Condoms and banking may seem like strange bedfellows. But when we were asked to show how we might launch a new service - Durex Finance - to help young people be safer with money, it led to some of my favourite work. We created the concept of the Finance Doctor to help the inexperienced feel their way around this awkward subject online. And the use of one of music's greatest ever stars to tease and intrigue was a must. It all came together.