The IPA creative directors' forum members Nick Bell and Mike McKenna from Leo Burnett judged the July awards, run in association with Campaign, and said "escort was the clear winner from the 50 entries because of its strength and simplicity.
"It was well written, it was funny and it will withstand repeat hearings, which is difficult for funny ads. A lot of people in the industry moan about long-running commercials continuing to gather awards but this was simply the best spot of the month."
Bell and McKenna also congratulated the writers for successfully taking the campaign on to radio after the TV ban on tobacco advertising.
An ad from the Gallaher Hamlet Cigars campaign, titled "economies and written by cdp-travissully's Rob Kitchen, was chosen as joint runner-up.
The other joint runner-up was J. Walter Thompson's "Oscar Romeo ad for Nestle's Kit Kat, written by Kieran Knight and Max Clemens.
The judges said that they were "pushed to find a second runner-up and described "Oscar Romeo as "goodish rather than inspired".
"It's a pity that there aren't any big ideas like Hamlet around any more - ideas that have the potential to be long-running brand properties," Bell and McKenna concluded.