This week marks 150 years since the very first Tube journeys took place between Paddington and Farringdon on the Metropolitan Railway. At a time when people had no electricity in their homes, inside toilets were a rarity and radio and television did not yet exist the Tube was a revolutionary blast of modernism.
Hailo is an interesting business because drivers tell you that already 7,000 of the network of 23,000 cabs are using the service. But it's very much on their own terms. Want to pay cash for a cab in the middle of the day? A driver will pull up in two minutes. Want to pay by credit card in the evening the app often struggles to find a single taker.