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.
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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.
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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.
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Engineering and 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.
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Manufacture & 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. 
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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. 
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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.
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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. 
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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. 
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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. 
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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.

Halzhausen

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

369071f5c6f096d955d9ac9560ce3672de6d3fac

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

Anglian Water North Walsham Rolldown pipe lining

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

Carnoustiehighstreet

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. 

Halzhausen

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

369071f5c6f096d955d9ac9560ce3672de6d3fac

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

Anglian Water North Walsham Rolldown pipe lining

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

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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.

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.

Pipeline Challenge Terms & Conditions

  1. The Promoter
    • The promoter is: Radius Subterra Limited, with registration number 01147475 and its registered address at Radius House, Berristow Lane, South Normanton, Alfreton, Derbyshire, DE55 2JJ.
  2. The competition
    • The title of the competition is Pipeline Challenge.
  3. How to enter
    • The competition will run from 09:00 BST on 29 September 2026 (the “Opening Date“) to 17:00 BST on 1 October 2026  (the “Closing Date”) inclusive.
    • All competition entries received after the Closing Date are automatically disqualified.
    • To enter the competition:
      • Entrants must scan the QR code displayed within the Pipeline Engineering Village at No-Dig Live 2026 at stand G56 and complete the online entry form.
      • Entries must include:
        • description of an industry challenge, operational issue or engineering idea;
        • relevant sector;
        • supporting background information;
        • entrant’s full name (first name and surname);
        • company name; and
        • email address.
      • No purchase is necessary and no payment is required to enter.
      • The Promoter will not accept:
        • responsibility for competition entries that are corrupted, not successfully completed or transmitted, lost, mislaid, damaged or delayed in transit, regardless of cause, including, for example, as a result of any postal failure, equipment failure, technical malfunction, systems, satellite, network, server, website, computer hardware or software failure of any kind; or
        • proof of posting or transmission as proof of receipt of entry to the competition.
      • By submitting a competition entry, you are agreeing to be bound by these terms and conditions.
      • Entries will be reviewed after the event by a judging panel comprising representatives of the Promoter and Flowstop Services Limited (“Judging Panel”). One winner will be selected. Entries will be assessed against the following criteria:
        • relevance to the pipeline and utility sectors;
        • potential industry impact;
        • originality; and
        • potential for development into a practical engineering solution.

The Promoter will take reasonable steps to ensure judges are independent of the entrants and that any conflicts of interest are declared and managed.

  1. Eligibility
    • Entries are limited to attendees aged 18 years or over of No‑Dig Live 2026 scanning the QR code at the event. The Promoter reserves the right to verify attendance.
    • The following cannot enter:
      • employees of the Promoter or its holding or subsidiary companies;
      • employees of agents or suppliers of the Promoter or its holding or subsidiary companies, who are professionally connected with the competition or its administration; or
      • members of the immediate families or households of (a) and (b) above.
    • In entering the competition, you confirm that you are eligible to do so and eligible to claim the prize. The Promoter may require you to provide proof that you are eligible to enter the competition.
    • Entries must primarily reflect the entrant’s own original analysis, reasoning and creative input. The Promoter may disqualify entries where it reasonably believes the submission has been substantially generated by artificial intelligence (including but not limited to chatbots such as ChatGPT or similar software applications).
    • There is a limit of one entry per person. Entries on behalf of another person will not be accepted and joint submissions are not allowed.
    • The Promoter reserves all rights to disqualify you if your conduct is contrary to the spirit or intention of the prize competition.
    • Competition entries cannot be returned.
    • By entering, you confirm that your entry is your own original work, does not infringe the rights (including intellectual property and confidentiality rights) of any third party, and that you have obtained any necessary permissions from your employer or any third party to submit the entry and to grant the rights described in clause 9.
    • Do not include confidential or commercially sensitive information in your entry.
  2. The prize
    • The prize is £200 worth of vouchers, redeemable at Amazon, subject to the issuer’s terms including any expiry date.
    • The prize is subject to availability. There is no cash alternative. The Promoter reserves the right to substitute the prize with a prize of equal or greater value.
    • The prize is not negotiable or transferable.
  3. Winners
    • The decision of the Judging Panel is final and no correspondence or discussion will be entered into.
    • The Promoter will contact the winner by email within 14 days after the Closing Date using the email address provided in the entry.
    • The Promoter will publish the winner’s name and company on LinkedIn within 21 days after the Closing Date (the “Announcement Date”)
    • If you object to any or all of your name and winning entry being published or made available, please contact the Promoter at Radius Subterra Limited, Radius House, Berristow Lane, South Normanton, Alfreton, Derbyshire, DE55 2JJ or email Radius.subterra@radiussubterra.com. In such circumstances, the Promoter must still provide the information and winning entry to the Advertising Standards Authority on request.
  4. Claiming the prize
    • Please allow 14 days for delivery of the prize by e-mail.
    • If the winner cannot be contacted, is not available, or has not claimed the prize within 14 days of the Announcement Date, the Promoter reserves the right to offer the prize to the next highest‑ranked eligible entry as determined by the Judging Panel from the entries received before the Closing Date.
  5. Limitation of liability

Insofar as is permitted by law, the Promoter, its agents or distributors will not in any circumstances be responsible or liable to compensate the winner or accept any liability for any loss, damage, personal injury or death occurring as a result of taking up the prize except where it is caused by the negligence of the Promoter, its agents or distributors or that of their employees. Your statutory rights are not affected.

  1. Ownership of competition entries and intellectual property rights
    • Entries will not be returned. Do not include confidential or commercially sensitive information in your entry.
    • For all entries, you grant the Promoter a worldwide, non‑exclusive, royalty‑free licence to use, review and evaluate your entry for the purposes of administering and judging the competition.
    • If you are selected as the winner, as a condition of receiving the prize you agree to assign to the Promoter, with full title guarantee, all intellectual property rights in your winning entry and to waive your moral rights in the winning entry. You agree to execute any documents reasonably required to perfect such assignment.
    • You warrant that your entry is your own original work, does not infringe any third‑party rights, and that you have all necessary rights and permissions to submit the entry and grant the rights set out in these terms.
  2. Data protection and publicity
    • The Promoter will process your personal data as controller for the purposes of administering the competition (including judging, winner notification and publication). Further details, including lawful bases, recipients, retention periods, your rights, and how to exercise them, are set out in our Privacy Policy available at Privacy Policy. See also condition 3 and condition 6.4, with regard to the announcement of winners.
  3. General
    • If there is any reason to believe that there has been a breach of these terms and conditions, the Promoter may, at its sole discretion, reserve the right to exclude you from participating in the competition.
    • The Promoter may void, suspend, cancel, or amend the competition where necessary due to events outside its reasonable control and will do so acting reasonably.
    • These terms and conditions are governed by English law. If any entrants to this promotion wish to take court proceedings, then they must do this within the courts in the United Kingdom.