| Dilwyn Playgroup | Education | 2009 |
| Dimax Digital Ltd | Information & communication | 2018 |
| Dinedor Cross Garage Ltd | Wholesale & retail | 2011 |
| Dinia Property Ltd | Real estate | 2025 |
| Dinmore Leisure Ltd | Wholesale & retail | 2010 |
| Direct Leadership Ltd | Professional & scientific | 2025 |
| Dirt Craft Ltd | Arts & recreation | 2021 |
| Dirty Feet Dance CIC | Arts & recreation | 2017 |
| Discotek Events Limited | Arts & recreation | 2018 |
| DISCOUNTED247 Ltd | Wholesale & retail | 2025 |
| Dishbyart Ltd | Hospitality | 2024 |
| Districaf UK Ltd | Transport & logistics | 2019 |
| Dithiete Limited | Professional & scientific | 2020 |
| Ditsy's Little Stars Limited | Health & social care | 2018 |
| Diva Media Ltd | Information & communication | 2019 |
| Diva Weddings and Events Ltd | Administrative & support | 2010 |
| Diverse Advice Limited | Professional & scientific | 2003 |
| Divox Limited | Information & communication | 1981 |
| Dizzy Dudes Ltd | Hospitality | 2024 |
| DJP Construction (Hereford) Limited | Construction | 2017 |
| DJP Investments (Hereford) Limited | Real estate | 2021 |
| DLE Property Ltd | Administrative & support | 2017 |
| DLP Consultancy Services Ltd | Professional & scientific | 2023 |
| DLP Property Holdings Ltd | Real estate | 2021 |
| DM Gwynne Transport Limited | Transport & logistics | 2007 |
| DM Lettings Ltd | Real estate | 2020 |
| Dmhc Limited | Real estate | 2024 |
| DO and Partner Limited | Other services | 2024 |
| DOC Spartan UK Ltd | Wholesale & retail | 2021 |
| Dockyard Developments Limited | Real estate | 2012 |
| Dockyard Leasehold Limited | Real estate | 2023 |
| Dog House Property Ltd | Real estate | 2019 |
| Dollis Investments Ltd | Real estate | 2020 |
| DOM Auto Repair & Recovery Ltd | Wholesale & retail | 2021 |
| Domestic Repair Centre Limited | Manufacturing | 2006 |
| Domestic Sprinklers South Wales Limited | Construction | 2013 |
| Dominic Edmunds Ltd | Construction | 2004 |
| Donnelly Consultancy Ltd | Professional & scientific | 2024 |
| Dontec Ltd | Manufacturing | 2025 |
| Dontwakethefish Limited | Hospitality | 2015 |
| Doomsday Clothing Co Limited | Manufacturing | 2023 |
| Door-Master (Hereford) Ltd | Construction | 2003 |
| Dopamine Trading Ltd | Wholesale & retail | 2024 |
| Dore Community Transport | Transport & logistics | 2002 |
| Dore View Management Company | Information & communication | 2003 |
| Doris Knows CIC | Other services | 2024 |
| Dorstone Court Farms Limited | Agriculture & fishing | 2024 |
| Double at Housing Ltd | Real estate | 2019 |
| Double H Ventures Ltd | Hospitality | 2026 |
| Doubletake Design Ltd | Professional & scientific | 2006 |
| Dough & Deer Ltd | Other services | 2015 |
| Doughty Brothers Limited | Wholesale & retail | 1951 |
| Downland Deer Reserves Limited | Agriculture & fishing | 2015 |
| Downshill Developments Ltd | Real estate | 2020 |
| Doyles Bar Ltd | Hospitality | 2024 |
| Doyles Bar Solihull Ltd | Hospitality | 2026 |
| Doyles Sports Bar Ltd | Hospitality | 2024 |
| DP Engineered Solutions Ltd | Professional & scientific | 2025 |
| DQ and K Limited | Hospitality | 2023 |
| DR a Hussain Ltd | Health & social care | 2025 |
| DR Arun Surgical Services Limited | Health & social care | 2019 |
| DR Beth Healey Ltd | Health & social care | 2023 |
| DR Fosters PUB Co Ltd | Hospitality | 2024 |
| DR Rebecca Aesthetics Ltd | Other services | 2025 |
| Dragan Art Ltd | Education | 2010 |
| Dragonfly Strategic Risk Adviser Ltd | Professional & scientific | 2020 |
| Draig Joinery Ltd | Construction | 2008 |
| Drawn and Jointed Ltd | Real estate | 2020 |
| Drayton Bassett Developments Limited | Real estate | 2026 |
| Drazah - Solutions Limited | Administrative & support | 2003 |
| Dread Optics Ltd | Professional & scientific | 2024 |
| Dream Country Ltd | Real estate | 2022 |
| Dream Dropper Ltd | Arts & recreation | 2025 |
| Dreamstar Enterprises Limited | Information & communication | 2016 |
| Dronfield Developments Ltd | Real estate | 2023 |
| Dronfield Holdings Ltd | Real estate | 2017 |
| Dros Limited | Health & social care | 2008 |
| Dros Properties Ltd | Real estate | 2021 |
| Drover Group Ltd | Financial services | 2026 |
| Drover Holidays Ltd | Administrative & support | 2026 |
| Dryden Estates Ltd | Real estate | 2018 |
| Dryden Mackey Ltd | Real estate | 2018 |
| Dryden Mackey Properties Ltd | Real estate | 2018 |
| DSR Financial Services Ltd | Financial services | 2018 |
| DSR Voodoo Tech Ltd | Arts & recreation | 2022 |
| Dstms Ltd | Hospitality | 2010 |
| Dt's Pizza Ltd | Hospitality | 2026 |
| Dtbc Ltd | Professional & scientific | 2005 |
| Dtfw Ltd | Financial services | 2017 |
| Dualfancy Limited | | 1986 |
| Dugan's Patisserie Ltd | Manufacturing | 2017 |
| Dugan-Maassen Ltd | Real estate | 2025 |
| Dunelm Holdings Limited | Financial services | 2025 |
| Dunelm Property Limited | Real estate | 2025 |
| Dunswater Farms Limited | Wholesale & retail | 2018 |
| Durlow Limited | Professional & scientific | 2006 |
| Dustco International Limited | Extraterritorial | 2019 |
| DWD Associates Ltd | Real estate | 2015 |
| DWI Property Group Ltd | Real estate | 2023 |
| DWS Group Limited | Administrative & support | 2017 |