By avoiding the obvious approach of highlighting the health benefits (that are already widely known) and, instead, reminding people of how enjoyable walking actually is, we were able to develop advertising that is far more persuasive.
Executionally, the innocence and charm of the campaign is engaging and interesting and makes the message accessible to all social groups. The simple style of the idea mirrors the simple pleasure of walking and amplifies the message. The almost childlike optimism of this route is disarming and counteracts the strong cynical response that could be received by TFL as author of the message.