Published by OneSwitch.org.uk Wednesday, 9 December 2015 8:00 pm.
Prestel: What the internet was like for (rich) people in the UK in 1979 thanks to the GPO / British Telecom. Love the Teletext style graphics. Remember my uncle was going to sell these as a new career. The Usborne Book of the Future was becoming a reality in front of my eyes. We never got a Prestel set-up though. Hugely expensive.
More at the BBC and Viewdata.org.uk. Found via Dan Farrimond.