Solutions Overview
From controlled flowstopping and under-pressure connections to installation, repair, testing and rehabilitation, Radius Subterra delivers safe, efficient services that minimise disruption and maintain reliable performance across diverse pipeline assets and industries.
Specialist pipeline engineering solutions supporting live, critical and complex networks.
Our solutions support pipeline owners and contractors across the full asset lifecycle, specialising in live network interventions, engineered repairs, installation and enabling services that minimise disruption, reduce risk and maintain continuity of supply.
All works are delivered by experienced, multi-disciplined teams using proven methods, specialist equipment and compliant procedures.
Flowstopping
Engineered live pipeline isolation using squeeze-off, bagging and stopple techniques. Flowstopping enables safe repair, modification or replacement while maintaining control of pressures and flows across multiple pipe materials and diameters.
Pipeline Repair & Maintenance
Engineered repair and maintenance services for damaged, ageing or leaking pipelines. Solutions include encapsulations and emergency response works, supporting continued asset performance across diverse industries, operating conditions and pipeline materials.
Under Pressure Connections
Live pipeline connections using electrofusion branch saddles and engineered under-pressure tees. These methods create new outlets or diversions safely, allowing works to proceed without shutdowns across PE and metallic pipelines of varying materials, diameters and operating pressures.
Pipework Installation & Mainlaying
Installation of PE and metallic pipelines for new mains, diversions and modifications. Delivered using opencut or alternative installation techniques with full jointing, testing and completion reporting to ensure safe integration with live and existing networks.
Pre-Insulated pipework
Installation, repair and replacement of pre-insulated pipe systems for district heating, energy, industrial and utility applications. Solutions maintain thermal efficiency, protect carrier pipe integrity and support long-term network performance.
Pressure Testing
Controlled pressure testing and commissioning to verify pipeline integrity, confirm installation quality and support regulatory compliance. Services ensure assets are leak-tight, structurally sound and ready for handover or return to service.
Pipe Cutting
Precision cold-cutting of metallic and polyethylene (PE) pipelines using spark-free circumferential and longitudinal techniques. Services support controlled pipe removal, rehabilitation, connections and decommissioning without heat, ignition risk or uncontrolled cutting.
Pipe Lining
Trenchless pipe lining solutions that rehabilitate, protect and renew ageing pipelines. Close-fit PE and spray lining systems restore performance, extend asset life and reduce excavation across gas, water and industrial networks.
Manufacturing & Fabrication
Design and manufacture of bespoke polyethylene (PE) and metallic fittings, including branch saddles, tees, manifolds, flanges, end caps and adapters. Engineered components support complex site conditions, non-standard project requirements and safe integration with live pipeline systems.
Engineering & Project Management
Engineering-led planning, design and project coordination for complex pipeline works. Services include governance, compliance assurance, documentation, method development and onsite support to ensure safe, efficient and compliant project delivery.
Case Studies
Discover the prowess of Radius Subterra through our latest case studies.
Witness how we excel in tackling intricate pipeline challenges with innovative solutions and state-of-the-art technology. Stay tuned for more videos showcasing our commitment to engineering excellence.
Faced with severe leaks in a critical 1500mm trunk main, Radius Subterra provided an innovative pipeline rehabilitation solution using their close-fit PE liner system. This approach restored the pipeline’s integrity
Discover how Radius Subterra’s precision engineering revitalises a historic London waterway with cutting-edge pipeline solutions, installing a bespoke branch saddle onto a live water main in Finsbury Park. This job
Radius Subterra partnered with Anglian Water to solve leak issues in a hard-to-reach 10” water pipeline in East Anglia. Using their innovative Rolldown & Slipline method, Subterra maximised pipe bore
In February an accidental incident occurred that resulted in a 10” gas main being damaged, and a hole being drilled into the main. The incident was near to the main
Case Studies
Discover how Radius Subterra delivers safe, innovative and technically assured solutions across the UK’s most challenging pipeline environments.
