| DGW Engineering Services Limited | Professional & scientific | 2012 |
| Diad-Trans Ltd | Transport & logistics | 2025 |
| Dial - a - Tile Ltd. | Construction | 2002 |
| Diamond Ashes Ltd | Manufacturing | 2025 |
| Diamond Mechanical Engineering Ltd | Construction | 2015 |
| Diamond Nails Beauty Spa Ltd | Other services | 2024 |
| Diamond Property Letting Limited | Real estate | 2023 |
| Dianahshop Limited | Transport & logistics | 2019 |
| Dieter Nelson Planning Consultancy Ltd | Other services | 2007 |
| Digi-Saint Ltd | Professional & scientific | 2026 |
| Digita Group Ltd | Information & communication | 2018 |
| Digital Blast Limited | Wholesale & retail | 1999 |
| Digital Canvas Studio Limited | Information & communication | 2026 |
| Digital Patronage Limited | Information & communication | 2025 |
| Digital Skills HQ Ltd | Professional & scientific | 2015 |
| Diligence Contracting Limited | Administrative & support | 2015 |
| Dillon Turbines Limited | Construction | 2023 |
| Dimitrios Locums Limited | Health & social care | 2013 |
| Dinca Speed Ltd | Hospitality | 2025 |
| Dindindies Ltd | Manufacturing | 2018 |
| Dinil Limited | Information & communication | 2017 |
| Dino Dawgs Ltd | Hospitality | 2025 |
| Dinocore Ltd | Water & waste | 2026 |
| Direct Couriers GY Limited | Transport & logistics | 2025 |
| Dirty Docks Ltd | Arts & recreation | 2020 |
| Disability Active Limited | Arts & recreation | 2008 |
| Discount Mobility Plus Limited | Wholesale & retail | 2005 |
| Distinctive Watches Limited | Wholesale & retail | 2018 |
| Distinguished (UK) Limited | Administrative & support | 2012 |
| Dita App Ltd | Information & communication | 2025 |
| Dive Bar BD1 Ltd | Hospitality | 2023 |
| Divine Ideas Merchants Ltd | Wholesale & retail | 2023 |
| Djb's Engineering Consultants Limited | Professional & scientific | 2022 |
| DJC Aviation Limited | Professional & scientific | 2025 |
| DJP Wind Ltd | Professional & scientific | 2026 |
| Djpstarkey Ltd | Construction | 2026 |
| DJR Fabrication Limited | Manufacturing | 2021 |
| DJW Ropes Ltd | Construction | 2023 |
| DJW Technical Solutions Ltd | Construction | 2014 |
| Dkirk Inspections Ltd | Professional & scientific | 2025 |
| DKY Logistics Ltd | Transport & logistics | 2017 |
| DL Brookes Properties Ltd | Real estate | 2025 |
| DL Services Lincs Ltd | Construction | 2024 |
| DLC Pubs Ltd | Hospitality | 2026 |
| DLC Trans Ltd | Transport & logistics | 2019 |
| DLG Ropewalk Limited | Real estate | 2011 |
| DLS Tech Solutions Limited | Other services | 2022 |
| DLT Recruitment Ltd | Administrative & support | 2023 |
| DM Cladding Services Limited | Construction | 2005 |
| DM Courier Van Limited | Transport & logistics | 2025 |
| DMB Wind Services Limited | Other services | 2026 |
| DMC Architecture Limited | Professional & scientific | 2005 |
| DMH Business Solutions Limited | Wholesale & retail | 2014 |
| DMH Joinery Ltd | Construction | 2023 |
| DMS Technical Ltd | Professional & scientific | 2018 |
| DNA Builders Ltd | Construction | 2010 |
| DNA Fish Supplies Limited | Wholesale & retail | 2013 |
| DNA Products & Services Ltd | Manufacturing | 2019 |
| DNA Products Limited | Construction | 2023 |
| Dnpb Ltd | Professional & scientific | 2015 |
| Docks Beers Limited | Manufacturing | 2013 |
| Dockside TDA Ltd | Professional & scientific | 2025 |
| Doctor YES Limited | Health & social care | 2011 |
| Docu-Link Limited | Transport & logistics | 2001 |
| Dog Store Ltd. | Wholesale & retail | 2017 |
| Dogg 'O' the Docks Ltd | Manufacturing | 2026 |
| Doggys Delight Grimsby Limited | Wholesale & retail | 2024 |
| Dogman Holdings Limited | Transport & logistics | 2025 |
| Doing R BIT Limited | Manufacturing | 2019 |
| Dolans Garage Limited | Wholesale & retail | 2003 |
| Doll Divine Aesthetics Ltd | Other services | 2022 |
| Domestic Plastering Ltd | Construction | 2021 |
| Domestic Plumbing Solutions Ltd | Construction | 2020 |
| Domfree Limited | Health & social care | 2014 |
| Dominantmono Ventures Ltd | Real estate | 2024 |
| Doming LAB Limited | Professional & scientific | 2022 |
| DON the Fish Limited | Wholesale & retail | 2002 |
| Donna Mcpherson Limited | Hospitality | 2016 |
| Donna Wilkinson Mortgage Adviser Ltd | Financial services | 2022 |
| Donnelly Clothing Ltd | Wholesale & retail | 2025 |
| Doopydoos Limited | Other services | 2007 |
| Door to Destination Ltd | Transport & logistics | 2026 |
| Doran Transport Ltd | Wholesale & retail | 2019 |
| Doreen Medicals Limited | Administrative & support | 2015 |
| Dough Bros Cleethorpes Ltd | Hospitality | 2024 |
| Dougies Green Ltd | Real estate | 2020 |
| Dovedale Hotel & Restaurant Limited | Hospitality | 2008 |
| Downie Design Solutions Limited | Professional & scientific | 2014 |
| Downstream OIL Industry Services Limited | Administrative & support | 2015 |
| Dowsland Electrical Limited | Other services | 2013 |
| DP Renewables Ltd | Construction | 2018 |
| DP Roberts Ltd | Construction | 2025 |
| DPC Electrical Services Ltd | Construction | 2014 |
| DPE Electrical Services Ltd | Construction | 2020 |
| Dphb Investments Limited | Financial services | 2025 |
| DPM Welding & Fabrications Limited | Manufacturing | 2014 |
| DPR Logistics Ltd | Transport & logistics | 2018 |
| DR Dawson Health Ltd | Health & social care | 2024 |
| DR S ROY Limited | Health & social care | 2020 |
| DR Sally's Botanicals T/A Chapel Yard Organics Ltd | Wholesale & retail | 2022 |