Question to the Department for Transport:

To ask Her Majesty's Government what is their latest estimate of the overall cost of the Crossrail project; what is the cost attributed to Network Rail; and what is the latest estimate of its economic benefit.

The latest estimate of the overall cost for completing Crossrail is £18.9 billion. This includes Network Rail on Network Works at a total estimate cost of £3.0 billion.

Analysis in the 2010 Business Case stated that the Crossrail programme will add an estimated £42 billion to the UK economy. This is a forecast and will be assessed in planned work to evaluate the impact of Crossrail post opening on 24 May 2022.