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Unlocking Possibilities, Uniting Expertise.

Structural Engineering Alliance Group (SEAG) is a collaborative network of leading Consulting Engineering firms, each skilled in their own field, united to advance the industry.
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Meet our founding members

SEAG is a dynamic alliance of leading engineering firms, committed to delivering innovative solutions in the construction industry.

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JMS Group

JMS Group was established in 1997, providing civil and structural consulting engineering services across East Anglia and nationwide. JMS ensures projects are built, regardless of size, scope and complexity.

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RISE Design Engineering and Consultancy Limited

RISE Design Engineering and Consultancy Limited, London's leading provider of civil and structural design for residential and commercial projects. RISE offer services in new builds, restorations, basement and loft conversions, all aimed at creating sustainable, efficient environments.

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Shaw Consulting Engineers

Shaw Consulting Engineers: your partner in structural engineering excellence. We are constantly exploring new and innovative ways to approach complex projects, using the latest technology and cutting-edge techniques to achieve bespoke structural analyses and designs.

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MJ Consulting Engineers

MJC are Event Engineers specialising in theatres and temporary structures for live entertainment. Founded in 1996, MJC has an enviable track record for providing structural engineering support to the live entertainment industry.

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Gaurya Consulting Structural Engineers

Gaurya deliver a high quality, reliable and professional service offering innovative and practical design solutions for clients. Gaurya offer; structural analysis, foundation analysis and design, basement design, underpinning design, reinforced concrete detailing and structural surveys of existing buildings.

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GC Robertson & Associates

GC Robertson & Associates was founded in 1974. With a longstanding reputation for delivering exceptional structural engineering advice and solutions, specialising in heritage building refurbishments and bespoke residential projects, GCR has become a trusted partner for clients.

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JRG Consultant Engineers

JRG Consultant Engineers is a Structural Engineering Consultancy covering London and the South of England. Drawing from years of experience in a wide range of construction projects, in both the residential and commercial sectors. JRG Consultant Engineers provide efficient, robust and innovative structural engineering solutions.

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Meet our strategic members

At SEAG we redefine excellence through collaboration, innovation, and unparalleled expertise.

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Beam Designs

Beam Designs offers structural calculations suitable for Building Regulation submission for: Steel Beam Design, Timber Beam Design, Beam Calculations, Retaining Walls, Foundations, Steel Calculations, Concrete Beams and Raft Foundation Design.

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Drain Divert

Drain Divert provides clients with advice for drainage diversions, build-overs and sewer connections. Drain Divert can help to navigate relevant applications for your project.

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Loft Designs

Loft Designs provide structural calculations for your loft conversion project. Loft Designs expert team of structural engineers are committed to delivering bespoke loft conversion solutions that meet the specific needs of each client.

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Sub Structural

Sub Structural are basement conversion design specialists with over 25 years' experience. With expertise in both civil and structural engineering, Sub Structural specialise in ground-breaking and luxury basement conversions across London and the surrounding areas.

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SuDS Designs

SuDS Designs specialise in Sustainable Drainage Solutions, Flood Risk Assessments, Drainage Strategies, Surface Water and Flood Modelling. SuDS Designs offer a nationwide service. 

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Interested in becoming a member?

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