In Manchester's Castlefield area, Tim discovers how viaducts still dominate the cityscape. In Reading, a railway station is transformed and ready for the commuter challenges of the 21st century.

Tim gets to grips with his local station - London Bridge, meeting the architects who turned this one-time Frankenstein's monster of a station into the bright, airy and tranquil modern terminus. At the National Railway Museum, Tim gets access to Borough Market Junction Signal Box.