This should start at the right point to see Prue. There’s an introduction you can watch by going back a bit in the video.
https://youtu.be/Pcf4R1kzYiQ?t=787
Prue was with Mary Quant and Vidal Sassoon from the very beginning, and it’s a shame she wasn’t given an opportunity to talk about those days at the start of Swinging London.