Cairnhill Structures
Cairnhill Structures is a Scotland-based specialist structural steel fabricator serving defence, nuclear, bridge, rail, marine, and construction clients across the UK, with Execution Class 4 certification and tier-1 contractor relationships.
- Company typePrivate
- Founded1971
- HeadquartersCoatbridge, United Kingdom
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Cairnhill Structures does
Cairnhill Structures Limited is a UK-based specialist structural steel fabricator headquartered at the 200,000 sq ft Sun Works facility in Coatbridge, Scotland, with a secondary manufacturing site in Renfrew. The company designs, fabricates, surface-treats, and installs complex structural steelwork for clients in defence, nuclear power, bridges and infrastructure, transport and rail, marine, petrochemical, and commercial construction. Its technical offering spans CNC machining, precision welding to ISO 3834, BS EN 1090-2 Execution Class 4 (the highest achievable class), in-house metrology, digital surveying via the C-Met Division using FARO LiDAR scanners, and Steel Framing Systems (SFS) for residential and commercial builds.
The company operates a project-based B2B revenue model, winning lump-sum subcontract packages typically ranging from £750k to £4m+ through competitive tendering and direct relationships with tier-1 main contractors and end clients including Balfour Beatty, Spencer Group, Morgan Sindall, Graham, BYLOR, Malin Group, John Crane, and EDF. Recent landmark engagements include the £4m Hinkley Point C fixed point frames, £3.6m Forth Road Bridge truss end link replacement, £2.5m HMNB Faslane floating pontoons, Ukrainian bridge reconstruction, and an approximately 150-tonne HS2 footbridge. Cairnhill is a subsidiary of Watson Towers Group, a diversified industrial conglomerate.
Underlying differentiators include multi-sector certification (ISO 9001, ISO 14001, BCSA-RQSC for buildings and bridgeworks, Constructionline Gold, Armed Forces Covenant signatory), over 55 years of operating history since founding in 1971, and recent capability expansion via the January 2025 acquisition of Clyde Corrosion Control's assets (adding shot blasting, painting, inspection, and repair) and the May 2026 launch of drone surveying within the C-Met Division.
Cairnhill Structures firmographics
Firmographics- Name
- Cairnhill Structures
- Legal name
- Cairnhill Structures Limited
- Website
- https://cairnhillstructures.co.uk
- Company type
- Private
- Founded year
- 1971
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Cairnhill Structures is a Scotland-based specialist structural steel fabricator serving defence, nuclear, bridge, rail, marine, and construction clients across the UK, with Execution Class 4 certification and tier-1 contractor relationships.
- Ownership category
- akta.pro rank
Cairnhill Structures industry classification
Industry- Product category
- Structural Steel Fabrication
- NAICS
- Fabricated Structural Metal Manufacturing (332312), Plate Work and Fabricated Structural Product Manufacturing (33231), Prefabricated Metal Building and Component Manufacturing (332311)
- SIC
- Fabricated Structural Metal Products (3440), Prefabricated Metal Buildings & Components (3448)
- akta.pro primary industry
- Structural Steel Fabrication (IMADACAA)
- akta.pro secondary industries
- Steel Plate, Sections & Welded Assemblies (IMADACAD), Bridge & Infrastructure Steel Components (IMADACAL)
Keywords
Where Cairnhill Structures is headquartered
LocationHeadquarters
- HQ city
- Coatbridge
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
Cairnhill Structures business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales, Technology or R&D
Revenue model
- Structural Steel Fabrication and Installation: Project-based revenue from design, fabrication, surface treatment, and installation of structural steel for infrastructure, defence, nuclear, marine, and construction projects. Revenue generated through lump-sum contracts with main contractors and direct clients, typically ranging from £750k to £4m per project.
- Steel Framing Systems (SFS): Design, supply, and installation of light gauge steel framing systems for residential and commercial construction projects, delivered as subcontract packages to main contractors.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Cairnhill Structures product offering
Product offeringCore offering
Cairnhill Structures designs, fabricates, surface-treats, and installs structural steelwork for major infrastructure, defence, nuclear, marine, rail, and construction projects. The company delivers subcontract steel packages ranging from approximately £745k to £4m+ for tier-1 contractors and direct end clients, supported by Execution Class 4 (BS EN 1090-2) certification and in-house metrology/digital surveying (C-Met Division). It also supplies Steel Framing Systems (SFS) for residential and commercial construction projects.
