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Construction News

07 August 2025

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Mace selected for £1.1bn British Library development

1 hour Mace has been appointed construction manager for the £1.1 billion new development of the British Library’s St Pancras site in London.

The British Library extension is designed by RSHP and Arup
The British Library extension is designed by RSHP and Arup

Mace has been appointed to lead the construction by British Library’s development partner SMBL, a subsidiary of Mitsui Fudosan of Japan.

Mace will join the project under the direction of development manager Stanhope and will contribute construction expertise for the procurement and delivery phase of the development.

The scheme includes a 100,000 sq ft (9,290 sq m) extension to the British Library comprising new spaces to enhance the library’s public service offer as well as more than 600,000 sq ft (55,742 sq m) of commercial facilities.  The project includes exhibition galleries, events spaces and learning facilities. 

It is designed by architects RSHP and engineers Arup.

Construction is expected to start on site in 2026 once detailed design is complete and planning conditions met.  The construction work is expected to take around six years to complete.

Mace Group chief executive Jason Millett, said: “We are delighted to be selected as Construction Manager for the British Library development proposals.  This is a high-profile project with international significance and Mace’s long-established expertise and track record in delivering other major schemes make us well placed for this role.”

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MPU

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