Envolve Infrastructure

What Envolve Infrastructure does

Envolve Infrastructure Ltd is a UK civil engineering and specialist infrastructure services firm founded in 1984, headquartered in Pontyclun, South Wales, and operating as a wholly owned subsidiary of London-listed Renew Holdings PLC since 2013. The company designs and delivers water, wastewater, and specialist infrastructure projects for major UK water utilities (Dŵr Cymru Welsh Water, Wessex Water, Bristol Water, South West Water) as well as rail (Great Western Railway) and energy (National Grid) clients. Its core offerings span three product lines: Water & Waste Services (mains renewal, trenchless technology, treatment works, dam safety, and emergency response), Specialist Engineering Services (reinforced concrete structures, deep shaft construction, pipejacking, auger boring, guided boring, and micro tunnelling), and Civil Engineering Services (environmental, highways, power, and rail specialisations). Following the April 2026 acquisition of Ty Draig Group (Edwards Diving Services and Remar Safety Services), the company expanded into specialist marine, diving, inspection, fabrication, surveying, and breathing apparatus services.

The firm operates a directly employed specialist workforce model supplemented by a mature local supply chain, with headcount in the 101-250 range. Revenue is generated through negotiated long-term framework agreements and project-based contracts with UK utilities and infrastructure owners, with contract values ranging from minor works (~£600k) to multi-million pound framework positions. The company secured approximately £480m+ of active framework awards, including a £160m DCWW Wastewater R&M Framework, a £320m DCWW Water Network Alliance Framework, and participation in a £3bn South West Water AMP8 framework via a joint venture with Network Plus. Reported revenue grew from £33m in FY 20/21 to £92m in FY 23/24, with FY 24/25 provisional of £73m and FY 25/26 projected at £80m, reflecting the lumpiness of utility framework cycles. Approximately 85% of business comes from repeat clients, and 41 years of heritage with Dŵr Cymru Welsh Water underpins customer retention. Pricing is not publicly disclosed; all contracts are negotiated through competitive framework tender processes, and the business is supported by certifications including Achilles RISQS 5*, ISO 9001, ISO 14001, GDPR compliance, and the RoSPA President Award for safety.

Name

Envolve Infrastructure

Legal name

Envolve Infrastructure Ltd

Website

https://envolve-infrastructure.co.uk

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

101–250 employees

Short description

Envolve Infrastructure is a UK civil engineering firm designing and delivering water, wastewater, and specialist infrastructure projects for major UK water utilities and infrastructure owners via long-term framework agreements, operating as a wholly owned subsidiary of Renew Holdings PLC since 2013.

Ownership category

akta.pro rank

Product category

Water Infrastructure Civil Engineering Services

NAICS

Water and Sewer Line and Related Structures Construction (237110), Water and Sewer Line and Related Structures Construction (23711), Utility System Construction (2371)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE)

akta.pro secondary industries

Design & Engineering for Renewal/Expansion (Pipelines, Pump Stations, Treatment Plants) (EUANALAD), Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE), Water Conveyance Tunnels & Large-Diameter Pressure Mains (Long-Distance) (TLAGAHAI), Hydro BOP Civil & Water Conveyance (Dams, Spillways, Penstocks, Canals) (EUAMAFAG)

Keywords

• Water infrastructure services
• Civil engineering construction
• Wastewater pipeline construction
• Trenchless technology services
• Tunnelling and shaft construction

Headquarters

HQ city

Llantrisant

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Water Sector Infrastructure Services: Delivers civil engineering and specialist construction services to water utilities through long-term framework agreements and project-based contracts. Revenue is generated through direct delivery of water, wastewater, and specialist engineering projects for major UK water companies.
2. Specialist Marine and Civil Engineering: Following the acquisition of Edwards Diving Services and Remar Safety Services, the company now offers diving services, civil and marine engineering, engineering inspection, safety access and rescue, mechanical and fabrication services, bridge and culvert engineering, surveying and geomatics, and breathing apparatus servicing.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Envolve Infrastructure is a UK civil engineering firm that designs, builds, and maintains clean water and wastewater infrastructure for major water utilities. It delivers water and wastewater pipelines, treatment works, dams, tunnelling, deep shaft construction, and specialist engineering services through long-term framework agreements and project-based contracts. The company operates with a directly employed workforce and serves clients including Dŵr Cymru Welsh Water, Wessex Water, Bristol Water, South West Water, and National Grid.

Product overview

Envolve Infrastructure is a civil engineering and specialist infrastructure services company operating since 1984 as a wholly owned subsidiary of Renew Holdings PLC. The company offers a unified portfolio of integrated infrastructure services organized around three core offerings: Water & Waste Services (operational support, mains renewal, trenchless technology, treatment, dam safety), Specialist Engineering Services (structures, shafts, tunnelling), and Civil Engineering Services (environmental, highways, power, rail). Following the April 2026 acquisition of Ty Draig Group Limited, the portfolio expanded to include Edwards Diving Services (marine and diving services) and Remar Safety Services (breathing apparatus), enabling enhanced turnkey capabilities for the water and marine sectors. The company serves major UK water utilities including Dŵr Cymru Welsh Water, Wessex Water, Bristol Water, and South West Water through long-term framework agreements.

