The team's "Notting Hill revised" spot for Pimm's was judged the best ad of the month by Jeremy Carr, the creative director at Miles Calcraft Briginshaw Duffy.
It beat another Mother ad, part of the COI Communications "Frank" anti-drugs campaign, written by Jim Thornton before he left the agency for Leo Burnett.
A second runner-up, "accents" for HSBC, was created by Elliot Wykes and Lesley Nightingale of Lowe.
The Pimm's ad features the upper crust character Harry Fitzgibbon-Simms from the TV campaign and his trusty sidekick Holland who are invited to a "soiree" in Notting Hill. They find themselves in the middle of the Notting Hill carnival but still crack open the Pimm's with the famous line: "It's Pimm's o'clock."
Carr said: "It's not always an easy task continuing a TV idea on to radio.
This ad not only shows the campaign's versatility, but evokes a topical image of that tweedy toff and his whizzy hamper. As someone once said, 'the pictures are better on radio'."