Driverless Tube trains will not be introduced for at least another 14 years and are unlikely to be in operation until the year 2030, according to an internal Transport for London document.
It had been assumed that driverless trains, which are commonplace on the Paris Metro, would be in operation in the early 2020s.
But a “New Tube for London” paper circulated to London Underground managers says it would be nearer the end of the next decade.