# 100 leading environmental services companies in England

Tamtam tracks 271 environmental services companies headquartered in England. This list ranks the 100 largest by number of employees on LinkedIn, led by DS Smith, RSK Group and Johnson Matthey. Their median headcount is 1,425. Half of them were founded in 1974 or later. The most common headquarters are London (11), Warrington (4) and Maidenhead (3).

These English companies are primarily large corporations providing environmental services, utilities, and manufacturing. Many focus on sustainability and resource management. Notable examples include DS Smith, which offers packaging and recycling; RSK Group, a global environmental consultancy; Johnson Matthey, specializing in sustainable technologies; and Pentair, a provider of water solutions.

A significant portion of these companies, such as Thames Water, Severn Trent, United Utilities, Anglian Water Services, and Yorkshire Water, are utilities. They are headquartered across various English cities, with a notable cluster in London, reflecting the capital's role as a business hub.

🇬🇧 England · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [DS Smith](https://www.tamtam.ai/c/ds-smith) (dssmith.com)<br>Innovative packaging solutions, paper products and recycling services using renewable resources to minimize environmental impact while optimizing supply chains for increased profitability. | Manufacturing | 🇬🇧 London | 13,157 |  |
| 2 | [RSK Group](https://www.tamtam.ai/c/rsk-group) (rskgroup.com)<br>Global provider of environmental consultancy and engineering services, integrating innovation and multidisciplinary collaboration to address complex sustainability challenges. | Environmental Services | 🇬🇧 Helsby | 12,442 |  |
| 3 | [Johnson Matthey](https://www.tamtam.ai/c/johnson-matthey) (matthey.com)<br>development of sustainable technologies supporting energy, chemicals, and automotive sectors to decarbonise, reduce emissions, and enhance sustainability | Chemical Manufacturing | 🇬🇧 London | 8,592 | 1817 |
| 4 | [Pentair](https://www.tamtam.ai/c/pentair) (pentair.com)<br>This company provides sustainable water solutions for residential, business, and industrial use globally, focusing on improving lives and the environment | Industrial Machinery Manufacturing | 🇬🇧 London | 7,711 | 1966 |
| 5 | [Thames Water](https://www.tamtam.ai/c/thames-water) (thameswater.co.uk)<br>Providing clean water and wastewater services to millions, maintaining infrastructure, ensuring quality, investing in sustainability and community education. | Utilities | 🇬🇧 Reading | 7,000 |  |
| 6 | [Severn Trent](https://www.tamtam.ai/c/severn-trent) (severntrent.com)<br>Provision of clean water and safe wastewater removal for homes, schools, businesses, and hospitals, focusing on community care and quality service. | Utilities | 🇬🇧 Coventry | 7,000 | 1974 |
| 7 | [RPS](https://www.tamtam.ai/c/rps) (rpsgroup.com)<br>Global consulting and engineering firm part of Tetra Tech, providing services in property, energy, transport, water, resources, defense, and government sectors | Business Consulting and Services | 🇬🇧 Abingdon | 5,846 |  |
| 8 | [United Utilities](https://www.tamtam.ai/c/united-utilities) (unitedutilities.com)<br>Provides water and wastewater services to seven million people in the North West of England through treatment, delivery, and environmental protection measures | Utilities | 🇬🇧 Warrington | 5,299 | 1995 |
| 9 | [Tarmac](https://www.tamtam.ai/c/tarmac) (tarmac.com)<br>Leading UK company providing sustainable building materials, asphalt, cement, concrete, and infrastructure services for major construction projects. | Construction | 🇬🇧 Solihull | 4,393 | 2015 |
| 10 | [Sellafield Ltd](https://www.tamtam.ai/c/sellafield-ltd) (careers.sellafieldsite.co.uk)<br>A global leader in nuclear engineering, setting international standards in high-hazard reduction and pioneering nuclear power generation for electricity | Chemical Manufacturing | 🇬🇧 Risley | 4,333 | 1947 |
| 11 | [Anglian Water Services](https://www.tamtam.ai/c/anglian-water-services) (anglianwater.co.uk)<br>Supply clean water and recycling services to millions in dry regions, ensuring sustainable water management and availability. | Utilities | 🇬🇧 Huntingdon | 4,126 |  |
