Five journeys into the control rooms at the heart of today's networked society to meet the invisible people co-ordinating our movement and the things we can't do without.
With urban historian Joe Kerr.Joe joins the staff at Centrecomm, the emergency command and control centre managing London's 8,000 buses, and hears their stories from the frontline - from missing pensioners to 7/7.
Joe joins the night shift in the control room of Group 4 Securicor's electronic tagging operation, and hears how this Manchester team feel about being Big Brother to more than 8,000 people.
Joe visits the Ordnance Survey's headquarters in Southampton, where he discovers that those in charge of the digital MasterMap know more about us than we think.
In a small office near Edinburgh, telephone operators keep a 24-hour watch on elderly and vulnerable people through state-of-the-art technology.
In the National Grid control room in Berkshire, staff tell Joe how many kettles will need filling after this week's EastEnders omnibus.