A dynamic London based structural engineering & design practice focused on quality and structurally challenging projects, big and small. We are experienced chartered engineers & structural engineers, who add value to projects by designing well detailed and efficient structures.

Structural Engineers, London

Mike Davies & Andy Simpson



Framework House, by @amosgoldreich, is shortlisted for a British Homes Award. It’s a beautiful and clever extension to a family home, with the exposed timber structure providing additional storage space.

More details: bit.ly/3Ef2iUp

Image: Ollie Hammick

3 days ago

Meet Joe!

Joe is one of our structural engineers and joined us in late 2019. He’s passionate about sustainable design and aims to produce low embodied carbon schemes wherever possible. Outside of work, Joe is a keen runner and climber. Here he gives us an insight into one of his unique projects – Brighton Road. It’s a…

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Meet our team!

Hi there! I’m Gem, Communications Manager at SD Structures. I’ve only recently joined SD, but I’ve been a comms professional for over 14 years. I love my job – a lot! And, I love working with engineers. They’re smart, and always humble about their achievements. Engineers play a crucial role in the design of buildings…

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This isn’t your typical residential extension. Check out that cantilever! The steel is supporting the existing double-storey outrigger and will support glazing to the roof and rear at ground level. #SiteProgress #SDonSite #Cantilever #SteelBeams #EngineerLife #StructuralEngineer

2 months ago

Butterfly Walk receives planning permission!

Planning permission has been granted! We’ve been working closely with John McAslan + Partners and Rolfe Judd Planning on the redevelopment, refurbishment and extension of Butterfly Walk Shopping Centre in Camberwell. We’re really pleased to hear that our plans have been given the green light. This exciting project will deliver new and improved public realm, retail spaces, a hotel,…

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SD Structures Appointed to Design 450 New Central London Homes

We are extremely proud to be working with a great team to deliver this ambitious scheme for the London Borough of Tower Hamlets in collaboration with PRP Architects. 450 New Central London homes encapsulated in new public green spaces. At the heart of the development has been ambitious phasing to provide new homes for the existing…

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Aynhoe Park House Featured in AJ

SD’s Structural design at the remarkable, Grade II Listed, Aynhoe House is set for construction. Take a closer look at some great images of DeDraftLondon design featured in AJ. http://bit.ly/AynhoeAJ Fantastic CGIs by Darcstudio

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Dartmouth Park garden studio We are developing the structure for this garden studio with

The studio will be clad in slim bricks and have an irregular sloping green roof. Construction starts this month.

2 months ago

Having now worked on numerous projects together with SD, it is their ability to provide innovative and well-considered engineering solutions that set them apart. Importantly they approach every project as a collaboration with a desire to maintain the architectural aesthetic while providing responsive and cost-effective structural solutions.

Grant Straghan - Director - DeDraft
Project : AYN 3, Oxfordshire See All Testimonials

Andy, Mike, and the SD team are a trusted design partner of ours who have consistently helped inform & solve many complex engineering problems, providing a reassurance presence throughout the project stages.

Dale Newton - Director - Smith & Newton Architects
Project : Yoda House See All Testimonials

The work that SD produced in the pre-construction and budget phase was invaluable. The detailed 3D modelling enabled us to look at how much of the building would be saved and the structural requirements in achieving the concept design. As a client we have been very demanding but SD have continued to support the scheme and deliver solutions to all our requests.


Jason Richardson - Private Client - Seabreeze Lodge
Project : Seabreeze Lodge See All Testimonials

SD structures are a pleasure to work with and make a great contribution to the design team. They make the process of coordinating the structural and architectural strategies very simple. Collaborating through Revit granted us invaluable foresight, while their keenness throughout the process to tailor the structural solution to the client’s priorities was of critical benefit in ensuring design quality.

Oliver Cooke - Director - Cooke Fawcett Architects
Project : Godwin Road See All Testimonials

We enjoyed working with Mike on the Tate St Ives Project because of his appreciation of good design and attention to detail. Since setting up SD Structures, we asked Mike and his team to help us with a residential warehouse conversion project. The structure was thoughtfully developed; utilising cantilevered steels, hangers and transfers structures, without comprise to the architecture.

Jamie Fobert - Director - Jamie Fobert Architects
Project : Laundry House See All Testimonials