| 12 | [Kirklees Council](https://www.tamtam.ai/c/kirklees-council) (linktr.ee)<br>Providing public services and governance through elected leadership, supporting community needs across children, health, resources, and local development sectors. | Government Relations Services | 🇬🇧 Huddersfield | 4,102 |  |
| 13 | [Cornwall Council](https://www.tamtam.ai/c/cornwall-council) (cornwall.gov.uk)<br>Provide comprehensive public services including care, infrastructure, housing, and community support across a large rural county with strong local partnerships. | Government Administration | 🇬🇧 Truro | 4,087 |  |
| 14 | [Southwark Council](https://www.tamtam.ai/c/southwark-council) (southwark.gov.uk)<br>Local government focused on enhancing community quality of life through investment, workforce development, and improving safety, cleanliness, and accessibility. | Government Administration | 🇬🇧 London | 3,630 |  |
| 15 | [Yorkshire Water](https://www.tamtam.ai/c/yorkshire-water) (yorkshirewater.com)<br>Manage water supply, wastewater services, protect environment, support communities and economy, ensuring clean water and sanitation across Yorkshire region. | Utilities | 🇬🇧 Bradford | 3,398 | 1989 |
| 16 | [London Borough of Lambeth](https://www.tamtam.ai/c/london-borough-of-lambeth) (beacons.ai)<br>Providing planning, social work, housing, and education services to a diverse community of over 300,000 residents and businesses. | Government Administration | 🇬🇧 London | 3,148 | 1965 |
| 17 | [Newcastle City Council](https://www.tamtam.ai/c/newcastle-city-council) (new.newcastle.gov.uk)<br>Local government providing public services and governance for Newcastle upon Tyne, representing 78 councillors across 26 wards serving residents. | Government Administration | 🇬🇧 Newcastle upon Tyne | 3,140 | 1974 |
| 18 | [Biffa](https://www.tamtam.ai/c/biffa) (biffa.co.uk)<br>Provides collection, treatment, recycling, and energy generation services. Helps businesses and households with waste management and sustainability goals. | Environmental Services | 🇬🇧 High Wycombe | 3,127 | 1912 |
| 19 | [Southern Water](https://www.tamtam.ai/c/southern-water) (southernwater.co.uk)<br>Supply drinking water and treat wastewater for millions in South East England, focusing on sustainability and resilience amid climate challenges. | Utilities | 🇬🇧 Worthing | 2,927 |  |
| 20 | [London Borough of Hackney](https://www.tamtam.ai/c/london-borough-of-hackney) (hackney.gov.uk)<br>A high-performing local authority in the UK, focusing on residents to make Hackney fairer, safer, and more sustainable through excellent services and thriving businesses | Government Administration | 🇬🇧 London | 2,896 |  |
| 21 | [Salford City Council](https://www.tamtam.ai/c/salford-city-council) (salford.gov.uk)<br>provides comprehensive public services and facilities to residents, supports economic growth, housing development, and community well-being in Salford. | Government Administration | 🇬🇧 Salford | 2,714 |  |
| 22 | [ACS](https://www.tamtam.ai/c/acs-poole) (acstesting.co.uk)<br>Providing materials testing, consultancy, and geo-environmental services to the Building, Construction, and Civil Engineering industries across the South of England | Construction | 🇬🇧 Poole | 2,708 | 1987 |
| 23 | [Portsmouth City Council](https://www.tamtam.ai/c/portsmouth-city-council) (portsmouth.gov.uk)<br>Providing local government services including news updates, event information, applications, payments, bookings, and reporting for community residents. | Government Administration | 🇬🇧 Portsmouth | 2,681 | 1997 |
| 24 | [Hull City Council](https://www.tamtam.ai/c/hull-city-council) (hull.gov.uk)<br>Providing over 400 public services to residents, managing cultural assets, supporting city redevelopment, and overseeing local governance and community investment. | Government Administration | 🇬🇧 Hull | 2,681 |  |
| 25 | [Cheshire West and Chester Council](https://www.tamtam.ai/c/cheshire-west-and-chester-council) (cheshirewestandchester.gov.uk)<br>Unitary authority formed in 2009, delivering customer-focused services in Cheshire West and Chester, emphasizing value for money and best practices | Government Administration | 🇬🇧 Chester | 2,584 | 2009 |
