Retail PhotoSensitive Therapy: The new H&M in Regent Street ( part of the redevelopment of the former Dickens and Jones.) has a huge wall of light, about 4 storeys high - which silhouettes the shoppers on the criss-crossing escalators, mixed in with the incarcerated manikins. It is an odd sensation looking at it - and it reminds me of metropolis, the connection and irony is probably deliberate.