 We don't really have a strong understanding of the connection between the natural world and the origins of zoonotic diseases. I think this image does a particularly good job of engaging that grey and largely misunderstood area. We have an aging population across the world and we don't know yet how to tackle that. Maybe in the future our only companion would be robot. And so I think it speaks to how we are as a society developing. It's one of those stories that so many people do not know about around disability. Photography really had that ability to get us to have a bit more compassion around topics and issues that are complex. And the overall winner of The Wellcome Photographer Prize 2019 is a really beautiful photograph. I feel relaxed when I play with String, a picture of Liam taken by his sister Erin Lefebvre. It's the most powerful image I've seen in many, many years and speaks to us all about autism but beyond autism into what makes us all human. There's a real tangible aspect to it and there's a real relatability to the image and there's a tenderness to the image. I think that really is very, very moving. We have so little time in society these days for contemplation. Something as simple as playing with a string to come and to find some peace is actually, I thought, an insight. That image that has won spoke to me absolutely instantly the moment I saw it. It talks to me about what it takes to be happy, what it means to have ambition, what it is to have an illness, what is an illness, what's not an illness. To create something that becomes iconic and says something powerful, that's hard. But I actually genuinely believe that this winning image is that.