Crossrail 'putting UK on back on infrastructure map'

Crossrail's 26 mile tunnel through London was completed this week.

Standing in orange, talking to the workers deep underground, David Cameron declared that the Crossrail project made him "dead proud" to be Prime Minister.

Newsnight's David Grossman asks if Britain can still boast of engineering prowess akin to the likes of Telford, Stephenson and Brunel.