| Enviro-Tech Consult Services Limited | London | 2012 |
| Enviro-Tek Recycling Ltd | Harlow | 2006 |
| Enviro-Tek Rentals Limited | Harlow | 2017 |
| Enviro-Tek Waste Management Limited | Harlow | 2009 |
| Enviro-Waste Limited | London | 1991 |
| ENVIRO24 Limited | London | 2024 |
| ENVIRO24 Midlands Limited | Kidderminster | 2025 |
| Enviroability Trading Limited | Ross-On-Wye | 2015 |
| Enviroactive Limited | Abergavenny | 2004 |
| Enviroawards Connect Limited | Dartford | 2026 |
| Enviroblue Ltd | Ruislip | 2024 |
| Envirocare (NW) Limited | Nantwich | 2016 |
| Envirocare Group Limited | Ashford | 2020 |
| Enviroclean (Scotland) Limited | Glasgow | 1997 |
| Enviroclean Contracts Ltd | East Kilbride | 2009 |
| Enviroclean Northern Limited | Glasgow | 2024 |
| Envirocleanse Limited | St Helens | 1998 |
| Enviroclear Waste Recycling Ltd | Erith | 2019 |
| Enviroclothes Limited | Newcastle Upon Tyne | 2009 |
| Envirocon Ltd | Carlisle | 2015 |
| Envirocore Limited | Altrincham | 2016 |
| Envirocraft Waste Management Ltd | Nantwich | 2019 |
| Envirocraft Waste Solutions Limited | Nantwich | 2011 |
| Enviroflow Drainage Ltd | Swanley | 2022 |
| Envirofresh Solutions Ltd | Middlesex | 2013 |
| Envirofuel (SRF) Ltd | Fleetwood | 2011 |
| Envirogen Water Technologies Limited | Alfreton | 1996 |
| Envirogreen Polymers Limited | Newry | 2012 |
| Envirogreen Waste Solutions Ltd | Newry | 2020 |
| Enviroguard (Northwest) Limited | Gloucester | 2006 |
| Envirohaz Circular Waste Limited | Hamilton | 2020 |
| Envirojet Ltd | Leeds | 2025 |
| Enviroknight Services Ltd | Sunderland | 2018 |
| Enviroload Waste Services Ltd | Sheffield | 2017 |
| ENVIROM8 Limited | Coventry | 2018 |
| Enviromine Resources Ltd | London | 2024 |
| Environcom (North West) Ltd. | Newark | 2008 |
| Environcom Limited | Paisley | 2003 |
| Environment Action Limited | Stalybridge | 2023 |
| Environment Controls Ltd | Wimborne | 2021 |
| Environment Ecology Ltd | Northampton | 2025 |
| Environment First Limited | Maidstone | 2001 |
| Environment Remediation Limited | Newton Aycliffe | 2019 |
| Environment Solutions Africa Ltd | Surrey | 2023 |
| Environmental Asbestos Removals Ltd | Liverpool | 2021 |
| Environmental Clearance Services UK Limited | Sutton | 2018 |
| Environmental Concern Limited | Birmingham | 1988 |
| Environmental Conservation Co-Operative Ltd. | Harlow | 1995 |
| Environmental Contracts Limited | Dudley | 2002 |
| Environmental Controls Group Limited | Wimborne | 2021 |
| Environmental Damage Management Limited | Belfast | 2010 |
| Environmental Drain Services Limited | Walsall | 1996 |
| Environmental Drainage Ltd | Southport | 2019 |
| Environmental Drainage Systems Limited | Newton Abbot | 2020 |
| Environmental Earth Sciences International Limited | Bristol | 2006 |
| Environmental Education and Response CIC | Haringey | 2024 |
| Environmental Electronics Ltd | Doncaster | 2020 |
| Environmental Green Group Limited | Darlington | 2021 |
| Environmental Horizons Ltd | Ilford | 2021 |
| Environmental IQ (Holdings) Limited | Lancaster | 2019 |
| Environmental IQ Ltd | Lancaster | 2010 |
| Environmental Landfill Facilities Ltd | Preston | 2012 |
| Environmental Management Services Limited | Walsall | 1996 |
| Environmental Material Management Ltd | Cambridge | 2019 |
| Environmental Packaging + Recycling Ltd | Craigavon | 2003 |
| Environmental Power International (R&D) Limited | Morden | 2015 |
| Environmental Power International (UK R&D) Limited | Morden | 2011 |
| Environmental Product Sales Ltd | Burton-On-Trent | 2019 |
| Environmental Quality Limited | Skegness | 2016 |
| Environmental Reclamation Services Limited | Glasgow | 1994 |
| Environmental Recycling Limited | Moreton In Marsh | 1995 |
| Environmental Recycling Services Limited | Moreton In Marsh | 2000 |
| Environmental Resource Limited | Telford | 2018 |
| Environmental Resourcing Limited | London | 2020 |
| Environmental Services Bolton Ltd | Bolton | 2012 |
| Environmental Services Group Limited | Henley-In-Arden | 2008 |
| Environmental Services Yorkshire Limited | London | 2026 |
| Environmental Sewage Solutions Limited | Newton Abbot | 2014 |
| Environmental Solutions (UK) Limited | Swindon | 1999 |
| Environmental Solutions Midlands Limited | Compton | 2009 |
| Environmental Storage Solutions Limited | Wellingborough, | 2011 |
| Environmental Support Services Limited | Dorking | 2002 |
| Environmental Tankers Limited | Basildon | 2015 |
| Environmental Waste Controls Limited | Prescot | 2003 |
| Environmental Waste Ltd | Manchester | 2025 |
| Environmental Waste Management Limited | Epping | 2020 |
| Environmental Waste Services Limited | Newport | 2017 |
| Environmental Wastewater Solutions Ltd | Edgware | 2019 |
| Environmental Water Services Limited | Oldham | 1990 |
| Environmental Water Solutions Limited | Wotton-Under-Edge | 2003 |
| Enviroo Holdings Limited | Manchester | 2018 |
| Enviroparks (Hirwaun) Limited | Abergavenny | 2005 |
| Enviroparks (Wales) Limited | Abergavenny | 2009 |
| Enviroparts Limited | Leigh | 2016 |
| Enviropath Consulting Limited | London | 2025 |
| Enviroport Limited | Whitchurch | 2025 |
| Envirorod Limited | Chester Le Street | 2018 |
| Envirosafe Cleaning Ltd | Bolton | 2025 |
| Envirosan Limited | Carluke | 1997 |
| Enviroshift Limited | Galashiels | 2026 |