overall winners.