As part of the Northern line extension to Battersea, two new ventilation shafts are required, and the design for one of the them has been revealed for public comment.
A new map showing the route for the Elizabeth line (nee Crossrail) has been released as TfL also announces an increase in the number of off-peak services that it will be offering.
The future Elizabeth line, which was already due to call at Heathrow Airport's Terminals 2 and 4 from next May, is to add Terminal 5 to the list, but not until December 2019.
The hugely overcrowded Holborn tube station is set for a major upgrade, to ease congestion, especially for people who use it to swap between the Central and Piccadilly lines.
