"A key focus during 2019 has been finalising the stations, tunnels, portals and shafts".
It says that the central parts of the line - Custom House, Farringdon and Tottenham Court Station - will be opened "as soon as practically possible" in 2021.
TfL said http://pdf.reuters.com/htmlnews/htmlnews.asp?i=43059c3bf0e37541&u=urn:newsml:reuters.com:20191108:nRSH7803Sa it had been advised by Crossrail Limited that the opening of the central section of the Elizabeth line would not happen in 2020, as planned under a revised timetable.
The trains have been delivered and most of the new stations are close to completion, but work is ongoing on signalling software and train systems. "The Trial Running phase will begin at the earliest opportunity in 2020, this will be followed by testing of the operational railway to ensure it is safe and reliable".
The UK's Department for Transport said it is in discussions with Crossrail about how to fund the additional costs and the route would open as soon as practically possible.
Wild said he expected to provide Londoners with "further certainty" about when the line would open "early in 2020".
The latest projections now show a central cost forecast (including risk contingency) of approximately £15,363m, which is £400 million more than the funding committed under the exisiting Financing Package.
Originally due to open in December 2018, the railway is now severely over budget and its delayed opening is having a significant negative impact on Transport for London's already under pressure finances due to the loss of fares and commercial income.
And earlier this year, CRL set a new timeline for the project stating it would be completed by spring 2020 - only for this to be pushed back by the latest announcement.
Crossrail Ltd said there are four "major tasks" that must be completed before services can begin.
The news quickly sparked rows over who knew what and when and led to the downfall of Sir Terry Morgan from both the Crossrail project and HS2.
Mr Wild said he wants to "ensure reliability of the railway from day one of passenger service".
The Elizabeth Line will not run through central London until 2021 after further delays to the Crossrail project were announced.
"The delay creates huge issues for many businesses that have made investment decisions based on its original opening date of December 2018".