At the Southbank I photographed a man who, after eating a sandwich, stretched out on a bench for 40 winks. Moments later I was in Tate Modern where I drank a coffee, looked at art and admired the view. Then I remembered Ai Weiwei currently detained at the Chinese government’s behest precisely because he is the sort of a man who might eat a sandwich and enjoy an unscheduled snooze (or whatever he fancied) and think to hell with it. I knew Tate Modern had put up a sign to promote Ai Weiwei’s release from imprisonment, but where was it? Finally I found it at the top of this iconic building. I can only add a small voice to the clamour for his freedom and that of others in China who are free spirits and have something to say for themselves.