| 26 | [Worcestershire County Council](https://www.tamtam.ai/c/worcestershire-county-council) (worcestershire.gov.uk)<br>Local government focusing on economic growth, child and family welfare, environmental preservation, and improving health and well-being of residents. | Government Administration | 🇬🇧 Worcester | 2,517 |  |
| 27 | [AO](https://www.tamtam.ai/c/ao-bolton) (ao-jobs.com)<br>Sells a full range of electricals online, including white goods and mobile services, with its own logistics and recycling plant for a circular approach. | Retail | 🇬🇧 Bolton | 2,488 | 2000 |
| 28 | [Stoke-on-Trent City Council](https://www.tamtam.ai/c/stoke-on-trent-city-council) (stoke.gov.uk)<br>Local government focused on improving city services, enhancing customer satisfaction, and fostering a strong, ambitious, and innovative workforce. | Government Administration | 🇬🇧 Stoke-on-Trent | 2,386 | 1910 |
| 29 | [Walsall Council](https://www.tamtam.ai/c/walsall-council) (go.walsall.gov.uk)<br>Local authority providing waste collection, planning, leisure, business support, and community services to residents in Walsall borough. | Government Administration | 🇬🇧 Walsall | 2,315 |  |
| 30 | [North Tyneside Council](https://www.tamtam.ai/c/north-tyneside-council) (northtyneside.gov.uk)<br>Local government authority providing representation, community services, employment, and fostering diversity and inclusion within North Tyneside borough. | Government Administration | 🇬🇧 Cobalt Business Park | 2,229 | 1974 |
| 31 | [EMR](https://www.tamtam.ai/c/emr-warrington) (uk.emrgroup.com)<br>Global leader in metal recycling since the 1950s, with over 130 sites worldwide Recycles 10 million tonnes annually into 200+ sustainable raw materials | Environmental Services | 🇬🇧 Warrington | 2,192 | 1950 |
| 32 | [Dudley Council](https://www.tamtam.ai/c/dudley-council) (dudley.gov.uk)<br>Local government providing essential public services, managing community resources, supporting residents, and fostering economic opportunities across multiple towns. | Government Administration | 🇬🇧 Dudley | 2,183 | 1974 |
| 33 | [Sefton Council](https://www.tamtam.ai/c/sefton-council) (sefton.gov.uk)<br>Providing essential local government services, supporting residents, businesses, and visitors across diverse urban and coastal communities in Sefton. | Government Administration | 🇬🇧 Bootle | 2,147 | 1974 |
| 34 | [London Borough of Waltham Forest](https://www.tamtam.ai/c/london-borough-of-waltham-forest) (walthamforest.gov.uk)<br>Local government focused on cultural heritage, community diversity, urban regeneration, and improving quality of life for residents. | Government Administration | 🇬🇧 London | 2,136 | 1965 |
| 35 | [Lanes Group](https://www.tamtam.ai/c/lanes-group) (lanesgroup.com)<br>A diversified wastewater solutions provider offering drainage, rail maintenance, sewer rehabilitation, and environmental services with a focus on innovation and service excellence | Utilities | 🇬🇧 Leeds | 2,125 | 1992 |
| 36 | [London Borough of Barking and Dagenham](https://www.tamtam.ai/c/london-borough-of-barking-and-dagenham) (lbbd.gov.uk)<br>A growing London borough investing in physical infrastructure, community, housing, a film studio, a university campus, and a Youth Zone Visit website for more information | Government Administration | 🇬🇧 London | 2,002 | 1965 |
| 37 | [Swindon Borough Council](https://www.tamtam.ai/c/swindon-borough-council) (swindon.gov.uk)<br>Local government providing education, social care, highways, waste management, economic regeneration, libraries, transport, and support services to residents. | Government Administration | 🇬🇧 Swindon | 1,982 |  |
| 38 | [Central Bedfordshire Council](https://www.tamtam.ai/c/central-bedfordshire-council) (centralbedfordshire.gov.uk)<br>Local government providing community services, fostering collaboration, supporting employee development, managing resources efficiently, and enhancing quality of life for residents. | Government Administration | 🇬🇧 Chicksands | 1,960 | 2009 |
| 39 | [Cavendish Nuclear](https://www.tamtam.ai/c/cavendish-nuclear) (cavendishnuclear.com)<br>A leading nuclear services provider with international presence, specializing in innovative solutions across the nuclear energy life cycle | Engineering Services | 🇬🇧 Birchwood | 1,908 |  |
| 40 | [NWG (Northumbrian Water Group)](https://www.tamtam.ai/c/nwg-northumbrian-water-group) (nwl.co.uk)<br>Provides water and sewerage services to millions in North East and South East England, focusing on customer service and reliability. | Utilities | 🇬🇧 Durham | 1,866 |  |
