Quality without compromise
Investing in specialist capability, systems, and people to support safe, reliable project delivery
Our solutions
Whether it’s planned maintenance, major refurbishment, or complex shutdown support, our teams deliver hands-on expertise where it matters most.
By keeping all key skills in-house, we bring precision, safety, and high standards to every project. We perform reliably even in the toughest environments, providing our customers with the confidence they need.
Integrated expertise
Coriant houses multiple specialist businesses and brands under one Group, delivering integrated, end-to-end solutions across engineering, design, delivery, maintenance, and innovation.
With everything connected under one roof, customers benefit from faster delivery, seamless coordination, consistent quality, and experienced teams that understand their assets at every stage of the lifecycle.
Access Solutions
We provide access solutions that support construction, maintenance and inspection activities within industrial and commercial environments. Through scaffolding, rope access and specialist access systems, we enable efficient project delivery across multiple sectors helping clients reach complex or confined areas with minimal disruption.
Engineering
We deliver comprehensive engineering solutions that support the design, installation, maintenance and optimisation of industrial assets and infrastructure across sectors including energy, chemical, and oil and gas. Our experienced teams provide practical, efficient solutions tailored to complex operational environments and project requirements.
Mechanical
Our mechanical services cover the installation, repair and maintenance of critical plant and equipment across industries such as oil & gas, energy, and heavy industries. From pipework and steelwork to shutdown support and equipment upgrades, we help clients maintain operational performance and reliability.
Inspection
Our inspection services support asset integrity and performance through detailed assessments, testing and condition monitoring programmes. Working across sectors such as chemical and energy, we help clients identify issues early, reduce disruption and improve maintenance planning.
Insulation & Corrosion Protection
We deliver insulation and corrosion protection services that improve thermal efficiency, maintain process performance and extend the life of industrial assets. Supporting sectors including offshore oil and gas, our solutions help protect infrastructure operating in demanding environments.
Coatings & Fire Protection
Our specialist coatings and passive fire protection services are designed to protect structures, equipment and facilities from corrosion, environmental exposure and high-temperature conditions. We work across sectors including defence and energy , applying specialist protective systems that enhance durability and long-term asset performance.
Valves
Provides round‑the‑clock expertise to support the full spectrum of valve maintenance and operational requirements. With decades of industry experience, we deliver reliable, engineering‑led solutions to the fossil, nuclear, energy‑from‑waste, oil, gas and petrochemical sectors.
Our brands
Operating through multiple specialist brands, Coriant combines sector expertise with a coordinated approach, giving customers a single trusted partner while preserving the unique strengths of each business.
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Rainham
Specialist industrial services that support and maintain large industrial plants and building infrastructure.
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TEI
A leading UK engineering construction organisation in the power generation and petrochemical industries.
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Zenith
Multi-disciplined access, maintenance and repair. Focused on innovation, combined with engineering, and design excellence
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SCA
A specialist access scaffolding and temporary containment provider servicing projects across the UK from a network of locations.
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Control Valve Services
Providing an independent specialist control valve maintenance service across international blue chip clients
Our integrated approach enables clients to streamline delivery, reduce downtime and maintain the integrity and reliability of their most important assets