Faced with severe leaks in a critical 1500mm trunk main, Radius Subterra provided an innovative pipeline rehabilitation solution using their close-fit PE liner system. This approach restored the pipeline’s integrity
Discover how Radius Subterra’s precision engineering revitalises a historic London waterway with cutting-edge pipeline solutions, installing a bespoke branch saddle onto a live water main in Finsbury Park. This job
Radius Subterra partnered with Anglian Water to solve leak issues in a hard-to-reach 10” water pipeline in East Anglia. Using their innovative Rolldown & Slipline method, Subterra maximised pipe bore
What our client’s say about us
Why choose Radius Subterra?
Trusted expertise, engineered solutions and a service approach shaped around your challenges.
For decades we’ve supported utility networks in the UK and beyond with safe, reliable and efficient pipeline services. Our teams combine technical knowledge, industry-leading equipment and a problem-solving mindset to deliver high-quality outcomes with minimal disruption. Whether planned works or complex operational challenges, we provide proven capability and dependable support.
Decades of expertise
With deep roots across the wider Radius Group and extensive experience in live gas, water, biogas and pipeline rehabilitation operations, our teams bring exceptional hands-on knowledge to every project. We understand the pressures faced by network operators and contractors and deliver work that is safe, compliant and technically robust from start to finish.
Committed to quality and safety
Safety underpins every service we deliver. Our work follows industry standards, rigorous internal procedures and environmental best practice. From accredited techniques to specialist equipment, we ensure consistent quality while reducing risk, waste and unnecessary disruption across gas, water and biogas networks.
Minimising disruption
Our specialist techniques, including under-pressure connections, flowstopping and trenchless rehabilitation, allow essential works to continue while maintaining customer service, protecting highways and minimising community impact. Reduced excavation and streamlined operations, support faster reinstatement and lower overall disruption.
Innovation and customisation
From bespoke branch saddles to tailored fittings for non-standard assets, innovation is central to our approach. We engineer solutions to suit each site, material and operating condition, enabling safer, faster and more cost-effective outcomes across complex project environments.
Safety and sustainability
We champion safe working and long-term sustainability. Our methods reduce carbon, excavation material, traffic disruption and reinstatement, while modern equipment and ongoing training create a safer environment for teams and the public. Every project is designed and delivered with environmental responsibility and operational resilience in mind.
Decades of expertise
With deep roots across the wider Radius Group and extensive experience in live gas, water, biogas and pipeline rehabilitation operations, our teams bring exceptional hands-on knowledge to every project. We understand the pressures faced by network operators and contractors and deliver work that is safe, compliant and technically robust from start to finish.
Committed to quality and safety
Safety underpins every service we deliver. Our work follows industry standards, rigorous internal procedures and environmental best practice. From accredited techniques to specialist equipment, we ensure consistent quality while reducing risk, waste and unnecessary disruption across gas, water and biogas networks.
Minimising disruption
Our specialist techniques, including under-pressure connections, flowstopping and trenchless rehabilitation, allow essential works to continue while maintaining customer service, protecting highways and minimising community impact. Reduced excavation and streamlined operations, support faster reinstatement and lower overall disruption.
Innovation and customisation
From bespoke branch saddles to tailored fittings for non-standard assets, innovation is central to our approach. We engineer solutions to suit each site, material and operating condition, enabling safer, faster and more cost-effective outcomes across complex project environments.
Safety and sustainability
We champion safe working and long-term sustainability. Our methods reduce carbon, excavation material, traffic disruption and reinstatement, while modern equipment and ongoing training create a safer environment for teams and the public. Every project is designed and delivered with environmental responsibility and operational resilience in mind.
Contact us
Ready to progress your next pipeline project?
Radius Subterra’s specialist engineering teams are here to support you with safe, efficient and technically assured solutions across every stage of the asset lifecycle.
Get in touch by phone or email to discuss your requirements and speak directly with our experts.
Alternatively, complete the form below with the relevant information.