Beam me up, Mr Scott
This is BT's main satellite uplink station, by the banks of the Thames alongside the Woolwich ferry - where most of the TV and Telephone links beam out from London to the world.
The man in the corner is a security guard had just told me that I couldn't take photos from the road, where I was standing. "Why?" I asked "oh..." he said, "it will go badly for you". You know, I have to confess he was right - it's not a great photo - I hope you don't mind ;-)