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Commuters at train station

Innovation reduces carbon footprint on London’s transport infrastructure

A new station is being built at Paddington, alongside Brunel’s original building. Once complete, this busy terminus for local, regional and international passengers, will increase capacity and deliver a superior passenger experience, through the addition of a new station for the Elizabeth line and interchanges with National Rail and London Underground services.

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Joint venture with Skanska UK

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Complex project delivery

Key benefits


tonnes reduction of capital carbon in roof-slab


tonnes reduction in quarried material


tonnes of material diverted from landfill

Costain, in joint venture with Skanska, was awarded a contract to construct the Crossrail Paddington station. The new station is a key interchange with the existing National Rail services at Paddington Mainline station and with London Underground.

Through early collaboration with our customer and supply chain, our design team was able to change the concrete specification from one with 50 percent ground granulated blast slag [GGBS], to one with 72.5 percent content.


Increasing the GGBS content to such a high level represents an innovative, low- carbon solution. This has realised a number of benefits including a reduction of capital carbon in the roof-slab, which consists of 10,000m3 concrete and spans the entire length of Eastbourne Road Terrace [approximately 300 metres -long]. It has also reduced the amount of quarried material required and diverted 710 tonnes of material from landfill.

Contact and social


Ann-Marie Morrison, Client Director
01628 842 444
[email protected]