 We had a lot of heated discussions about what the implications of these photographs are and certainly there were many photographs that could have occupied this space. A lot of the images are presenting to us hugely important aspects of health and medicine around the world. What really works is a story either about the state of humankind, the state of our planet, the wonders hidden underneath our skin. Looking through these incredible bodies of work, there's something that will move you emotionally, but also have a visual language which is complex and refined and sophisticated. So I look at what's the power of the image and then what's the story? What is it trying to tell us? And does it want me to come back and look again? I think that we've seen both in technique and subject selection innovative approaches that break from tradition in exciting ways.