RSK Group

What RSK Group does

RSK Group is a privately held, employee-owned multidisciplinary environmental and engineering consultancy founded in 1989 by Alan Ryder in Helsby, United Kingdom. The group brings together more than 200 acquired subsidiary businesses employing over 17,000 sector specialists across 40+ countries and six continents, delivering services across four core markets: energy, water, infrastructure, and the natural and built environment. Service lines span environmental consulting, engineering and design consulting, on-site environmental solutions (waste management, remediation, circular economy), and testing, inspection, certification and compliance, with subsidiary brands such as MWH Treatment (water design-and-build), RSK Orbital (aerial/terrestrial survey SaaS), and Axis (carbon capture and storage consultancy).

The business operates a federated buy-and-build model: acquired firms retain their brand and entrepreneurial leadership while gaining access to a shared back office, Innovation Hub (launched 2022), certification infrastructure (ISO 9001/14001/45001, PAS 2080, SBTi-validated targets), and cross-selling channels. Revenue mechanics are driven by enterprise-level project and framework contracts, with multi-year agreements in place with anchor clients such as National Highways, Network Rail, water utilities, and global energy sector customers. Group revenue grew from £275m in 2020 to over £2.2bn currently, supported by a £520m preferred equity raise in September 2024 and 11 acquisitions completed in FY25, with a stated 2030 target of £5bn revenue and 40,000 employees.

Go-to-market is direct enterprise sales by dedicated business development teams within each subsidiary, supplemented by group-level marketing through newsroom insights, webinars, and industry events. AI is positioned as an internal adoption program led by a board-level director, with the most visible productized capability being RSK Orbital's web-based survey data delivery; the group has not disclosed proprietary AI models or patents, so AI currently functions as a productivity layer rather than a core differentiator.

Name

RSK Group

Legal name

RSK Group Limited

Website

https://rskgroup.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

RSK Group is a privately held, employee-owned UK-based environmental and engineering consultancy that brings together 200+ specialist businesses employing 17,000+ staff across 40+ countries, serving enterprise clients in energy, water, infrastructure, and the natural and built environment.

Ownership category

akta.pro rank

Headquarters

HQ city

Helsby

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, Marketing or Sales, Infrastructure

Revenue model

1. Environmental and Engineering Services: RSK generates revenue through providing comprehensive environmental and engineering services including environmental consulting, engineering and design consulting, environmental solutions, and testing, inspection, certification and compliance services across water, energy, infrastructure and natural/built environment sectors

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

RSK Group is a multi-disciplinary environmental and engineering consultancy bringing together more than 200 businesses to deliver pragmatic environmental consulting, engineering and design consulting, environmental solutions, and testing, inspection, certification and compliance services. The group serves enterprise and government clients across four core markets — energy, water, infrastructure, and natural and built environment — in 40+ countries, with branded offerings including RSK Orbital (aerial/terrestrial survey SaaS) and RSK Contact (expert-finding platform).

Product overview

RSK Group operates as a global leader in environmental and engineering solutions, bringing together more than 200 businesses to deliver pragmatic, multidisciplinary services. The company is not a single unified software product but rather a portfolio of specialized operating companies offering environmental consulting, engineering and design consulting, environmental solutions, and testing/inspection/certification services. Key branded offerings include RSK Orbital (aerial/terrestrial surveys and laser scanning via in-house SaaS), RSK Contact (expert-finding platform), and MWH Treatment (process-intelligent water sector design and build). The group serves markets across energy, infrastructure, water, and natural and built environment sectors, with services spanning from environmental impact assessments and geotechnical investigations to waste management, carbon capture, and infrastructure design.

