100 New Bridge Street

100 New Bridge Street

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Project at a glance

Reimagining engineering excellence in historic London  

100 New Bridge Street is a flagship commercial refurbishment in the heart of London, transforming a 1990s office building into 394,000 sq ft of Grade A workspace, 3,592 sq ft of retail, and a 4,000 sq ft landscaped terrace with panoramic views of St Paul’s Cathedral. SES is proud to have delivered the full MEP scope for both shell and core and CAT A fit-out, in partnership with Mace and Helical.  

This high-profile scheme exemplifies how sustainable innovation and modern methods of construction can redefine commercial performance. By retaining much of the original structure, the project significantly reduces embodied carbon while preserving architectural continuity with its historic surroundings.  

Achieving practical completion in May 2026, the development now stands as a reimagined, future-ready workspace on New Bridge Street.

Offsite manufacturing leadership  

SES delivered one of the highest levels of prefabrication ever undertaken on a Mace refurbishment project in the UK. Leveraging our dedicated offsite manufacturing facilities and trusted supply chain, we developed a solution that enhances quality, safety, and programme efficiency.

Each prefabricated component was designed and assembled offsite, ensuring consistency, minimising waste, and significantly reducing on-site labour and disruption.

Delivered by SES Manufacturing, this included:
• 6 fully prefabricated risers
• 3 pump skid assemblies
• 10 rooftop pipework modules
• 1 prefabricated rooftop plant room

In addition, a further 5 prefabricated risers were delivered by our ductwork contractor.

A standout achievement was the complex weekend road closure of New Bridge Street, a key route into Blackfriars Bridge. Coordinated with Transport for London and the Metropolitan Police, the team safely lifted two 14-tonne ASHPs and the plant room into position on the roof, 10 storeys high – executed flawlessly in a busy central London setting.   

Technical highlights:

Sustainability in action  

Smart, sustainable outcomes  

Targeting:  

Collaborative delivery  

SES’s integrated approach with Mace and the wider supply chain ensures enhanced quality, safety, and programme efficiency – all while minimising disruption in a dense urban environment.  

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