Dr Julian Lewis: I am delighted that my hon. Friend [Jeremy Hunt] has drawn attention to that matter. I know that the photographic industry is terribly concerned that there is no way in which a photograph on the internet can be protected from having its provenance removed. It seems that there is a culture of, "Use it now and pay later – if you're found out." That will deter photographic agencies from putting their data on the internet in the first place.