Steel Erection
Steel erection by our own directly employed, CSCS-carded crews, working to your drawings or to steelwork we design and fabricate ourselves.

















What we deliver.
Putting up a steel frame safely and to programme is its own discipline. We erect with our own directly employed, CSCS-carded crews and our own access plant, with lift plans written in-house by our Appointed Person rather than handed to the crane-hire contact. The crew that arrives on site is the crew we employ, every time.
Primary frames, secondary steelwork, mezzanines, plant decks, walkways and portal-frame buildings, erected to your engineer's drawings or to steelwork we design and fabricate ourselves to BS EN 1090 Execution Class 2. As an example, the 40-tonne walkway we lifted into a tight-access Leeds site by tower crane, through access that made mobile craneage very difficult, is a project we are really proud of. Method statements, RAMS and a 12-month defect liability period come as standard, with our team on hand after handover.
What we make.
Every project follows the same certified workflow - so you get the same outcome whether we're making one beam or a thousand.
Directly employed erection crews
CSCS-carded steel erectors on our own books, not agency labour. The same crews, job to job, who know how our fabrication goes together and how to keep a site safe and moving.
In-house lift planning
Lift plans written in-house by our Appointed Person, by someone who knows how things work on the ground, the same team who planned the 40-tonne tower-crane lift in Leeds through access that made mobile craneage very difficult.
Our own access plant
Our own MEWPs and access equipment, so erection is not held up waiting on hired plant. Telehandlers, scissor and boom access matched to the structure and the site.
To your design or ours
We erect to your engineer's drawings, or take a package from connection design and fabrication through to a signed-off frame, all to BS EN 1090 Execution Class 2.
Safety and documentation
Method statements, RAMS, lift plans and as-built records as standard. CSCS crews, a 12-month defect liability period and our team on hand after handover.
Craftsmanship. Accountability. No shortcuts.
No subcontracted welders. No outsourced site crews. Every project from 3D model to final torque-check is handled by a certified UIS team from our Rotherham facility.
Request a quote
Project & sample images.
← Drag / swipe to browse · click to expand →
Four reasons we stay on your shortlist.
The same four reasons come up whether you're a tier-one contractor, architect or self-builder.
About UIS-
01
Accreditations & compliance
BS EN 1090 Execution Class 2. CHAS Elite, Alcumus SafeContractor, ISO 9001. Every project ships with a full QA pack.
-
02
Experience & capabilities
Thirty years, 1,200+ projects. Drawing board to torque-check happens in-house - no split accountability.
-
03
People & values
CSCS operatives. Coded welders. Chartered draughtsmen. A family firm that treats your project like their own.
-
04
Innovation & sustainability
Tekla 3D modelling. Automated welding cells. GRP composite solutions where steel isn't the right answer.
"I've worked with UIS for several years on some high profile and very complex projects. Their attitude and work ethic are second to none - providing high quality services and products which are delivered safely and on time every time. Overall they are a pleasure to do business with and wouldn't hesitate recommending UIS for any steelwork or metalwork packages."
Questions clients ask us.
Yes. We erect to your engineer's drawings and to other fabricators' steel, as well as steelwork we design and fabricate ourselves. Either way, the crew on site is directly employed by us.
Yes. Our steel erectors are CSCS-carded and on our own books, not agency labour. The same crews work job to job, so accountability and site safety stay with one team.
We do, in-house. Our Appointed Person writes the lift plans rather than passing it to the crane-hire contact, which is how we managed the 40-tonne tower-crane lift in Leeds through tight access.
Steelwork is erected to BS EN 1090 Execution Class 2, with method statements, RAMS and lift plans on every job. A full set of records and a 12-month defect liability period come with handover.
Yes. Our crews travel from our Rotherham base across England, Scotland and Wales. The job is scoped and priced around your site and programme, with the same directly employed team wherever the work is.
Recent project deep-dives.
Reclaimed Structural Steelwork Project London November 2025
Our mild steel workshop has been busy this week fabricating and welding the structural steelwork for a unique project we have on down in Lon...
Read case study →
Stainless Steel Powder Coated Handrails with LED Lighting December 2025
Another successful project completed and handed over! ✅ 😘 Our client requested ourselves to supply and install the stainless steel p...
Read case study →
Large Steel Construction and Erection Project London December 2025
We are proud to share that our team has successfully completed and installed another high-quality steelwork package right in the heart of Lo...
Read case study →Steel Erection across the UK.
We design, fabricate and install UK-wide. Explore our local coverage below.