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Keltbray is a leading specialist in the design and construction of structural solutions for some of the UK's most complex developments, with expertise spanning reinforced concrete, steel and hybrid structures.

Combining engineering excellence with extensive self-delivery capability, we deliver structural solutions that maximise efficiency, enhance buildability and provide certainty throughout the project lifecycle. From deep basements and core construction to complete structural frames and hybrid structures, our teams develop the safest, most cost-effective and sustainable approach.

Our involvement begins at the earliest stages of a project, offering pre-construction support, design development, value engineering and programme optimisation. By integrating these services with our wider enabling works, demolition, geotechnical and civil engineering capabilities, we create seamless project delivery that reduces risk and accelerates programmes.

We have extensive experience delivering complex basement and substructure works, top-down construction, self-climbing and slipform cores, post-tensioned concrete structures and hybrid solutions. This expertise enables us to meet the technical demands of challenging urban environments while maintaining the highest standards of safety, quality and performance.

Supported by our fleet of specialist equipment, including formwork systems, falsework, concrete pumps and tower cranes, we maintain full control over quality, programme and execution. This approach ensures greater control, programme certainty and consistently high standards of delivery.

Salisbury Square.  Keltbray site. London. UK. 9 May 2025 

Photo by Zute Lightfoot of behalf of Keltbray

What we deliver

  • Planning & Engineering

    Early-stage expertise that optimises delivery, value and buildability from the outset.

  • Basements & Substructures

    Specialist construction solutions for deep basements, excavation and complex substructures.

  • Concrete Frames

    Efficient reinforced concrete structures tailored to the demands of each development.

  • Core Construction

    Advanced core construction techniques that support safe and efficient project delivery.

  • Hybrid Solutions

    Hybrid approaches that enhance programme certainty and performance.

  • Specialist Concrete Solutions

    Innovative concrete applications designed to meet architectural and sustainability objectives.

Where we’ve delivered it

All structures projects

50 Fenchurch Street

Commercial City of London

Demolition · Piling · Structures · Specialist engineering services

Talk to the team

For all other enquiries & tenders please email tenders@keltbray.com

Send a structures brief →