It’s not every day you wake to the sound of unfamiliar voices in your house. This morning I discovered two police officers in mine, come to investigate – well, nothing as it turned out because as the officers later conceded, no crime had been committed. This episode serves to show how we citizens going about our lawful business are under constant surveillance, our identities, movements and whereabouts held on myriad files and databases increasingly managed by private – i.e….