| Tyneside Waste Services Ltd | Jarrow | 2024 |
| Tyre Collections & Disposals Ltd | Halifax | 2022 |
| Tyre House 1 Ltd | Rainham | 2022 |
| Tyre Processing Ltd | Ringwood | 2017 |
| Tyre Processors Ltd | Boston | 2008 |
| Tyre Recycle UK Ltd | Rochdale | 2026 |
| Tyre Recycling Services (Wales) Ltd | Aberdare | 2024 |
| Tyre Shred Disposal Ltd. | Croydon | 1994 |
| Tyreco Waste Services Limited | Maidenhead | 2025 |
| Tyrecycle Group Limited | London | 2025 |
| Tyrecycle NI Limited | Lurgan | 2024 |
| Tyreout Ltd | Southall | 2025 |
| Tyreround Limited | London | 2021 |
| Tyres Solution Ltd | Wednesbury | 2018 |
| TYRES4LIFESOLUTIONS Limited | Cardiff | 2024 |
| Tyrolysis Limited | Maidstone | 2025 |
| Tyrone Glass Recycling Limited | Augher | 2024 |
| Tyrrell Contractors Limited | Spalding | 2009 |
| Tyseley Metal Recycling Limited | Birmingham | 2010 |
| Tyseley Metals Limited | Birmingham | 2009 |
| Tyseley Operations Limited | Stockport | 2022 |
| Tyseren Property Management Limited | Llandrindod Wells | 2002 |
| Tyson-Davies Restoration Ltd | Horsham | 2002 |
| Tytherington Water Company Limited | Salisbury | 2000 |
| U CAN Recycling CIC | Leeds | 2010 |
| U R Recycling Solutions Limited | Henley-On-Thames | 2023 |
| U&S Hire Ltd | Birmingham | 2016 |
| U&U Skips Ltd | Dunstable | 2020 |
| U-Neek Services Ltd | Dundee | 2017 |
| U-Shred Ltd | Stockport | 2008 |
| U.K. BUS Dismantlers Limited | Hereford | 1998 |
| U.K. Metal Processors Limited | Manchester | 1989 |
| U.K. Truck and Plant Sales Ltd. | Ely | 2008 |
| U.T.R Ltd | London | 2006 |
| UBB Waste (Essex) Limited | Doncaster | 2012 |
| Uberwaste Limited | Bristol | 2020 |
| UBH Group Limited | Swanscombe | 2019 |
| Ubico Limited | Cheltenham | 2011 |
| Ubique Utility Solutions Ltd | Shildon | 2024 |
| UBU Environmental Ltd | Manchester | 1998 |
| UE Universal Element Limited | Redhill | 2023 |
| Ugam Supply Ltd | Harrow | 2025 |
| UGW Technology Limited | London | 2026 |
| Uisge Water Limited | Glasgow | 2024 |
| UK Aggregates & Plant Ltd | Macclesfield | 2016 |
| UK Asbestos Ltd | Wellington | 2025 |
| UK Asbestos Removals Limited | Clitheroe | 2022 |
| UK BIN Store Ltd | Oswestry | 2025 |
| UK Capital Drainage Limited | Uxbridge | 2022 |
| UK Cleaning Professionals Academic Service Limited | Wellingborough | 2011 |
| UK Clearance, Salvage and Waste Management Ltd | Shipston-On-Stour | 2024 |
| UK Commercial Group Limited | London | 2010 |
| UK Commercial Waste Ltd | Bristol | 2025 |
| UK Contract Services (UCS) Ltd | London | 2024 |
| UK DH Group Ltd | Isleworth | 2025 |
| UK Drainage Group Limited | Harrow | 2025 |
| UK Drainage Limited | Burton-On-Trent | 2007 |
| UK Drainage Services Ltd | Leeds | 2023 |
| UK Drains Limited | Faversham | 2018 |
| UK Energy Resources Ltd | London | 2023 |
| UK Enviro Services Limited | Lancing | 2022 |
| UK Environmental & Asbestos Solutions Limited | St Helens | 2008 |
| UK Environmental Services (NW) Limited | Chester | 2009 |
| UK Flood Defence Systems Ltd | Weybridge | 2012 |
| UK Hire Solutions Group Limited | Stourbridge, West Midlands | 2021 |
| UK IT Recycling Limited | Shrewsbury | 2004 |
| UK Land Reclaim Ltd | Leominster | 2019 |
| UK Leak Detection Experts Ltd | Stevenage | 2025 |
| UK Liquid Products Limited | Liverpool | 2019 |
| UK Local Textile Recycle Ltd | Cardiff | 2019 |
| UK Management Services Limited | Teignmouth | 2024 |
| UK Metal Recycling Ltd | Hastings | 2022 |
| UK Metals Limited | Maidstone | 2019 |
| UK Nuclear Waste Management Limited | Bolton | 2007 |
| UK Pest Ltd | Wimborne | 2009 |
| UK Plastic Limited | Shrewsbury | 2024 |
| UK Plumbing Works Ltd | Ringwood | 2013 |
| UK Polymers Recycling Ltd | Birmingham | 2022 |
| UK Recovery Unit Ltd | Preston | 2026 |
| UK Recycle Group Ltd | Fareham | 2021 |
| UK Recycle Limited | Tarporley | 2004 |
| UK Recycling Centres Limited | Newport | 2022 |
| UK Recycling Company Limited | Smethwick | 2025 |
| UK Recycling Midlands Ltd | Dudley | 2026 |
| UK Remediation Ltd | Bristol | 2009 |
| UK Riverside Recyle Enterprise Limited | London | 2019 |
| UK Roberts Group Limited | Manchester | 2018 |
| UK Rubber Limited | Motherwell | 2014 |
| UK Rubbish Ltd | Sheerness | 2020 |
| UK Shredding Ltd | Horsham | 2025 |
| UK Skips Limited | Benfleet | 2015 |
| UK Steel Fixing & Group Building Ltd | London | 2023 |
| UK Sustainable Flooring Alliance Limited | Sale | 2007 |
| UK Tankers Ltd | Maidstone | 2025 |
| UK Textile Recycling Limited | Kettering | 2010 |
| UK Tipper Hire Ltd | Slough | 2015 |
| UK Toilet Hire Limited | Slough | 2024 |
| UK United Hankgo Water Purification Systems Co., Ltd | London | 2021 |
| UK Used Clothing Ltd | Swansea | 2024 |
| UK Utility Connections Limited | Wokingham | 2024 |