https://www.bbc.co.uk/programmes/m0019txm BBC's "Inside the factory" sees Masterchef's former grocer Gregg Wallace go to various factories across Europe to see how things are made. This week Gregg visits the Alsthom factory in Derby to see how their new trains are made and tested Ruth Goodman looks into a brief history of electric trains in the UK Could be interesting... (will be available on iPlayer for 52 weeks after broadcast, UK only on BBC and iPlayer, may be available in other territories via different channels)