British Library Extension
Illustrative view of scheme from Midland Road
British Library Extension to start on site in 2026
On 19 March, Mitsui Fudosan Co., Ltd., a leading global real estate company headquartered in Tokyo, confirmed its commitment to the development of the British Library Extension, London, including significant new commercial spaces primarily targeting occupiers in the life sciences sector and extensive public access on land owned by the Library to the north of the existing Grade 1 building. The investment will be around £1.1billion. Stanhope Plc will be the development manager for the project.
Designed by leading international architects RSHP and engineers Arup, and set to be delivered by 2032, the proposals – granted permission by Camden Council in July 2024 – will create around 100,000 sq ft (9,290 sq m) of new Library spaces for culture, learning, research and business including expanded galleries and business support facilities. In addition, significant areas where people can circulate will link the new extension to the existing Library including a full-height foyer and new public entrances.
Along with the new Library spaces, some 600,000 sq ft (55,800 sq m) of commercial space will also be included, designed for scientific businesses seeking to locate close to the Francis Crick Institute, Alan Turing Institute and the rich mix of other organisations located in London’s Knowledge Quarter. The design will open up the Library across three sides and create new, publicly accessible areas and routes – internally and externally – connecting it to Somers Town and St Pancras.
Further information will be released in due course via the website and other channels, with the plan to keep the local community updated on progress.
Background
SMBL were selected by the British Library as their development partner to bring forward the plans for the site. SMBL have spent several years working with the British Library getting to know the Somers Town area and community leaders, resident groups, schools, and other organisations, and your views have helped inform our plans to make sure this project delivers for everyone in the local area.
The British Library is home to one of the most important collections of books, manuscripts, newspapers, maps and sound recordings in the world, which it opens up to spark new ideas and realise new possibilities for everyone.
Now, this once-in-a-generation transformation will extend the Library’s St Pancras site to make space for new inspiration, enabling more people than ever before to use and enjoy its collection and buildings, and help bring to life the Library’s Knowledge Matters vision.
The project to take this vision forward is a partnership between the British Library and SMBL Developments. The project team includes architects RSHP, engineers Arup, DSDHA (public realm) and planning consultants Newmark.
Illustrative view of British Library Foyer (looking south-west)
Story Garden
Since 2019 we’ve partnered with Global Generation to use our development site to create a garden for local people to plant and cook together.
The Story Garden is a direct response to the community’s wish for more green space – feedback that we’ve taken forward into our plans for the extension. So while the existing Story Garden will move at the end of September 2025 to enable construction to start in 2026, we plan to create new green spaces, including a community garden where we’ll continue to grow not only plants and produce but our connections and relationships with local people too.
You’ll find the Story Garden’s new permanent home just a few moments away on the other side of King’s Cross.
Illustrative view of the British Library Extension
The British Library Extension will provide a wide range of benefits for the local community. It will completely open up the British Library to the north-east and west. New publicly accessible spaces, and routes will be created to connect the Library to Somers Town and St Pancras.
The British Library Extension will also become a meeting place where everyone can visit and enjoy the Library and the new opportunities created, and the UK national centre for data science and artificial intelligence.
There are three main aims to this project:
1. Creating new spaces for the Library
We’ll create more capacity for Camden residents, visitors, school children, students, researchers, workers and businesses, with new spaces for exhibitions and events, and additional facilities for learning and business support.
We’ll also improve public spaces and connections to Somers Town, opening up the Library to those on its doorstep with new entrances which will be accessible from both Midland Road and Ossulston Street, and new green spaces outdoors for locals to enjoy.
2. Growing the Knowledge Quarter
This site is located at the heart of the Knowledge Quarter, one of the greatest concentrations of knowledge-based cultural and scientific businesses anywhere in the world.
A significant part of the extension will include space to be leased to those who want to work and collaborate with businesses and communities in the Knowledge Quarter, joining other research-based institutions near the Library, such as the Francis Crick Institute and The Alan Turing Institute.
3. Unlocking London’s largest transport hub
The site will support the future creation of a new underground station for Crossrail 2 by connecting Euston and St Pancras. This will mean that the area is the most important transport interchange in the UK.
The Library’s new spaces and the Station Works infrastructure for Crossrail 2 beneath the site, as well as other benefits of the scheme, will be funded by new commercial space (c. 55,800 sqm). This will also create more job opportunities within the area.
Illustrative view of the Foyer looking east towards Midland Road
Illustrative view of the courtyard
benefits Of the Project
9,290 sqm of new space for the British Library for culture, learning and business use
Opportunities for employment, training and skills development, both during construction and once the new spaces have opened
1,000 sqm of affordable workspaces, as well as incubator desks within the Library’s new business spaces with 10% available for free to local people
The establishment of the Somers Town Compact and appointment of a Compact manager to help create education and employment opportunities for local residents, as well as support for environmental projects
The Library will welcome more learners of all ages with new programmes and facilities to explore the collection, in particular increasing engagement with Camden schools
A £23 million payment to Camden Council to deliver a site in Somers Town for affordable housing (currently the site has permission for 35 private homes)
Payments towards pedestrian and environmental improvements including additional cycle docking and highways
A community garden on Ossulston Street co-designed and managed by the local community
Better connections, creating new north-south and east-west routes through the British Library site
A series of new, large public and civic spaces for all to enjoy
A sustainable building designed to reflect the vision of the UN Sustainable Development goals
New northern entrances to the Library on Midland Road and Ossulston Street
Get in Touch
Let us know any feedback or any questions and a member of the project team will get back to you:
blextension@londoncommunications.co.uk