Product overview
Cairnhill Structures is a specialist structural steel fabrication company operating from Sun Works in Coatbridge, Scotland, with facilities in Renfrew. The company offers a comprehensive portfolio of steel solutions organized around core fabrication capabilities (Quality Control Grade 1, Execution Class 4, CNC Machining, Surface Coatings) and specialized divisions including the C-Met Division for metrology/drone surveying and a Framing Division for Steel Framing Systems. Their product offerings span bridge fabrication and installation, marine structures (pontoons, catamarans, fender systems), nuclear components (Fixed Point Sleeves, Dragon Shield Doors for decommissioning), petrochemical equipment (high-pressure test bunkers, storage tanks), and rail/transport infrastructure (signal gantries). The company serves multiple sectors including Oil & Gas, Subsea & Offshore, Transport & Rail, Bridges & Infrastructure, High Security, Nuclear Power, Steel Framing, Metalwork, Storage Tanks & Petrochemical, and Marine & Renewables.
Differentiator
Problem solved
Functional benefit
Brands
- C-Met Division: Specialist metrology and inspection division offering digital surveying, 3D scanning, and drone capability services.
Products and services
- Structural Steel Fabrication and Installation
Quantifiable outcome
- Successfully completed 66 individual welding repairs on Avonmouth Bridge delivered under budget and on time
- +3 more outcomes
Companies that use Cairnhill Structures
Customer profileNamed customers13 records
Segments7 records
Ideal customer profiles5 records
Cairnhill Structures technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Cairnhill Structures partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core.
- Dogus UKcoreAppointed by Dogus UK to supply and manufacture steel girder beams for bridge replacement projects in Kyiv and Vyshhorod regions of Ukraine. Cairnhill performed stud welding and applied protective surface coatings for bridges destroyed during the conflict.
- Malin GroupcoreContracted by Malin Group to fabricate, surface treat, pressure test, assemble, and deliver 4nr 60-tonne replacement catamarans for HMNB Clyde, Faslane, supporting MOD sea-level operations.
- Graham Constructioncore£2.5 million contract for supply, fabrication, testing, delivery, and installation of four floating pontoons for HMNB Faslane floating quay.
- Balfour BeattycoreMultiple project engagements including £1.5m Regent Street Flyover refurbishment and £745k Otley Bridge footbridge, providing complete structural steelwork solutions.
- BYLOR (Bouygues Travaux Publics & Laing O'Rourke JV)coreContracted to fabricate, weld, paint, and deliver four Fixed Point Sleeves for Hinkley Point C nuclear power station as part of main civil engineering works.
- John CranecoreAppointed to design, engineer, manufacture, and install ten bespoke steel high-pressure test bunkers for petrochemical operations.
- Spencer GroupcoreAwarded £3.6m, 3-year contract to design, fabricate, and install truss end links for Forth Road Bridge restoration following structural fracture.
- Sellafield Ltd / SMFDT / Cavendish NuclearcoreMultiple project scopes within Sellafield nuclear site including SMF (Silo Maintenance Facility) and MSCF (Main Site Command Facility) projects, with £1.6m total value scope.
- Morgan Sindall / JacobscoreDelivered 26-tonne signal gantry for Glasgow Queen Street Station as part of Edinburgh-Glasgow Improvement Project (EGIP).
- BYLOR for DRAGON nuclear decommissioningcoreContracted to design, fabricate, test, and deliver five Dragon Shield Doors for DRAGON nuclear decommissioning site in Dorset, valued at £1m with additional £600k for onsite installation.
- EDF / Laing O'Rourke / Bouygues Construction / Balfour BeattycoreAwarded initial packages for Sizewell C nuclear power station preparation, working with the Civil Works Alliance and EDF.
