What OnSite does

OnSite Central Ltd is a UK specialist contracting firm founded in 1977 and operating as a division of South Staffordshire Plc, providing infrastructure maintenance, rehabilitation and engineering services to UK water and sewerage companies, rail operators (Network Rail, London Underground), government bodies (Birmingham City Council, Dudley Council, Canal & River Trust), and a small base of domestic customers. Core services span pipeline and civil engineering, sewer rehabilitation (CIPP relining, CIPP patch repairs), trenchless technologies (directional drilling, pipe jacking, sliplining, auger boring, GRP segmental lining, pipe bursting), high-pressure water jetting, CCTV and sonar sewer surveys, flow monitoring, waterway repair, and rail drainage services. Headquartered in Heathrow with operations across the UK and selective work in Ireland (including a ~300 flow monitor deployment in Dublin), OnSite employs 101–250 staff and operates from multiple regional offices and depots.

OnSite's service delivery rests on a portfolio of specialist equipment and exclusive technology partnerships. The company is the exclusive UK installer of Sekisui SPR™ spiral wound lining (sizes 150mm–5500mm) and holds an exclusive UK partnership with Kando Environmental Services for wastewater intelligence analytics. Proprietary/internal capabilities include the OnSiteLive real-time flow monitoring platform, the PortaDam temporary dam system, solar-powered CCTV inspection vans, UV lining rigs including 'Light Train' equipment, Hydrospin CSO vortex technology, and the FHOSS cycle-lane safety system fitted to HGVs. It was the first UK contractor to deliver a pressure main CIPP liner to the new international standard (with Wessex Water, 2018). Sustainability and compliance credentials include RISQS rail qualification, Achilles UVDB perfect scores, Achilles Carbon Reduce ten-year achievement, FORS Silver, and Supply Chain Sustainability School Gold.

OnSite generates revenue almost exclusively through long-term framework agreements (typically 3–5 years) and competitive tenders with enterprise clients, with per-project pricing negotiated rather than publicly disclosed. It reported £100m turnover in 2023 (25% YoY growth, 37% growth over two years) and operates on 22 national water sector frameworks. Major clients include Severn Trent Water, Wessex Water, Anglian Water (@OneAlliance), United Utilities, South West Water, Northumbrian Water, South Staffs Water, Network Rail, London Underground, Balfour Beatty, BAM Nuttall, Arcadis, Kier, Amey, the Canal & River Trust, and various local authorities. Distribution is direct enterprise field sales; a smaller domestic drainage arm serves homeowners and insurance claims via the website. Leadership transitioned materially in 2024–2026, with Eddie Lundon appointed Managing Director in 2026 following the retirements and interim succession of long-serving MD Alan Plante.

Name

OnSite

Legal name

OnSite Central Ltd

Website

https://onsite.co.uk

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

101–250 employees

Short description

OnSite is a UK specialist contracting firm providing infrastructure maintenance, trenchless rehabilitation, flow monitoring, and civil engineering services to water utilities, rail operators, and government bodies under multi-year framework agreements.

Ownership category

akta.pro rank

Product category

Infrastructure Maintenance and Specialist Contracting Services

NAICS

Water, Sewage and Other Systems (2213)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Sanitary Services (4950)

akta.pro primary industry

Sludge/Biosolids Handling & Treatment Facilities Construction (IMAFAGAJ)

akta.pro secondary industries

Rehabilitation & Renewal (CIPP, Lining, Coatings, Structural Repairs) (EUANALAF), Water & Wastewater Infrastructure Asset Management (EUAEAMAH)

Keywords

• Infrastructure maintenance services
• Sewer rehabilitation
• Trenchless technology
• Pipeline civil engineering
• Rail drainage services

Headquarters

HQ city

Worcester

HQ country

United Kingdom

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Specialist Contracting Services: OnSite generates revenue through providing specialist infrastructure maintenance and engineering services to water companies, wastewater operators, rail sector clients, and government bodies. Revenue comes from framework agreements, direct contracts, and project-based work.

