Nick Knight chatted to photographer Steve Johnston about shooting punks on the Kings Road in the latest of our Punk: Photography interview series. The photograph, taken during a day of street casting, was part of a series commissioned by Terry Jones that would pioneer 'the straight up' style of photography that formed the basis of i-D magazine. In the candid phone call, Johnston reveals his process of capturing the personal style of the punks. 'In those days because money was tight, so I had to get it right. So if it was a roll of thirty six, there would be thirty six punks on that roll. As Terry Jones would testify.'