Raphael Güller is the co-founder and chief product officer of Sweep, and one of the inspirational leaders who UBS supports and celebrates through its Global Visionaries programme. Raphael is joined at Monocle’s HQ in Zürich by Tom Hall, global head of social impact at UBS, to discuss Sweep’s origin story, its involvement in this year’s UBS Pitch for Purpose event, and why it is important for UBS to champion organisations such as Sweep, which are driving solutions to the great challenges of the day.