| 41 | [Solihull Metropolitan Borough Council](https://www.tamtam.ai/c/solihull-metropolitan-borough-council) (solihull.gov.uk)<br>Local government providing public services, community support, and strategic partnerships to improve health, safety, prosperity, and quality of life for residents. | Government Administration | 🇬🇧 Solihull | 1,844 | 1974 |
| 42 | [Harsco Environmental](https://www.tamtam.ai/c/harsco-environmental) (harsco-environmental.com)<br>Global leader in environmental services and solutions for the steel industry, focusing on safety, sustainability, and extracting value from waste | Environmental Services | 🇬🇧 Leatherhead | 1,834 | 1853 |
| 43 | [South Staffordshire Plc](https://www.tamtam.ai/c/south-staffordshire-plc) (south-staffordshire.com)<br>Integrated services group operating regulated water supply businesses and offering waste, infrastructure, compliance, software, and water logistics solutions. | Utilities | 🇬🇧 Walsall | 1,822 |  |
| 44 | [City of York Council](https://www.tamtam.ai/c/city-of-york-council) (york.gov.uk)<br>A municipal organization in York delivering essential services to residents, managing properties, supporting businesses, and caring for vulnerable individuals | Government Administration | 🇬🇧 York | 1,792 |  |
| 45 | [Wessex Water](https://www.tamtam.ai/c/wessex-water) (wessexwater.co.uk)<br>Regional water and sewage treatment services in southwest England, including engineering, construction, property development, waste management, and renewable energy. | Utilities | 🇬🇧 Bath | 1,765 |  |
| 46 | [Warrington Borough Council](https://www.tamtam.ai/c/warrington-borough-council) (warrington.gov.uk)<br>Local government focused on economic growth, social inclusion, community resilience, workforce wellbeing, and supporting vulnerable populations within the borough. | Government Administration | 🇬🇧 Warrington | 1,680 | 1974 |
| 47 | [Safetykleen](https://www.tamtam.ai/c/safetykleen) (safetykleeninternational.com)<br>Leading provider of chemical cleaning & environmental solutions since 1973, offering products and services to enhance productivity, quality, compliance, and sustainability | Environmental Services | 🇬🇧 Brentford | 1,514 |  |
| 48 | [Keltbray](https://www.tamtam.ai/c/keltbray) (keltbray.com)<br>UK specialist engineering contractor, offering engineering, construction, demolition, decommissioning, remediation, environmental services and reinforced concrete frame solutions | Construction | 🇬🇧 London | 1,500 | 1976 |
| 49 | [Magnox Ltd](https://www.tamtam.ai/c/magnox-ltd) (gov.uk)<br>A UK-based company responsible for managing and operating 12 nuclear sites and a hydroelectric plant, focusing on electricity generation, defuelling, and decommissioning activities | Utilities | 🇬🇧 South Gloucestershire | 1,474 |  |
| 50 | [JN Bentley](https://www.tamtam.ai/c/jn-bentley) (mottmacbentley.co.uk)<br>A UK-based company part of a global consultancy, providing feasibility, design, construction, and engineering services with a turnover exceeding £300 million | Civil Engineering | 🇬🇧 Skipton | 1,425 | 1972 |
| 51 | [South West Water](https://www.tamtam.ai/c/south-west-water) (southwestwater.co.uk)<br>Provision of high-quality drinking water and wastewater services, maintaining bathing waters, and protecting coastal and river environments in southwest England. | Utilities | 🇬🇧 Exeter | 1,371 | 1989 |
| 52 | [SUEZ UK](https://www.tamtam.ai/c/suez-uk) (suez.co.uk)<br>Provides drinking water, wastewater treatment, waste collection, waste recovery, and renewable energy generation for communities worldwide. | Environmental Services | 🇬🇧 Maidenhead | 1,369 | 1988 |
| 53 | [Network Plus](https://www.tamtam.ai/c/network-plus) (networkplus.co.uk)<br>Leading UK utility and infrastructure service provider with a workforce of over 3,500, focusing on health and safety, delivering services nationwide | Utilities | 🇬🇧 Worsley | 1,306 | 2000 |
| 54 | [MITIE Security Ltd.](https://www.tamtam.ai/c/mitie-security-ltd)<br>Strategic outsourcing and energy services provider offering integrated facilities, energy, and property services to support client buildings and infrastructure | Security and Investigations | 🇬🇧 Salford | 1,270 |  |