Pricing tiers

Go-to-market motion2 records

Distribution channels7 records

Marketing channels8 records

Core offering

OnSite is a specialist infrastructure maintenance and engineering contractor delivering drainage, sewer, pipeline, waterway, and rail services to UK water utilities, Network Rail, government bodies, and tier-one contractors. Services encompass sewer rehabilitation (CIPP relining), trenchless no-dig technologies, high-pressure water jetting, CCTV and sonar surveys, flow monitoring (OnSiteLive), pipeline repair, civil engineering, waterway/canal maintenance, and confined space rescue. The company holds 22 national water sector frameworks and operates an extensive specialist equipment fleet, including exclusive access to Sekisui SPR™ lining technology and the Kando wastewater intelligence platform.

Product overview

OnSite is a specialist contracting services business offering a comprehensive portfolio of infrastructure maintenance and engineering services. The core offering consists of multiple interconnected service lines: Pipeline and Civil Services (water mains, leak detection, pipe laying), Sewer Rehabilitation (CIPP relining and repairs), Trenchless Technologies (no-dig methods), Sewer Cleaning (HPWJ), Sewer Surveys (CCTV and sonar), Flow Monitoring (including OnSiteLive real-time monitoring), Waterway Repair, Rail Services, Temporary Dams (PortaDam), Confined Space Rescue, and Domestic Drainage services. The company also offers technology-enabled services including Kando wastewater intelligence for pollutant detection and real-time network monitoring capabilities. Rather than a unified software platform, OnSite operates as a services contractor with specialist equipment and technology-enhanced service offerings.

Differentiator

Problem solved

Functional benefit

Products and services

• Pipeline and Civil Engineering Services Comprehensive pipeline installation, repair, maintenance, and civil engineering works including water mains repair, leak detection (Find & Fix), line stopping, mains pressure testing and chlorination, water meter installation, pipeline repair and maintenance, and pipe laying and replacement. Serves UK water utilities and infrastructure owners.
• Sewer Rehabilitation (CIPP Relining and Patch Repairs) Cured-In-Place Pipe (CIPP) relining and patch repair services for restoring sewer infrastructure without excavation, including first-UK pressure main lining to international standard for Wessex Water.
• Trenchless Technologies (No-Dig Solutions) No-dig pipe rehabilitation and installation methods including shaft sinking, directional drilling, pipe jacking, sliplining, auger boring, GRP segmental lining, pipe bursting, and timber headings. Used to install or rehabilitate underground pipelines without excavation.
• Sewer Cleaning Services High-pressure water jetting (HPWJ) and off-road cleaning services for sewer and drainage system maintenance.
• Sewer Survey Services Comprehensive sewer survey services including CCTV surveys, pipeline sonar surveys, impermeable area surveys, manhole surveys, and topographical surveys for water utilities and infrastructure owners.
• Flow Monitoring and OnSiteLive Flow surveys, water quality monitoring, and real-time monitoring services (OnSiteLive) for wastewater network intelligence. Includes the live launch of OnSiteLive (2025) as a real-time monitoring platform for drain monitoring sensors.
• Waterway Repair Services Waterway maintenance including de-vegetation, culvert maintenance, civil engineering, and ecological surveys for canals, rivers, and waterways owners such as Canal & River Trust and Scottish Canals.
• Rail Services (OnSite Rail) Specialist rail sector services including rail surveying services, civil engineering services, turnkey drainage projects, and drainage maintenance for Network Rail, London Underground, and tier-one rail contractors across the UK.
• Temporary Dams (PortaDam and Inflatable Dams) Portable dam solutions (PortaDam and Inflatable Dams) for water control during maintenance and construction works in sewers and watercourses.
• Confined Space Rescue and Support (CSRS) Specialist confined space rescue and support services for safe entry and work in hazardous environments such as sewers, culverts, and industrial tanks.
• Domestic Drainage Services Residential drainage services including build-over surveys, insurance claim handling, and water meter installation for individual homeowners.
• Kando Wastewater Intelligence Exclusive UK partnership with Kando Environmental Services providing advanced wastewater analytics that identifies pollutants in sewers using real-time sensors, enabling proactive and predictive pollution management. Delivered as part of OnSite's wastewater intelligence offering to UK water utilities.
• Build Over Surveys Build-over drainage surveys for homeowners undertaking property extensions or construction work near public sewers, satisfying water authority requirements.

