| Taylored Drainage Solutions Ltd | Hoddesdon | 2020 |
| Taylors Environmental and Recycling Services Limited | Hull | 2009 |
| Taylors Industrial Services Limited | Aberdeen | 1991 |
| Taylors Waste Management Limited | Sunderland | 2022 |
| TB Lining Services Ltd | Chichester | 2026 |
| TB Maintenance Ltd | Ivybridge | 2026 |
| TB Waste Management & Skip Hire Ltd | Blaydon-On-Tyne | 2021 |
| Tbar Group Limited | Cardiff | 2015 |
| TBH Waste Limited | Maidstone | 2024 |
| TBR Transport Ltd | Morden | 2021 |
| TBS Hygiene Limited | Great Dunmow | 2007 |
| TBS Recycling Center Wales Ltd | Milford Haven | 2022 |
| TBS Skip Hire & Recycling Ltd | Milford Haven | 2022 |
| TBW3 Limited | Oldham | 2013 |
| TC (Waste) Ltd | London | 2026 |
| TCC Metals Ltd | Middlesbrough | 2023 |
| TCC Plant Ltd | Middlesbrough | 2020 |
| TCJ Waste Solutions Ltd | Dursley | 2017 |
| TCM Draincare Ltd | Keighley | 2022 |
| TCM Enviro Ltd | Birmingham | 2026 |
| TCM Soil Solutions Limited | Colchester | 2014 |
| TCP Circular (UK) Limited | Aldershot | 2026 |
| TCR Services Ltd | Whitchurch | 2018 |
| TD Metal Recycling Ltd | Studley | 2025 |
| TD Waste Removal Ltd | Studley | 2025 |
| Tdavies Utilities Ltd | Rotherham | 2014 |
| TDS (Berkshire) Limited | Hoddesdon | 2021 |
| TDS Cleanse Limited | Chatham | 2025 |
| TE Outdoor Services Ltd | Broxbourne | 2020 |
| Team on the Go Ltd | Telford | 2024 |
| Tech Asees Ltd | Southall | 2025 |
| Tech Clear Solutions Ltd | Hounslow | 2026 |
| Tech Lifecycle Services Ltd | Bristol | 2025 |
| Tech Recycle Europe Limited | London | 2014 |
| Tech-Cycle Solutions Ltd | Hollinwood | 2020 |
| Tech-Takeback Ltd | Burgess Hill | 2017 |
| Techcycle Innovations Ltd | Wolverhampton | 2024 |
| Techemet Limited | Tamworth | 2003 |
| Technamara Ltd | Forres | 2024 |
| Technical Drain Solutions Limited | Gravesend | 2007 |
| Technical Recovery Services Limited | St Helens | 2013 |
| Technical Waste Services Limited | Wylam | 2017 |
| Technical Waste Solutions (Holdings) Ltd | Bury St Edmunds | 2014 |
| Technical Waste Solutions Limited | Ingham | 2003 |
| Technics Supplement Services Ltd | Sheffield | 2024 |
| Technidrains Civils & Utilities Ltd | Basingstoke | 2021 |
| Techno Guard Limited | Stafford | 2021 |
| Technologic Specialised Recycling Ltd | Epping | 2022 |
| Technology 365 Disposals Ltd | Manchester | 2025 |
| Technology Treasures Limited | Birmingham | 2025 |
| Technosync Ltd | Chippenham | 2017 |
| TED Bradley Automotive Ltd | Lancaster | 2025 |
| TEDI2008 Limited | Dagenham | 2025 |
| Teds Recycling Ltd | London | 2024 |
| Teds Waste Services Ltd | Leeds | 2025 |
| Teecallchur Limited | London | 2025 |
| Teece Clearance Ltd | Loughton | 2024 |
| Teeman Removals Ltd | Liverpool | 2025 |
| Tees Recovery Service Ltd | Stockton-On-Tees | 2025 |
| Tees Valley Contractors Limited | Middlesbrough | 2026 |
| Tees Valley Energy Recovery Limited | Redcar | 2025 |
| Tees Waste Ltd | Thornaby-On-Tees | 2024 |
| Teesdale Conservation Volunteers Limited | Barnard Castle | 2006 |
| Teesside Architectural Salvage Ltd | Stockton-On-Tees | 2008 |
| Teesside Power Limited | London | 2017 |
| Teesstone Group Ltd | Redcar | 2018 |
| Teesworks Limited | Durham | 2019 |
| Teff Drains Ltd | Westgate-On-Sea | 2024 |
| TEG Waste Management Ltd | Dunmow | 2019 |
| Teifi Wells Ltd | Lampeter | 2021 |
| Teign Village Water Community Interest Company | Newton Abbot | 2013 |
| Teign Wash & Waste Ltd | Teignmouth | 2021 |
| Tekmet Ltd | Liverpool | 2026 |
| Tekspert Ltd | Chorley | 2025 |
| Telford & Wrekin Services Limited | Cheltenham | 2000 |
| Telford Toilet Hire Ltd | Shrewsbury | 2026 |
| Telluric Land Remediation Limited | Cowbridge | 2003 |
| Telluric Remediation Management Limited | Ilkeston | 2003 |
| Tellwrights Limited | Stoke-On-Trent | 2025 |
| Telstar Grab Hire Ltd | Gloucester | 2018 |
| Templecroft Investments Two Limited | Sheffield | 2013 |
| Temporary Water Solutions Limited | Maldon | 2021 |
| Tenement Tipping Ltd | Glasgow | 2026 |
| Terbuholden Ltd | London | 2025 |
| Tereco Limited | Co Tyrone | 2006 |
| Terminal Hardware Ltd | London | 2026 |
| Terncove Limited | Denny | 2010 |
| Terra & Vale Limited | London | 2025 |
| Terra Environmental Limited | Farnham | 2019 |
| Terra VAC (UK) Limited | Wakefield | 2005 |
| Terra Verde Services Limited | Epping | 2024 |
| Terra Waste Limited | London | 2024 |
| Terrabrook Solutions Ltd | London | 2025 |
| Terracycle UK Limited | Slough | 2009 |
| Terrae Novo Limited | Northallerton | 2021 |
| Terram Energy Limited | Andover | 2023 |
| Terranova Environmental Group Limited | Saffron Walden | 2025 |
| Terrasure Solutions Ltd | Dagenham | 2025 |
| Terravore Recycle Ltd | London | 2026 |
| Terrier Group N.I. Ltd | Carrickfergus | 2017 |