| 55 | [West Northamptonshire Council](https://www.tamtam.ai/c/west-northamptonshire-council) (westnorthants.gov.uk)<br>Local government authority providing public services, community support, and governance for residents of West Northamptonshire area. | Government Administration | 🇬🇧 Northampton | 1,259 |  |
| 56 | [Aggregate Industries UK](https://www.tamtam.ai/c/aggregate-industries-uk) (aggregate.com)<br>Supplier of sustainable construction materials focused on creating better built environments through environmentally responsible approaches and innovation. | Construction | 🇬🇧 Markfield | 1,245 | 1858 |
| 57 | [GTC](https://www.tamtam.ai/c/gtc) (gtc-uk.co.uk)<br>The company is a leading utility infrastructure provider for house builders, developers, landowners, consultants, and public sector developers nationwide | Utilities | 🇬🇧 Bury St Edmunds | 1,238 | 1995 |
| 58 | [Heidelberg Materials UK](https://www.tamtam.ai/c/heidelberg-materials-uk) (heidelbergmaterials.co.uk)<br>This company is a major supplier of lower carbon heavy building materials, including aggregates, asphalt, cement, and concrete, to the construction industry | Wholesale Building Materials | 🇬🇧 Maidenhead | 1,235 | 1964 |
| 59 | [Redcar & Cleveland Borough Council](https://www.tamtam.ai/c/redcar-and-cleveland-borough-council) (redcar-cleveland.gov.uk)<br>Public sector organization focused on improving quality of life by prioritizing children, health, employment, environment, and community involvement through collaborative efforts | Government Administration | 🇬🇧 Redcar | 1,220 |  |
| 60 | [FM Conway Ltd](https://www.tamtam.ai/c/fm-conway-ltd) (fmconway.co.uk)<br>Deliver infrastructure services including design, construction, maintenance, recycling, and asphalt production with a focus on sustainability and innovation. | Construction | 🇬🇧 Sevenoaks | 1,217 | 1961 |
| 61 | [Bracknell Forest Council](https://www.tamtam.ai/c/bracknell-forest-council) (bracknell-forest.gov.uk)<br>Local authority providing community services, promoting inclusivity, ambition, and continuous learning to support sustainable and resilient local communities. | Government Administration | 🇬🇧 Bracknell | 1,210 |  |
| 62 | [Morrison Water Services](https://www.tamtam.ai/c/morrison-water-services) (mgroupltd.com)<br>This company helps clients maintain resilient assets, ensuring water flow and safe wastewater disposal in local communities with a national workforce | Utilities | 🇬🇧 Stevenage | 1,133 |  |
| 63 | [Viridor](https://www.tamtam.ai/c/viridor) (viridor.co.uk)<br>A UK-based company specializing in resource and waste management, committed to becoming climate positive by 2045, aiming to eliminate waste | Waste Treatment and Disposal | 🇬🇧 Taunton | 1,096 | 1957 |
| 64 | [United Kingdom National Nuclear Laboratory](https://www.tamtam.ai/c/united-kingdom-national-nuclear-laboratory) (uknnl.com)<br>National laboratory specializing in nuclear science focused on clean energy, health, environmental restoration, and security for societal benefit. | Research Services | 🇬🇧 Warrington | 1,095 |  |
| 65 | [MWH Treatment](https://www.tamtam.ai/c/mwh-treatment) (mwhtreatment.com)<br>A leading UK water sector Design and Build provider with a heritage dating back to 1820, offering end-to-end services for major projects and maintenance | Construction | 🇬🇧 Stockport | 1,048 |  |
| 66 | [Restore plc](https://www.tamtam.ai/c/restore-plc) (restoreplc.com)<br>The company specializes in information and data management, technology recycling, and commercial relocation services, including data storage, digitization, secure data erasure, and IT recycling | Facilities Services | 🇬🇧 Rainham | 1,048 |  |
| 67 | [Affinity Water](https://www.tamtam.ai/c/affinity-water) (affinitywater.co.uk)<br>Supply safe, high-quality drinking water daily to millions of customers, focusing on community service and operational excellence. | Utilities | 🇬🇧 Hatfield | 1,043 |  |
| 68 | [Torbay Council](https://www.tamtam.ai/c/torbay-council) (torbay.gov.uk)<br>A unitary local authority in the UK with a population of over 130,000, providing services in education, highways, waste management, economic development, libraries, and planning | Government Administration | 🇬🇧 Torquay | 1,031 | 1968 |
