New time-lapse footage has been released showing the progress being made below the capital on Crossrail.
More than five and a half miles of underground tunnels have now been dug.
These pictures show the work that is being carried out at the sites of Finsbury Circus and the new Liverpool Street Station.
The first Crossrail trains are due to run in 2018.
More top news
Louise Gray spent £250,000 of her own compensation money before she 'betrayed' her son Adam and plundered his fund.
Rostam Notarki chased Charles Hickox out of the Cardinal Wolsey after the victim went to confront staff about a missing credit card.
The controversial proposal to flatten the village of Harmondsworth was given the green light today by the government's Airports Commission.