Quantifiable outcome

• 40% faster project delivery using Batch X Direct Delivery Model with Severn Trent Water
• +5 more outcomes

Named customers22 records

Segments7 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature12 records

Partnerships

22 partnerships are on record, tiered strategic, core and minor.

• Kando Environmental ServicesstrategicTechnology or Integration · 1 January 2026Exclusive UK partnership for Kando wastewater intelligence technology. Finham Smart Wastewater Network Intelligence Trial uses real-time sensors and automated controls to predict and prevent pollution in sewer networks. Kando identifies pollutants in sewers.
• Wessex WatercoreStrategic or Co-development Partner · 1 September 202520-year unbroken partnership. OnSite's Sewer Rehabilitation team appointed to 5-year sewer rehabilitation framework using CIPP and CIPR techniques including full-length liners, pressure liners, patch repairs, lateral liners and connection point sealing.
• Severn Trent WatercoreStrategic or Co-development Partner · 1 February 2025OnSite delivers innovative projects with Severn Trent Water including the Batch X Direct Delivery Model achieving 40% faster project delivery. OnSite maintains wastewater data loggers across the full Severn Trent region on a 5-year framework. Severn Trent plans to install 40,000 additional proactive alarm monitors.
• United UtilitiescoreStrategic or Co-development Partner · 1 January 2025OnSite appointed as one of 30 civil construction partners for AMP8 £0.5bn+ minor works framework. Scope includes water and wastewater site works, process treatment facility improvements, network standardization, and storm overflow solutions.
• WSPstrategicStrategic or Co-development Partner · 1 January 2025Industry partner in Ofwat-funded Recovering Energy from Water scheme. £1.44m project to reduce reliance on fossil fuels by harnessing renewable energy from existing water infrastructure.
• CarrierstrategicStrategic or Co-development Partner · 1 January 2025Industry partner in Ofwat-funded Recovering Energy from Water scheme alongside South Staffordshire Water, WSP, Spring, Affinity Water, Portsmouth Water, South West Water.
• South Staffordshire WatercoreStrategic or Co-development Partner · 1 January 2025OnSite supporting South Staffordshire Water on Ofwat Innovation Fund £1.44m Recovering Energy from Water scheme. Partners include WSP, Carrier, Spring, Affinity Water, Portsmouth Water, South West Water.
• South West WatercoreStrategic or Co-development Partner · 1 October 2024OnSite appointed to 5-year CCTV framework covering South West Water operational area including Cornwall, Devon, Bournemouth, Isles of Scilly, and Bristol Water. Completes reactive and strategic CCTV inspections.
• Vital EnergiminorStrategic or Co-development Partner · 1 January 2024OnSite appointed by Vital Energi to help upgrade Newport heat distribution network.
• Bouygues Energies & ServicesminorStrategic or Co-development Partner · 1 January 2024OnSite Pipelines appointed to support Swaffham Prior Heat Network project.
• Eden Geothermal ProjectminorStrategic or Co-development Partner · 1 January 2024OnSite Pipelines appointed to help deliver Eden Geothermal Project supplying renewable heat to the Eden Project.
• Ongo HomesminorChannel Partner/ Reseller/ Distributor · 1 January 2024Multi-supplier 2-year framework (with potential 2-year extension) for planned and reactive drainage services to 10,000 homes in North Lincolnshire.
• Birmingham City CouncilminorStrategic or Co-development Partner · 1 January 2024Four-year framework for routine maintenance of watercourses and associated structures. Social value commitment through Bristol WORKS partnership.
• Canal & River TrustcoreStrategic or Co-development Partner · 1 October 202210-year restoration contract. OnSite appointed to Civil Engineering Contract (CEC) Framework working across England and Wales waterways network including over 2,000 miles of canals and rivers plus 10,000+ associated assets.
• Anglian Water @OneAlliancecoreStrategic or Co-development Partner · 1 February 2022OnSite appointed as framework supplier in Anglian Water's West Region for 3-year civils works and services. Working with @OneAlliance to deliver infrastructure and non-infrastructure solutions. Scope includes pipework, valves, roads, brickwork, groundworks, manholes.
• WatertrainminorImplementation/ SI/ Consulting Partner · 1 January 2022Training partner for apprenticeship programs. Apprentices gain NVQ L2 NCO Water Operative qualification through block release training.
• Institute of WaterminorOthers · 1 January 2022OnSite became Institute of Water Company Affiliate member to support UK water industry careers professional body and engage with industry on professional development.
• Dudley CouncilminorStrategic or Co-development Partner · 1 January 2022£1 million five-year deal for highways gully clearing allowing crews to attend gullies on rolling three-year programme.
• Sekisui SPR™coreOEM/ Whitelabel/ Licensing Partner · 1 January 2018Exclusive UK installer of patented Sekisui SPR™ spiral wound lining technology. First culvert rehabilitation using this technology in UK. Applicable to any shape from 150mm to 5500mm sizes with minimal environmental footprint.
• Network RailcoreStrategic or Co-development Partner · 1 January 2017RISQS-qualified supplier. Awarded 5-year drainage services frameworks on 6 routes nationwide. Works on track and near track, stations, tunnels, culverts and bridges.
• London UndergroundcoreStrategic or Co-development Partner · 1 January 2017RISQS-qualified supplier supporting London Underground infrastructure drainage.
• Balfour BeattycoreChannel Partner/ Reseller/ Distributor · 1 January 2017Long-term working relationship providing specialist rail civil and structural works. OnSite holds minor works contract across Network Rail Western route.

