In the 1850s, wagons from northern England dropped eight million tonnes of coal every year, to be loaded on to horse-drawn carts and carried across London to power the city. Now after a history of increasing decay, architect Thomas Heatherwick has transformed the sheds into a shopping and cultural centre by linking the two long Victorian brick and cast-iron sheds with two "kissing" roofs that just seem to touch. The roof area is not yet open but will give great views over London. I played around with double exposure and window reflections. I also took sequences of students arriving at St Martin's College and stacked these.