
Key takeaways
£1.1bn
landmark development investment
170m+
collection items spanning 3,000 years of human history housed
600,000
sq ft of new science, innovation and commercial space created
Home to more than 170 million collection items, the British Library safeguards one of the world's greatest repositories of knowledge for everyone to use and explore. Its living collection spans more than 3,000 years of human history and includes every new digital and printed publication in the UK. As the national library and a cornerstone of London's Knowledge Quarter, it preserves the UK’s published record while supporting future generations of researchers, learners and innovators.
Appointed as Construction Manager, we are supporting the British Library and Mitsui Fudosan UK (SMBL) team to deliver this £1.1 billion extension. Expanding the St Pancras campus, the project will create new galleries, learning facilities and event spaces while opening up the Library to new audiences. Alongside 100,000 sq ft of new library space, the development will provide 600,000 sq ft of commercial science, innovation and knowledge-led workspace, reinforcing London's position as one of the world's leading centres for research and discovery.
Delivering an extension of this scale requires navigating one of London's most logistically complex environments. Surrounded by national and international rail stations, intersected by underground rail infrastructure and bordering one of the capital's busiest transport corridors, the site presents a unique construction challenge.
Early engagement with transport operators, neighbouring institutions and key stakeholders has helped shape a delivery strategy focused on maintaining critical operations while creating programme certainty. Within such a heavily congested environment, reducing the impact of construction is equally important and a top priority. Through circular economy principles, material reuse and a production-led approach that maximises opportunities for offsite assembly, the team is reducing embodied carbon and improving resource efficiency. These measures also help increase productivity, improve buildability, accelerate programme and minimise disruption throughout the project lifecycle.
Beyond the building itself, the extension will create lasting benefits for the communities around it. The wider development includes a £23 million contribution towards affordable housing in Somers Town. New entrances, pedestrianised public spaces and a community garden will also open up the site, creating stronger connections between the Library and the surrounding areas. Working closely with Camden Council and local partners, a key focus is to ensure local people benefit from the project's success through employment, apprenticeship and skills opportunities, with a number of apprentices already recruited from the local community.
The combined investment in people, places and skills enables an impact and legacy that extends far beyond the site boundary. We're proud to contribute to this wider ambition, ensuring the benefits of the development continue to be felt for generations to come.











