| DSD Waste Solutions Ltd | York | 2020 |
| DSG Outdoor Services Ltd | London | 2025 |
| DSH (Aberystwyth) Limited | Aberystwyth | 2025 |
| DSK Environmental Ltd | Sittingbourne | 2020 |
| DSK Plumbing and Property Services Ltd | Rugby | 2021 |
| DSL Group Ltd | Leeds | 2015 |
| DSM Recycling Ltd | Hampton | 2025 |
| DSM Waste Recycling Ltd | Cardiff | 2017 |
| DSP Aggregates Ltd | Ashford | 2012 |
| DSP Builders and Contractors Ltd | Ashford | 2012 |
| DSR Demolition Limited | Dronfield | 2001 |
| Dstn Services Ltd | Sevenoaks | 2022 |
| DSW Environmental Ltd | Truro | 2016 |
| DSW Skip Hire Ltd | Truro | 2025 |
| DSW Water Treatment and Engineering Limited | Lingfield | 2017 |
| DT Services (South East) Ltd. | Whitstable | 2012 |
| DTB Water Ltd | Doncaster | 2022 |
| Dtbwaste Limited | Bury | 2024 |
| DTK Box Van Limited | London | 2013 |
| DTM Drainage Solutions Limited | Wigan | 2014 |
| DTS Plant Ltd | Ivybridge | 2024 |
| DTS Trading Limited | Droitwich | 2012 |
| Duagh Holdings (Albert Embankment) Limited | London | 2025 |
| Dual Mixed Recycling Ltd | Sheffield | 2026 |
| Duckers Furniture Limited | Leeds | 1961 |
| Ducting Express Services Ltd | Leicester | 2011 |
| Ductworkpro Limited | Glasgow | 2015 |
| Dukan 1 Ltd | Southend-On-Sea | 2021 |
| Duke Drainage Solutions Ltd | Ormskirk | 2026 |
| Duke Utility Solutions Ltd | Liverpool | 2019 |
| Dukes Waste Management Ltd | Hornchurch | 2016 |
| Dulwich Water Treatment Services Limited | Bromley | 2011 |
| Dumfries Recycling Ltd | Carlisle | 2006 |
| Dump Daddy Recycling Ltd | Birmingham | 2024 |
| Dump IT (Scotland) Ltd | Hamilton | 2015 |
| Dump IT Scotland Recycling Ltd | Motherwell | 2024 |
| Dump Runners Ltd | Warlingham | 2026 |
| Dumpawaste Limited | Dinas Powys | 2013 |
| Dumpaway Skip Hire Limited | Great Yarmouth | 1994 |
| Dumpsmart Recycles Ltd | London | 2025 |
| Dumpster Ltd | Glasgow | 2019 |
| Dundee Decommissioning Limited | Inverkeithing | 2012 |
| Dundee Waste Management Limited | Musselburgh | 2020 |
| Dunley Water Company Limited | Whitchurch | 2005 |
| Dunmow Skips Ltd | Wickford | 2001 |
| Dunne Haulage & Plant Hire Limited | Witney | 2015 |
| Dunning Ltd | Harrow | 2015 |
| Dunning Waste Management Ltd | Harrow | 2015 |
| Dunns Waste Management Limited | Dudley | 2010 |
| Dunton Bassett Agri Organics Ltd | Cranbrook | 2026 |
| Dunton Environmental Limited | Walsall | 2006 |
| Dunton Technologies Limited | Walsall | 2014 |
| DUO Skip Hire (Aberystwyth) Limited | Aberystwyth | 2025 |
| DUO Skip Hire Limited | Aberystwyth | 2004 |
| Duracote Realisations Limited | Blackburn | 1965 |
| Duraflex Europe Limited | Belfast | 2024 |
| Durham Metals Ltd | Durham | 2022 |
| Durham Skip Hire Limited | Spennymoor | 2025 |
| Dust & Ventilation Services Ltd | Retford | 2007 |
| Dust Parts Limited | Loughborough | 2023 |
| Dustsentinel Environmental Systems Limited | Worthing | 2026 |
| DV Utilities Ltd | Preston | 2022 |
| DVB Tyre Recycling Limited | Letchworth Garden City | 2013 |
| Dvma Ltd | London | 2024 |
| DW ALL Trades Ltd | Newark | 2020 |
| DW Grab Hire Limited | Nottingham | 2018 |
| DW Waste Ltd | London | 2025 |
| DWD Waste Services Ltd | Llanelli | 2024 |
| Dwmh Limited | Exeter | 2001 |
| DWR Bronaber CYF | Carnforth | 2009 |
| DWR Cymru Cyfyngedig | Cardiff | 1989 |
| DWR Y Wyddfa Limited | Holyhead | 2003 |
| DWT Solutions (UK) Ltd | Leigh | 2014 |
| DWT Waste Management Limited | Slough | 2024 |
| DWW Asbestos Removal Services Limited | Billingham | 2019 |
| DXB Wholesale Ltd | Nottingham | 2021 |
| Dyfi Skips Limited | Machynlleth | 2023 |
| DYL Services Ltd | Newhaven | 2023 |
| Dynamic Drains Limited | Southampton | 2023 |
| Dynamic Ground Solutions Limited | Southend On Sea | 2011 |
| Dynamic Pool & Spas Limited | Pontyclun | 2020 |
| Dynamic Recycling Ltd | Barnsley | 2018 |
| Dynamic Tank Solutions Ltd | Dungannon | 2019 |
| Dynamic Water Treatments Ltd | Manchester | 2021 |
| Dyno-Pest Limited | London | 2017 |
| Dyno-Rod East London Ltd | Sunbury-On-Thames | 2022 |
| Dyno-Rod South Limited | Fareham | 2024 |
| DZ Drainage Solutions Ltd | London | 2024 |
| E & J Grab Hire Ltd | Romford | 2021 |
| E Energies Ltd | Chesterfield | 2021 |
| E G Traders Ltd | London | 2023 |
| E M R East Midlands Removals Ltd | Nottingham | 2018 |
| E S Global Inc Ltd | Nottingham | 2022 |
| E Scrap Waste Disposal Limited | Orpington | 2012 |
| E T M Construction & Recycling Holdings Limited | Bristol | 2011 |
| E Taylor Metal Recycling Limited | Leicester | 2015 |
| E Team Ltd | Swansea | 2011 |
| E Waste Management Ltd | Newport | 2025 |
| E World UK Ltd | London | 2006 |
| E&A Reclamation Limited | Ballymena | 2020 |