| D@Tglobal. Ltd. | Manufacturing | 2017 |
| Dale Roads Group Limited | Financial services | 2015 |
| DAM Property Solutions Ltd | Real estate | 2025 |
| Datewiz Ltd | Professional & scientific | 2023 |
| Dave Hailey Consulting Ltd | Professional & scientific | 2018 |
| Dcram Limited | Construction | 2024 |
| Direct Construction Pembrokeshire Limited | Construction | 2021 |
| DR Construction (Pembrokeshire) Limited | Construction | 2014 |
| Dragon PPE Ltd | Wholesale & retail | 2022 |
| Dragon Retail (Payroll Services) Limited | Extraterritorial | 2009 |
| Dunscore Ltd | Professional & scientific | 2020 |
| DWR a MÔR Engineering Ltd | Professional & scientific | 2025 |
| Dyfed Cleaning Group Ltd. | Administrative & support | 2023 |
| Dyfed GAS Limited | Energy | 2022 |
| Dyfed Timber Products Limited | Manufacturing | 2025 |
| E K Property Management & Co Limited | Real estate | 2022 |
| Easter Ventures Limited | Real estate | 2019 |
| Eastgate Laboratory Ltd | Manufacturing | 2019 |
| Easy Garden Group Ltd | Wholesale & retail | 2013 |
| Eco Charge West Ltd | Construction | 2024 |
| Electra Nest Bourges View Ltd | Construction | 2025 |
| Electra Nest Ltd | Financial services | 2024 |
| Electra Nest Machynys Ltd | Construction | 2024 |
| Electra Nest Pembroke Ltd | Construction | 2024 |
| Electra Nest Pentre Awel Ltd | Construction | 2025 |
| Electra Nest Pyle Ltd | Construction | 2024 |
| Electra Nest Swansea Ltd | Construction | 2024 |
| Etech Industrial Materials Limited | Manufacturing | 2017 |
| Events Pembrokeshire Limited | Other services | 2023 |
| Family Mediation Matters Ltd | Professional & scientific | 2020 |
| Fantasy East Ltd | Wholesale & retail | 2024 |
| First and Last Inn Limited | Hospitality | 2003 |
| Focus Pointer Ltd | Information & communication | 2025 |
| Forest Care Homes Limited | Health & social care | 2002 |
| Fortiq Ltd | Professional & scientific | 2024 |
| Freshwest Holdings Ltd | Financial services | 2023 |
| Friendly Dragon Ltd | Information & communication | 2023 |
| GB678 Limited | Hospitality | 2025 |
| Gemline Boutique Ltd | Wholesale & retail | 2025 |
| Genpower Direct Limited | Manufacturing | 2007 |
| Genpower Industrial Tools Limited | Manufacturing | 2017 |
| Genpower International Ltd | Manufacturing | 2017 |
| Genpower Ltd | Wholesale & retail | 2006 |
| GG Events Ltd | Manufacturing | 2018 |
| Gorslas Service Station Limited | Wholesale & retail | 2015 |
| Grainger Endeavours Ltd | Wholesale & retail | 2024 |
| Grainger Operations Ltd | Wholesale & retail | 2024 |
| Greenhill Catering Limited | Hospitality | 2009 |
| Grosvenor Eastern Holdings Limited | Real estate | 2018 |
| Grsk Estates Ltd | Real estate | 2025 |
| GS Tools (Holdings) Ltd | Financial services | 2017 |
| GS Tried and Tested Tools Limited | Manufacturing | 2017 |
| GULER35 Ltd | Administrative & support | 2026 |
| Gwylanuk Ltd | Information & communication | 2016 |
| Hall Frances and Bowes Finance Limited | Financial services | 2025 |
| Hammer Brothers Ltd | Manufacturing | 2019 |
| Hansford Management Services Ltd | Professional & scientific | 2025 |
| Hanyi Limited | Real estate | 2021 |
| Harvey Bowes Financial Services Limited | Financial services | 2015 |
| Harvey Bowes Group Limited | Financial services | 2023 |
| Harvey Bowes Limited | Real estate | 2006 |
| Hasty Bite Ltd | Hospitality | 2020 |
| Hause of Luxe Limited | Other services | 2026 |
| Haven Foods Limited | Manufacturing | 2002 |
| Haven Self Storage Ltd | Transport & logistics | 2008 |
| HAY Construct Ltd | Construction | 2021 |
| Haydn C Jones Limited | Construction | 2009 |
| Hfjs Holdings Ltd | Financial services | 2025 |
| Horizon Response Ltd | Health & social care | 2023 |
| Hugh Williams Roofing Building & Carpentry Ltd | Construction | 2026 |
| Hundleton West END Developments Limited | Construction | 2024 |
| Idointernetofthings Ltd | Wholesale & retail | 2024 |
| Idrys Legal Ltd | Professional & scientific | 2014 |
| Industrial Engraving Services Ltd | Manufacturing | 2006 |
| Innovative Group Pembs Ltd | Financial services | 2024 |
| Innovative Heating Services Limited | Construction | 2023 |
| Insite Technical Services Limited | Professional & scientific | 2014 |
| Interclamp Europe Ltd | Wholesale & retail | 2011 |
| Invictus Inexorable Investments Ltd | Hospitality | 2025 |
| Invictus Properties United Ltd | Financial services | 2026 |
| Itinerant Professionals Limited | Professional & scientific | 2017 |
| J & J Truckin Limited | Transport & logistics | 2014 |
| J J Service Station Limited | Administrative & support | 2006 |
| J O P Limited | Construction | 1973 |
| J.M.R Taylor & Co Limited | Hospitality | 2024 |
| Jaytree Engineering Ltd | Professional & scientific | 2019 |
| JCT EHS Limited | Professional & scientific | 2012 |
| JJF Safety Limited | Other services | 2017 |
| Jj’S Bar Ltd | Hospitality | 2025 |
| JLI Trading Limited | Wholesale & retail | 2012 |
| Jones Mobile Welding & Fabrication Limited | Construction | 2024 |
| Juniper Enterprises 2 Ltd | Wholesale & retail | 2016 |
| Juniper Enterprises Ltd | Wholesale & retail | 2015 |
| Just Real Property Limited | Real estate | 2024 |
| Kardesler Food Ltd | Hospitality | 2018 |
| Karl Cookson Painting and Civil Contractors Ltd | Construction | 2020 |
| KC Aesthetics & Head Spa Ltd | Other services | 2025 |
| KEW Consulting Partnership Limited | Information & communication | 2017 |
| Kingswood Engineering Limited | Manufacturing | 1997 |
| KJS Bar Ltd | Hospitality | 2021 |