Differentiator

Problem solved

Functional benefit

Products and services

• Environmental Consulting Environmental consultancy services spanning environmental and social impact assessments, remediation, brownfield development, geotechnical investigations, and biodiversity assessments for enterprise and government clients.
• Engineering and Design Consulting Engineering and design consultancy services including civil, structural, geotechnical, and process engineering for infrastructure, water, and energy projects.
• Environmental Solutions On-site environmental solutions including waste management, remediation, circular economy initiatives, and sustainable resource management for enterprise clients.
• Testing, Inspection, Certification and Compliance Testing, inspection, certification and compliance services including UKAS-accredited testing to ISO 17025 and 17020 standards for various environmental and safety parameters.
• Energy Transition Consultancy Comprehensive energy transition services supporting governments, businesses, and communities in achieving energy-resilient futures, spanning clean energy generation (solar, wind), energy consumption optimization, energy infrastructure design, and oil and gas decommissioning.
• Water Sector Solutions Water and wastewater treatment services including process-intelligent design and build solutions, delivered through MWH Treatment for the water utility sector.
• RSK Orbital Provides world-class aerial and terrestrial surveys, laser scanning and photogrammetry, delivering results directly to clients through modern web-based SaaS applications developed in-house.
• RSK Contact Expert-finding platform that enables clients to find the right expert from RSK's large bank of services and support systems, making the process of finding and contacting specialists simple and intuitive.
• Ecosystem Survey Services Ecological survey and assessment services including national-scale surveys on soil, vegetation and landscape data for environmental policy and land management.

Quantifiable outcome

• 27% carbon intensity reduction between FY20 and FY25
• +2 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature3 records

Partnerships

Three partnerships are on record, tiered core and minor.

• HV Energy Systems (HVES) Co-founderscoreOthers · 10 May 2026HVES co-founders Craig Steven and Louis Wright will continue leading the business, strengthening RSK's high-voltage grid connection capabilities
• National Rivers Consortium (NRC)minorStrategic or Co-development Partner · 10 March 2026Partnership of environmental specialists, engineers and construction professionals that launched UK's first national nutrient credit bank, with RSK Biocensus serving as appointed Responsible Body
• Thrings (Legal Framework Provider)minorImplementation/ SI/ Consulting Partner · 10 March 2026Thrings provided the legal framework for the National Rivers Consortium's nutrient credit bank initiative

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• WSP Global: Global environmental and engineering consultancy with deep UK presence; competes directly with RSK across environment, water, energy, and infrastructure, and pursues a similarly aggressive acquisition strategy (e.g., acquisition of Wood Group's E&I business) and is a meaningful comparable for M&A-led growth.
• Tetra Tech: Leading global environmental and engineering consultancy with deep water and renewable energy expertise. Direct competitor in environmental consulting, particularly in water sector where RSK operates MWH Treatment, and a key international peer for environmental and sustainability work.
• Arcadis: European-headquartered global design and consultancy firm with strong environmental and sustainability practices. Closely comparable to RSK's horizontal environmental/engineering service portfolio and competes for similar UK and European enterprise clients.
• ERM (Environmental Resources Management): World's largest pure-play environmental and sustainability consultancy. Directly comparable to RSK's environmental consulting practice, serving many of the same global energy and infrastructure clients with similar decarbonisation and ESG advisory services.
• SLR Consulting: UK-headquartered global environmental and advisory consultancy. Closest direct competitor in the UK market with overlapping environmental consulting, water, and infrastructure services, and comparable mid-market profile and acquisition-led growth history.
• Stantec: Global environmental and infrastructure consulting firm with strong water and environmental services practices. Directly comparable to RSK's water and natural/built environment segments, and has pursued a similar acquisition strategy to build scale.

Broad incumbents

• Jacobs Solutions: Large global professional services firm with substantial environmental, water, and infrastructure consulting practices. Comparable in scale and service mix, though broader in scope and offering critical infrastructure consulting alongside environmental services.
• AECOM: Global infrastructure and environmental consulting firm with overlapping services in environmental consulting, water, transportation, and energy. Comparable as a multi-disciplinary professional services firm addressing similar clients and markets, though at much larger scale.
• AtkinsRéalis: Global engineering and project management consultancy with environmental and infrastructure services. Comparable for rail/infrastructure consulting where RSK's Octavius division competes, with overlapping framework agreement relationships with Network Rail and National Highways.
• Bureau Veritas: Global testing, inspection, certification and compliance (TIC) firm. Comparable to RSK's TIC practice and UKAS-accredited testing services, with broader geographic scale and broader service portfolio than RSK's testing segment.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/rskgroupvideo
• Facebookfacebook.com/RSKGroup
• LinkedInlinkedin.com/company/rsk-group-plc
• Instagraminstagram.com/therskgroup
• Xx.com/RSKGroup

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles27 records

Subsidiaries15 records

Funding overview

Funding rounds4 records

Investors4 records

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

M&A43 records

Investments

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

Frequently asked questions about RSK Group