| 69 | [Binnies](https://www.tamtam.ai/c/binnies) (binnies.com)<br>In partnership with industry leaders, we offer comprehensive solutions for water management, infrastructure planning, and environmental sustainability to benefit communities now and in the future | Civil Engineering | 🇬🇧 Redhill | 1,012 | 2022 |
| 70 | [Eurocell plc](https://www.tamtam.ai/c/eurocell-plc) (eurocell.co.uk)<br>Leading UK manufacturer and distributor of PVC-U profiles with a focus on sustainable design and recycling, offering a wide range of building products and services | Wholesale Building Materials | 🇬🇧 South Normanton | 998 | 1974 |
| 71 | [Oxford City Council](https://www.tamtam.ai/c/oxford-city-council) (oxford.gov.uk)<br>Focus on sustainable urban development, housing, community engagement, environmental initiatives, and efficient local government services for diverse population. | Government Administration | 🇬🇧 Oxford | 985 | 1974 |
| 72 | [FCC Environment](https://www.tamtam.ai/c/fcc-environment) (fccenvironment.co.uk)<br>A leading UK waste management company emphasizing recycling, minimizing landfill waste, and generating green energy through processing waste as a resource | Environmental Services | 🇬🇧 Doncaster | 963 |  |
| 73 | [SOCOTEC UK & Ireland](https://www.tamtam.ai/c/socotec-uk-and-ireland) (socotec.co.uk)<br>Empowering ambitious businesses through testing, inspection, compliance, technical expertise, real estate, and risk management, with a focus on innovation and sustainable delivery. | Environmental Services | 🇬🇧 Burton Upon Trent | 950 | 2017 |
| 74 | [Ground Control](https://www.tamtam.ai/c/ground-control-billericay) (ground-control.co.uk)<br>Maintaining external grounds and landscapes, enhancing biodiversity, and providing services like winter gritting and EV charging for commercial properties while pursuing sustainability goals. | Environmental Services | 🇬🇧 Billericay | 910 | 1973 |
| 75 | [D S Smith Packaging](https://www.tamtam.ai/c/d-s-smith-packaging) (dssmith-packaging.com)<br>Leading UK corrugated packaging manufacturer offering a wide range of packaging solutions for various industries, providing advisory services and global perspective | Packaging and Containers Manufacturing | 🇬🇧 Maidenhead | 901 | 1940 |
| 76 | [Careys](https://www.tamtam.ai/c/careys) (careys.co)<br>Family-owned construction business operating in UK and Ireland, focusing on quality, safety, innovation, and community impact. | Construction | 🇬🇧 King's Cross | 870 | 1969 |
| 77 | [MAG (Mines Advisory Group)](https://www.tamtam.ai/c/mag-mines-advisory-group) (maginternational.org)<br>Clearance of land contaminated by explosives, reducing civilian risks, and creating safe conditions for development in conflict-affected areas. | Non-profit Organizations | 🇬🇧 Manchester | 841 | 1989 |
| 78 | [Mott MacDonald Bentley \| MMB](https://www.tamtam.ai/c/mott-macdonald-bentley-mmb) (mottmacbentley.co.uk)<br>Fully-integrated civil engineering design-and-construct company formed by JN Bentley and Mott MacDonald, delivering water sector projects with strategic focus and client relationships | Civil Engineering | 🇬🇧 Skipton | 791 |  |
| 79 | [JBA Consulting](https://www.tamtam.ai/c/jba-consulting) (jbaconsulting.com)<br>Specializing in climate change resilience, we offer interdisciplinary solutions for clients worldwide by combining analytical, engineering, social, and nature-inspired approaches | Environmental Services | 🇬🇧 Skipton | 784 | 1995 |
| 80 | [South East Water UK](https://www.tamtam.ai/c/south-east-water-uk) (southeastwater.co.uk)<br>Providing high-quality drinking water to 22 million customers in the south east of England through a vast network of pipes Vision to be preferred water supplier and employer | Utilities | 🇬🇧 Snodland | 740 | 1992 |
| 81 | [Norse Group](https://www.tamtam.ai/c/norse-group)<br>A leading service provider offering facilities management, property services, and specialist care facilities through joint venture partnerships across England and Wales | Facilities Services | 🇬🇧 Norwich | 734 | 1988 |
| 82 | [Nuclear Waste Services](https://www.tamtam.ai/c/nuclear-waste-services) (nuclearwasteservices.uk)<br>Managing UK's nuclear waste sustainably and innovatively, bringing together leading capabilities for safe and secure waste management for future generations | Environmental Services | 🇬🇧 Harwell Campus | 686 |  |
