Taking a walk down a Crossrail tunnel
Crossrail will carry an estimated 200 million passengers a year and cost nearly £15bn.
The Elizabeth Line service will run as far west as Reading in Berkshire and east as Shenfield in Essex.
BBC London's transport correspondent Tom Edwards walked down the a key part of the line - the tunnel in central London between Bond Street and Tottenham Court Road.
15 Nov 2017
- From the section London