Steel Fabrication & Installation in London & the South East
We’re a skilled in-house team of steel fabricators and installers who love turning steel into structures that perform. Whether they’re commercial, residential or industrial projects, we build everything to the highest standards – including full UKCA BS EN 1090 Class 3 certification.
We hold Achilles Network Silver Plus, Constructionline Gold and ISO 9001 accreditations, so you know quality, compliance and reliability are baked into everything we do. We work with trusted suppliers and the latest technology to deliver precise, safe, and dependable results every single time. From big landmark projects like Triton Square in Euston, the London School of Economics, Blackhorse Road Tube Station, 155 Bishopsgate, and Aviva’s Fenchurch Street office, right down to beautiful bespoke pieces – architectural fences, automated gates, pergolas, fire pits and more – we deliver it all. Our promise is simple: we get it right first time, on time and on budget because at Assesmont, turn-around counts.
Selected Recent Major Assesmont News
Structural Steel Modification & Beam Strengthening, SW1
Jul 28, 2026
Precision welding and steel beam alterations completed safely within confined overhead work areas.
Belgrave House, Victoria – Roof Plant Steelwork
Jun 30, 2026
Complete rooftop steel frames delivered ready‑to‑install for major London project.
Staircase Installation & Structural Alterations, Kings Langley
Aug 12, 2026
Complete structural alterations and installation of two custom steel staircases and balustrades.
Major Assesmont Steel Fabrication & Installation Projects
We are proud to be offsetting our carbon footprint annually for the second year by 210 tonnes of CO2e through 58 planted trees at Bank Woods, Nidderdale in North Yorkshire
Sustainability
Steel & Aluminium Products & Services
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Architectural steelwork
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Structural steelwork
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Structural design
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Site surveys
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In-house 3D modelling
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Steel erection
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Onsite fitting
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Fabrication & welding
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Onsite repairs
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Bespoke metalwork solutions
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Access steelwork
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Soffits and fascias
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Steel cladding
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Maintenance, surveying, reports
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Steel stockholder
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Rectification works
Steel Fabrication & Installation Experts
We specialise in the expert fabrication and installation of high-quality steel structures for commercial, residential and industrial projects across the UK.
Our commitment to excellence means every project is delivered to the highest standards – fully compliant with UKCA and BS EN 1090 up to Execution Class 3, the recognised benchmark for structural steelwork.
We are proud holders of Constructionline Gold, Achilles Network Silver Plus and ISO 9001 accreditations. These certifications demonstrate our ongoing dedication to quality, safety, compliance and best practice in everything we do.
By partnering with trusted suppliers and leveraging cutting-edge technology and skilled craftsmanship, we deliver precise, reliable and safe steelwork solutions – on time and to the highest standards – for every project we undertake.
Design & Engineering
Our team of experts specialises in the design and engineering of steel structures to ensure that they meet the required load-bearing capacities and other safety standards.
Design & Engineering
We use a variety of industry leading 3D modelling and CAD software to bring our clients’ visions to life and to ensure that their structural steelwork projects are completed to the highest standards.
Fabrication
At Assesmont Group Ltd, we handle the manufacture and assembly of steel components that make up a structure, such as beams, columns, trusses and braces.
Fabrication
Our skilled in-house fabricators use the latest equipment and techniques to ensure that every component is produced to the highest level of quality and accuracy.
Erection & Installation
Our experienced team handles the placement and attachment of fabricated steel components to create a complete structure.
Erection & Installation
Erection and installation require skilled labour, specialised equipment and strict adherence to safety regulations. At Assesmont Group Ltd we ensure that every project is completed safely and efficiently.
Consulting, Surveying & Reporting
We also offer expert advice and guidance on steelwork projects, such as feasibility studies, cost estimates, and risk assessments.
Consulting, Surveying & Reporting
We can also assist with surveying and reporting to help our clients make informed decisions about their steelwork projects.
Our Process - 4 Simple Steps
Step 1 - Consultation
We conduct an in-depth consultation to understand your needs, preferences, and vision. This helps us create a clear plan based on your input, whether it’s a detailed brief or a simple sketch, ensuring we align with your desired outcome.
Step 2 – Design
Using advanced 3D modelling and CAD software, we create a detailed model for review and feedback. After incorporating changes, we perform structural checks, produce site and yard drawings, and finalise fabrication plans once approved.
Step 3 – Fabrication
Our skilled team employs cutting-edge welding and machining techniques to fabricate your project. We handle steel, stainless steel, and aluminium fabrication in our Wickford factory, with on-site metalwork and mobile welding available as needed.
