| D & K Engineering Solutions Limited | Manufacturing | 2016 |
| D & K Hedges Limited | Professional & scientific | 2012 |
| D & K International Limited | Manufacturing | 1995 |
| D & M Components Limited | Wholesale & retail | 2008 |
| D & M Heating Supplies Ltd | Construction | 2013 |
| D & R Flowers Ltd | Wholesale & retail | 2020 |
| D & W Property Investment Limited | Real estate | 2010 |
| D a Harriman & Sons Ltd | Transport & logistics | 2013 |
| D B Groundworks (GY) Limited | Construction | 2011 |
| D Bradley Properties Limited | Real estate | 2025 |
| D Brown Painting & Decorating Limited | Construction | 2002 |
| D C N Groundworks Limited | Construction | 2007 |
| D C N Properties Ltd | Real estate | 2019 |
| D Clixby E & I Technical Limited | Construction | 2016 |
| D Flynn Associates Limited | Professional & scientific | 2003 |
| D H Refractory Services Ltd | Other services | 2015 |
| D J C Plumbing & Heating Ltd | Construction | 2007 |
| D J Quality Engineering Limited | Professional & scientific | 2013 |
| D K Travel Limited | Administrative & support | 2011 |
| D M Stothard Limited | Construction | 2003 |
| D O’Keeffe Plumbing & Heating Limited | Construction | 2023 |
| D Robbins Fibre & Building Ltd | Information & communication | 2025 |
| D S Joinery & Building Services Ltd | Construction | 2021 |
| D Scott Surveying Limited | Professional & scientific | 2014 |
| D T Cladding Ltd | Construction | 2016 |
| D Tominey Ltd | Construction | 2023 |
| D W Self Storage Ltd | Real estate | 2021 |
| D&D Enterprises UK Ltd | Health & social care | 2016 |
| D&D Sampla Ltd | Wholesale & retail | 2025 |
| D&G Florist Strood Ltd | Wholesale & retail | 2022 |
| D&N Filleting Services Ltd | Wholesale & retail | 2024 |
| D&N Hendry Investments Limited | Real estate | 2025 |
| D&O Holdings Limited | Real estate | 2025 |
| D&S Site Services Limited | Construction | 2013 |
| D.A Plastering & Rendering Ltd | Construction | 2023 |
| D.A.Turrell Ltd | Construction | 2018 |
| D.C.I Electrical Services Ltd | Construction | 2020 |
| D.J. Bradley Limited | Construction | 2000 |
| D.L.T London Limited | Other services | 2013 |
| D.Mac Corrosion Services Limited | Construction | 2006 |
| D.R Smart Repairs Ltd | Wholesale & retail | 2023 |
| D.R.P. Bearings & Transmission Limited | Wholesale & retail | 1983 |
| Daas Media Ltd | Administrative & support | 2018 |
| DAB Graphics Limited | Professional & scientific | 2003 |
| DAB Property Agents Limited | Real estate | 2017 |
| DAB Retail Ltd | Hospitality | 2017 |
| Dach Cosmeceutics Limited | Manufacturing | 2017 |
| Dacris Trans Ltd | Transport & logistics | 2024 |
| Dadas Shop Ltd | Hospitality | 2024 |
| DAE Care Limited | Health & social care | 2011 |
| DAG Solution Ltd | Transport & logistics | 2018 |
| Dairy Lincs Limited | Wholesale & retail | 2022 |
| Daisy Homecare Lincolnshire Ltd | Health & social care | 2024 |
| Daisy's Deliveries Limited | Transport & logistics | 2017 |
| Daitch Electrical Services Limited | Construction | 2009 |
| Dajby Trans Ltd | Transport & logistics | 2016 |
| Dales View Holdings Ltd | Financial services | 2023 |
| Daley Discounts Ltd | Wholesale & retail | 2023 |
| Dalton Offshore Wind Ltd | Administrative & support | 2026 |
| DAM Trans Ltd | Wholesale & retail | 2023 |
| Damacreg Limited | Information & communication | 2002 |
| Damand Safety Services Limited | Construction | 2024 |
| Damlen Properties Limited | Real estate | 1992 |
| Damp Doctor Grimsby Limited | Construction | 2026 |
| DAN Halligan Limited | Manufacturing | 2026 |
| Dan&Raul Limited | Transport & logistics | 2025 |
| Dan's Automotive Services Limited | Wholesale & retail | 2017 |
| Dan-Cod (UK) Limited | Wholesale & retail | 2013 |
| Dance in Partners Limited | Arts & recreation | 2011 |
| Danco Trans Ltd | Transport & logistics | 2025 |
| Danes Engineering Limited | Information & communication | 2008 |
| Dani&Ionut Limited | Transport & logistics | 2025 |
| Daniel & Alexandra Ltd | Transport & logistics | 2026 |
| Daniel Garnett Financial Services Ltd | Other services | 2018 |
| Daniel Gilbert Grimsby Fish Ltd | Manufacturing | 2026 |
| Daniel Gulsher Ltd | Education | 2026 |
| Daniel Hunt Limited | Financial services | 2021 |
| Daniel James Automotive Ltd | Wholesale & retail | 2018 |
| Daniel Linfitt Limited | Real estate | 2023 |
| Daniel Quean & FAM Limited | Other services | 2022 |
| Daniella Draper Limited | Manufacturing | 2009 |
| Danm Trans Ltd | Transport & logistics | 2016 |
| Danmax Ltd | Transport & logistics | 2015 |
| Dannatt’S Ltd | Wholesale & retail | 2022 |
| Dannicks Trading Ltd | Construction | 2022 |
| Danny Kent Ltd | Construction | 2009 |
| Danny Webster Construction Limited | Construction | 2017 |
| Danny-Waul Engineering Limited | Manufacturing | 2015 |
| DAP Trans One Ltd | Transport & logistics | 2019 |
| Daral Limited | Professional & scientific | 1985 |
| Darby TPS LLP | | 2012 |
| Darius DRS Transport Logistic Ltd | Transport & logistics | 2026 |
| Darwood Properties Limited | Households | 2009 |
| DAS Trailers Limited | Wholesale & retail | 2020 |
| Dashtarget Limited | Transport & logistics | 2011 |
| Data Centre Safety Limited | Information & communication | 2022 |
| Datemakers Limited | Administrative & support | 2016 |
| Davdor Management Company Limited | Real estate | 2006 |
| Dave Atkin Property Developments Ltd | Construction | 2016 |
| Dave Communication Ltd | Information & communication | 2026 |