| 83 | [BRADFORD METROPOLITAN DISTRICT COUNCIL](https://www.tamtam.ai/c/bradford-metropolitan-district-council)<br>Hospital & health care company located in West Yorkshire, UK Part of the local district council, serving the community's healthcare needs | Hospitals and Health Care | 🇬🇧 Bingley | 680 |  |
| 84 | [idverde UK](https://www.tamtam.ai/c/idverde-uk) (idverde.co.uk)<br>A leading green service provider in the UK, offering a wide range of horticulture and environmental management services nationwide | Environmental Services | 🇬🇧 Coventry | 643 |  |
| 85 | [Adler & Allan](https://www.tamtam.ai/c/adler-and-allan) (adlerandallan.co.uk)<br>Environmental and energy infrastructure services focused on asset management, maintenance, emergency response, and supporting sustainability and operational risk reduction. | Environmental Services | 🇬🇧 Harrogate | 636 | 1926 |
| 86 | [Norwich City Council](https://www.tamtam.ai/c/norwich-city-council) (norwich.gov.uk)<br>Local government authority providing municipal services, community support, urban planning, housing, and public amenities for Norwich residents. | Government Administration | 🇬🇧 Norwich | 627 | 1403 |
| 87 | [Selwood Ltd](https://www.tamtam.ai/c/selwood-ltd) (selwood.co.uk)<br>Leading UK company providing pump rental services and manufacturing high-quality pumps for water, environmental, and construction sectors worldwide. | Equipment Rental Services | 🇬🇧 Eastleigh | 623 | 1946 |
| 88 | [BUUK Infrastructure](https://www.tamtam.ai/c/buuk-infrastructure) (bu-uk.co.uk)<br>The leading independent provider of last-mile utility networks in the UK, pioneering ownership in gas, electricity, water, broadband, and community heat sectors | Utilities | 🇬🇧 Bury St Edmunds | 589 |  |
| 89 | [Atlantica Sustainable Infrastructure Plc](https://www.tamtam.ai/c/atlantica-sustainable-infrastructure-plc) (atlantica.com)<br>Atlantica is a sustainable infrastructure company investing in renewable energy, storage, natural gas, transmission lines, water assets for stable cash flows and growth | Renewables & Environment | 🇬🇧 London | 586 | 2014 |
| 90 | [Chelmsford City Council](https://www.tamtam.ai/c/chelmsford-city-council) (chelmsford.gov.uk)<br>A city council serving Chelmsford's growing population, offering support for businesses and residents with a focus on creating a fair, green, safe, and well-connected community | Government Administration | 🇬🇧 Chelmsford | 574 | 1974 |
| 91 | [Cedo](https://www.tamtam.ai/c/cedo) (cedo.com)<br>A market leader in consumer household cleaning products, focusing on innovation, environmentally friendly practices, and recycling post-consumer waste into new products | Manufacturing | 🇬🇧 Telford | 571 | 1965 |
| 92 | [Glendale](https://www.tamtam.ai/c/glendale) (glendale-services.co.uk)<br>National provider of green services including grass cutting and arboriculture, dedicated to excellence, transparency, and building lasting relationships with clients and employees | Environmental Services | 🇬🇧 Chorley | 534 | 1990 |
| 93 | [Avove Utilities](https://www.tamtam.ai/c/avove-utilities) (avove.co.uk)<br>Expert partner transforming UK utilities infrastructure to improve communities with sustainable solutions, leaving a positive legacy while embracing innovation and engagement | Utilities | 🇬🇧 Chorley | 523 | 2022 |
| 94 | [Trant Engineering Ltd](https://www.tamtam.ai/c/trant-engineering-ltd) (trant.co.uk)<br>A leading UK engineering company with a diverse portfolio in Energy, Process & Water, Defence, and Nuclear sectors, offering innovative engineering solutions globally | Civil Engineering | 🇬🇧 Southampton | 501 | 1958 |
| 95 | [APEM](https://www.tamtam.ai/c/apem-stockport) (apemltd.com)<br>Environmental and geospatial consultancy, specializing in marine, freshwater, terrestrial ecology, and geospatial data. A world-class environmental group. | Environmental Services | 🇬🇧 Stockport | 500 | 1987 |
| 96 | [Rhodar Ltd](https://www.tamtam.ai/c/rhodar-ltd) (rhodar.co.uk)<br>Leading company asbestos removal, demolition, remediation, and passive fire protection services across the UK, delivering high-end projects for various sectors. | Environmental Services | 🇬🇧 Leeds | 500 | 1976 |
| 97 | [Temple](https://www.tamtam.ai/c/temple) (ramboll.com)<br>Providing sustainable architecture, engineering, and consultancy services with expanded global reach and multidisciplinary solutions through Ramboll partnership. | Environmental Services | 🇬🇧 London | 493 | 1997 |
