My Picture Post series is made up of contemporary photographs along with scans of negatives I took in the 1960s, 70s and 80s. I am constantly amazed by how seeing an old photograph again after decades hidden in a negative album, can somehow recreate a day, a walk, a feeling of place. It is like when you leave a DVD recording in pause mode and forget about it, only to be amazed later by its ability to start up again as if nothing has happened. I could still take you to the exact spot in Sheffield where I took this photograph some thirty years ago. The buildings - that Mondrian of concrete - are long gone, the DVD has moved on. But for a few moments after seeing the scanned image, I am in replay mode.