'In documentaries, the limits of your storytelling are largely set by where you point the camera. I learned to parcel up what I saw and heard into units of story.'

In documentaries, the limits of your storytelling are largely set by where you point the camera. I had a tough boss who told me, bluntly, ‘If you haven’t shot it, Polly, you haven’t got it.’ I learned how to parcel up what I saw and heard into units of story.