- HS2 (High Speed 2)coreSecured contract for fabrication and shotblasting of integral weathering steel footbridge, approximately 150 tonnes, for HS2 project at Newton Purcell.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
Cairnhill Structures competitors and assessment
Company assessmentDirect peers
- Adey Steel Ltd: UK structural steel fabricator of comparable size operating across bridges, commercial buildings, and industrial fabrication. Overlapping client base of tier-1 main contractors.
- BHC Ltd: Scottish-based structural steel fabricator with comparable capabilities and similar size profile. Closest like-for-like competitor in geography and service mix, including bridgeworks and complex fabrication.
- Walter Watson Ltd: Northern Ireland-based structural steel fabricator with similar size and capabilities across bridges, buildings, and industrial structures. Comparable family-owned/private mid-market profile.
- Bourne Group Ltd: UK structural steel and architectural metalwork contractor with overlapping services in bridges, commercial buildings, and architectural metalwork. Direct competitor on main contractor tender lists.
- Malin Group: Marine and offshore fabrication specialist overlapping with Cairnhill's marine, defence, and high-security marine capabilities. Both firms operate in naval/MOD supply chains and fabricate complex marine assemblies.
- Elland Steel Structures Ltd: UK steel fabrication business with similar scale and offerings across structural steel, plate work, and architectural metalwork. Competes for similar mid-sized infrastructure and commercial tenders.
- Rowecord Engineering Ltd: Welsh-based structural steelwork contractor with comparable fabrication, installation, and bridgework services. Competes for similar UK infrastructure and commercial contracts.
- Leach Structural Steelwork Ltd: UK steel fabrication company with comparable services in structural steelwork, plate fabrication, and architectural metalwork. Direct competitor for similar project sizes and sectors.
Broad incumbents
- Severfield plc: UK's largest structural steel fabricator with extensive capacity across commercial, industrial, and infrastructure sectors. Comparable core fabrication and erection services but at materially greater scale and broader geographic footprint.
- William Hare Group: Established UK structural steel fabricator with significant capacity and a long history serving infrastructure and commercial construction. Competes directly on tier-1 main contractor frameworks and bridge/installation work.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Cairnhill Structures social profiles
Digital presenceCairnhill Structures compliance and trust
Trust signalCompliance7 records
Cairnhill Structures financial estimates
Financial estimateRevenue estimate
Valuation estimate
Cairnhill Structures leadership team
Management profileNumber of profiles
Profiles7 records
Cairnhill Structures funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Cairnhill Structures M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Cairnhill Structures
What does Cairnhill Structures do?
Cairnhill Structures designs, fabricates, surface-treats, and installs structural steelwork for major infrastructure, defence, nuclear, marine, rail, and construction projects. The company delivers subcontract steel packages ranging from approximately £745k to £4m+ for tier-1 contractors and direct end clients, supported by Execution Class 4 (BS EN 1090-2) certification and in-house metrology/digital surveying (C-Met Division). It also supplies Steel Framing Systems (SFS) for residential and commercial construction projects.
Is Cairnhill Structures a public or private company?
Cairnhill Structures is a private company. It is classified as corporate owned and is currently operating.
When was Cairnhill Structures founded?
Cairnhill Structures was founded in 1971. It employs 101 to 250 people.
Where is Cairnhill Structures based?
Cairnhill Structures is headquartered in Coatbridge, United Kingdom, in the Europe region.
How does Cairnhill Structures make money?
Two revenue lines are on record. Structural Steel Fabrication and Installation is the primary driver. The others are steel Framing Systems (SFS).
Who are Cairnhill Structures's main competitors?
Direct peers on record are Adey Steel Ltd, BHC Ltd, Walter Watson Ltd, Bourne Group Ltd, Malin Group, Elland Steel Structures Ltd, Rowecord Engineering Ltd and Leach Structural Steelwork Ltd. Broad incumbents are Severfield plc and William Hare Group.
Does Cairnhill Structures have an API?
No public API is recorded for Cairnhill Structures.
What industry is Cairnhill Structures in?
Cairnhill Structures's product category is Structural Steel Fabrication. Its primary akta.pro industry code is IMADACAA, Structural Steel Fabrication, with a secondary code of IMADACAD, Steel Plate, Sections & Welded Assemblies. Its NAICS code is 332312 and its SIC code is 3440.