| 98 | [Nuclear Decommissioning Authority](https://www.tamtam.ai/c/nuclear-decommissioning-authority) (gov.uk)<br>Leading nuclear clean-up organization in the UK, responsible for decommissioning 17 sites safely, securely, and cost-effectively to leave them ready for future use | Government Relations Services | 🇬🇧 Moor Row | 487 | 2005 |
| 99 | [Restore Information Management](https://www.tamtam.ai/c/restore-information-management) (restore.co.uk)<br>Specializes in secure physical document storage, digital transformation, and data management to help businesses protect and access information efficiently. | Information Services | 🇬🇧 Rainham | 475 |  |
| 100 | [Crawley Borough Council](https://www.tamtam.ai/c/crawley-borough-council) (crawley.gov.uk)<br>Provision of waste management, housing, planning, leisure, taxation, environmental, and community services for a town of 100,000 people. | Government Administration | 🇬🇧 Crawley | 466 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in England

- [The largest companies in England](https://www.tamtam.ai/l/largest-companies-england) (32,641)
- [Retail chains in England](https://www.tamtam.ai/l/retail-chains-england) (2,917)
- [Manufacturers in England](https://www.tamtam.ai/l/manufacturers-england) (1,794)
- [Companies with in-house R&D in England](https://www.tamtam.ai/l/r-and-d-companies-england) (1,703)
- [Retail companies in England](https://www.tamtam.ai/l/retail-companies-england) (1,415)
- [Hotel and hospitality groups in England](https://www.tamtam.ai/l/hospitality-groups-england) (1,273)
- [Education providers in England](https://www.tamtam.ai/l/education-companies-england) (1,081)
- [Hardware manufacturers in England](https://www.tamtam.ai/l/hardware-companies-england) (1,067)
- [Wellness and Fitness Services companies in England](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-england) (1,032)
- [Critical infrastructure operators in England](https://www.tamtam.ai/l/critical-infrastructure-operators-england) (1,029)
- [Hospitality companies in England](https://www.tamtam.ai/l/hospitality-companies-england) (1,025)
- [Family-owned companies in England](https://www.tamtam.ai/l/family-owned-companies-england) (1,014)
- [Distributors and wholesalers in England](https://www.tamtam.ai/l/distributors-and-wholesalers-england) (938)
- [Healthcare providers in England](https://www.tamtam.ai/l/healthcare-providers-england) (810)
- [Insurance companies in England](https://www.tamtam.ai/l/insurance-companies-england) (699)
- [Consumer goods companies in England](https://www.tamtam.ai/l/consumer-goods-companies-england) (671)
- [Construction companies in England](https://www.tamtam.ai/l/construction-companies-england) (667)
- [Hospitals and Health Care companies in England](https://www.tamtam.ai/l/hospitals-and-health-care-companies-england) (649)
- [Public sector organisations in England](https://www.tamtam.ai/l/public-sector-organisations-england) (638)
- [Food and beverage companies in England](https://www.tamtam.ai/l/food-and-beverage-companies-england) (635)
- [Food and Beverage Services companies in England](https://www.tamtam.ai/l/food-and-beverage-services-companies-england) (606)
- [Food and Beverage Manufacturing companies in England](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-england) (582)
- [Corporate groups and holding companies in England](https://www.tamtam.ai/l/holding-companies-england) (578)
- [Restaurants companies in England](https://www.tamtam.ai/l/restaurants-companies-england) (506)

## The same list elsewhere in United Kingdom

- [Environmental services companies in Scotland](https://www.tamtam.ai/l/environmental-services-companies-scotland) (27)
- [Environmental services companies in London](https://www.tamtam.ai/l/environmental-services-companies-london-united-kingdom) (31)

## The same list elsewhere

- [Environmental services companies in the world](https://www.tamtam.ai/l/environmental-services-companies-in-the-world) (4,213)
- [Environmental services companies in Europe](https://www.tamtam.ai/l/environmental-services-companies-in-europe) (2,448)

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Source: https://www.tamtam.ai/l/environmental-services-companies-england