Colour print; electronic journey planner at Heathrow station, by Paul Proctor, 1977

Heathrow Central station was opened in 1977. The extension of the Piccadilly line was planned to serve the airport and partly funded by the British Airports Authority (BAA). BAA installed a series of wide subways connecting the concourse to all three of the terminal buildings. These included moving walkways, or 'travelators'. The station was equipped with closed circuit television and a public address system, and had special features to cater for foreign tourists. This picture shows two travellers using the electronic journey planner. This was an illuminated, computer-controlled machine showing the user how to reach any other Underground station. Instructions were given in English, French and German, but the machine was later withdrawn.