Scale indicators14 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Costain Group: UK-listed infrastructure solutions business serving water, energy and transport. Competes with OnSite on water AMP frameworks and rail infrastructure, with broader digital/technology capabilities and a larger balance sheet.
• Kier Group: UK infrastructure services and construction group with water, highways and utilities exposure. Comparable overlap on drainage and water utility frameworks; broader scale and listed status place it as a tier-one incumbent.
• Balfour Beatty: Major UK-listed infrastructure group with substantial water, rail and highways divisions. Overlaps with OnSite in rail drainage/civil works (Balfour Beatty is also an OnSite customer) and competes at the top end of water utility frameworks.

Direct peers

• Clancy Group: UK family-owned contractor providing utility services to water, gas and electricity sectors. Comparable scale and business model, with overlapping trenchless, multi-utility framework delivery.
• Morrison Water Services: Direct UK water and wastewater infrastructure services peer (part of MGroup Services). Provides reactive and planned maintenance, networks, metering and infrastructure construction to UK water utilities on similar multi-year frameworks.
• Barhale: UK specialist civil engineering and infrastructure contractor focused on water, wastewater, rail and highways. Closest direct peer to OnSite with overlapping trenchless technology, framework-based water utility work, and similar regional/mid-tier scale.
• Cappagh Browne Utilities: UK utility contractor focused on water, gas and electric infrastructure. Comparable size and service mix (drainage, mains renewal, trenchless), competing for similar water utility framework work.
• VolkerStevin: Specialist civil engineering contractor within VolkerWessels UK delivering water, flood defence and infrastructure projects. Direct peer in water/wastewater civil engineering and rehabilitation work.
• Mott MacDonald Bentley (MMB): Joint venture design-and-build contractor for UK water companies. Competes with OnSite on water and wastewater infrastructure construction and rehabilitation, with the added dimension of in-house design capability.

Others

• Stantec UK: Global engineering consultancy with significant UK water sector practice. Adjacent rather than direct: provides design and asset management services to many of the same water utility clients OnSite serves, occasionally as a partner and occasionally as a competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/onsite-central-limited
• Xx.com/onsite_central
• Facebookfacebook.com/onsitecentral

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OnSite