Differentiator

Problem solved

Functional benefit

Products and services

• Water & Waste Services Comprehensive water and wastewater infrastructure services including operational support, mains renewal, trenchless technology, potable water mains, wastewater and surface water management, treatment works, and dam safety. Serves water utilities including Dŵr Cymru Welsh Water, Wessex Water, Bristol Water, and South West Water.
• Specialist Engineering Services Reinforced concrete structures, tunnelling, and deep shaft construction delivered with directly employed teams and specialized supply chain partners. Includes pipejacking, auger boring, guided boring, and micro tunnelling capabilities for complex infrastructure projects.
• Civil Engineering Services Structural and major civil engineering projects spanning water, power, rail, and energy sectors. Includes environmental, highways, power, and rail specializations with full pre-construction services including optioneering, geotechnical, value engineering, and temporary works.
• Edwards Diving Services (EDS) Specialist marine and civil engineering services for the water sector, including diving services, engineering inspection, marine civil works, bridge and culvert engineering, surveying and geomatics, mechanical and fabrication services.
• Remar Safety Services (RSS) Breathing apparatus servicing, supply, and user training provider including high pressure cylinder testing and charging services for the water and marine sectors, and safety access and rescue services.
• Dam Safety Services Specialist dam safety infrastructure installation and maintenance services including specialist apparatus manufacturing, emergency rescue teams, marine engineering, dive teams, confined space working, and specialist temporary works for high-risk dam infrastructure.
• Mains Renewal & Trenchless Technology Water main renewal services including slip lining, pipe bursting, and trenchless technology solutions for potable water mains rehabilitation and replacement.
• Treatment Works Water recycling centre and treatment facility construction, upgrade, and maintenance services including activated sludge plants, ferric dosing systems, and stormwater storage solutions.
• Tunnelling Services Complex tunnelling projects including pipejacking, auger boring, guided boring, and micro tunnelling in varying ground conditions for water and civil engineering applications.

Quantifiable outcome

• 36% reduction in carbon emissions in FY 24/25
• +3 more outcomes

Named customers6 records

Segments1 record

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Network Plus Envolve Joint VenturecoreStrategic or Co-development Partner · 20 November 2023The Network Plus Envolve Joint Venture was awarded Strategic Delivery Partner Appointment on South West Water Ltd £3bn AMP8 Engineering Tier 1 Delivery Framework. This joint venture combines Network Plus's network expertise with Envolve's civil engineering capabilities for major water infrastructure delivery.

Scale indicators7 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Kier Group: UK infrastructure and construction group with water utilities operations including network maintenance and capital delivery. Larger, broader portfolio but competes for similar water utility framework work.
• Costain Group: Large UK infrastructure group with a substantial water division delivering treatment works, network upgrades, and AMP-cycle capital programmes. Wider portfolio but significant water infrastructure overlap with Envolve.
• Galliford Try: UK construction and infrastructure group with an Environment division covering water and wastewater infrastructure. Broader portfolio but operates in the same framework tender market for UK water utilities.
• Skanska UK: UK arm of international infrastructure group with water and utilities operations including pipeline and treatment works delivery. Comparable framework-based water infrastructure delivery but at much larger scale.

Direct peers

• Morrison Water Services: UK water infrastructure contractor delivering mains renewal, wastewater network maintenance, and capital programmes for major water utilities. Highly comparable specialist contractor profile with similar framework-based delivery model.
• Network Plus: UK utility infrastructure contractor specialising in water, gas, and multi-utility networks. Envolve's direct joint venture partner on the South West Water AMP8 framework, making it a particularly close operational peer.
• Mott MacDonald Bentley (MMB): Joint venture between Mott MacDonald and Bentley that delivers integrated design-and-construct water and wastewater infrastructure for UK utilities. Directly comparable in water infrastructure delivery to major UK water companies.
• J Murphy & Sons: UK infrastructure contractor with significant water utilities division delivering pipeline, treatment, and network maintenance work. Comparable framework-based delivery model to UK water utility clients.
• Clancy Docwra: UK water infrastructure contractor delivering mains renewal, wastewater networks, and utility services to major water companies. Comparable specialty contractor profile and framework-based GTM motion.
• Barhale Construction: Specialist UK civil engineering contractor with strong water and wastewater infrastructure focus, including tunnelling, pipelines, and treatment works. Comparable specialty contractor serving similar UK utility framework clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/envolve.infrastructure
• LinkedInlinkedin.com/company/envolveinfrastructure

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries2 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 Envolve Infrastructure