IT on the London Underground: Podcast interview with Adrian Davey of Tube Lines Millions of passengers rely on the London Underground every day. It is one of busiest subways in the world and technology plays a crucial role in keeping people moving. In this podcast Cliff Saran speaks to Adrian Davey, head of IT at Tube Lines, the company which manages the Northern, Jubilee and Piccadilly Lines on the London Underground to find out how Tube Lines uses cutting edge technology to keep everything running smoothly.