Mark Williams explores how the introduction of railways affected society. He rides in an old third-class carriage before travelling in style on the Orient Express.
Mark Williams explains how the race for speed during the 1920s and 1930s led to locomotives setting records that are still a match for modern rail travel.
Mark Williams gets to grips with the oldest subterranean train network in the world, London's Underground, and travels through an early tunnel under the Thames.
Mark Williams explores the introduction of diesel electric systems in 1953 and drives a Class 31 complete with hot plate, windscreen wiper and ashtrays.