Crossrail has released some more photos showing how the tunnels are being prepared to become the operational Elizabeth line. They show the track laying, the fitting of the curved wall plates in the huge central stations and some of the crossover junctions.

Half of the permanent track on the line has now been laid, and nearly all of the platform structures, which will give step-free access to the 200m long trains at all of the 10 new stations, have also been built.

Click on the photos for larger versions