| 2 Locks Ltd | Construction | 2023 |
| 2 M Partnership Limited | Administrative & support | 2006 |
| 3 MAG Limited | Manufacturing | 2017 |
| A M Power Solutions Ltd | Manufacturing | 2006 |
| Abgardens Orpington Ltd | Administrative & support | 2025 |
| Ace Dog Walking London Limited | Administrative & support | 2019 |
| Addysg Seren Education Ltd | Administrative & support | 2016 |
| Adept GRP Cabinets Ltd | Other services | 2022 |
| Adrienalin Limited | Information & communication | 2026 |
| Agnitio Training & Consultancy Limited | Education | 2015 |
| Alignright Ltd | Other services | 2025 |
| ALO Construction Limited | Construction | 2018 |
| Altex (Wales) Limited | Wholesale & retail | 2002 |
| Altiora Capital Investments Ltd | Real estate | 2025 |
| AMS Commercials Limited | Manufacturing | 2023 |
| AMS Properties (Carmarthenshire) Ltd | Real estate | 2024 |
| Assured International Limited | Water & waste | 2023 |
| Assured Tech Conglomerate Ltd | Manufacturing | 2025 |
| Atex Pro Ltd | Professional & scientific | 2026 |
| ATI2UDE Ltd | Other services | 2022 |
| Barker Engineering Limited | Professional & scientific | 2007 |
| Barker Property Holdings Ltd | Real estate | 2022 |
| Bbjd Properties Limited | Hospitality | 2022 |
| Big Cloud IT Ltd | Information & communication | 2016 |
| Black Orchard Ltd | Agriculture & fishing | 2022 |
| Blwholmes Ltd | Real estate | 2023 |
| Bowls Kingdom Limited | Wholesale & retail | 2017 |
| BRH Holdings Limited | Financial services | 2023 |
| Brynhyfryd Wind Ltd | Wholesale & retail | 2020 |
| Burns Retail and Hospitality Ltd | Wholesale & retail | 2022 |
| Burry Port & Gwendraeth Valley Railway Company Limited | Transport & logistics | 2002 |
| Busy Bugs Day Nursery Limited | Education | 2013 |
| Bwyd CYF | Manufacturing | 2025 |
| Call Simon Ltd | Transport & logistics | 2010 |
| Camping Morgan 28 Ltd | Hospitality | 2025 |
| Capers Restaurant and Catering Ltd | Hospitality | 2013 |
| Castle Heating Cydweli Ltd | Construction | 2020 |
| CHC Renewables Ltd | Construction | 2024 |
| Cisp Multimedia Ltd | Education | 2021 |
| CMT Solutions Limited | Agriculture & fishing | 2003 |
| Cobbles Associates Ltd | Education | 2024 |
| Coed Adam Energy Ltd | Energy | 2014 |
| Coed Cariad C.I.C. | Education | 2020 |
| Commercial Vehicle Repairs (Llanelli) Ltd | Manufacturing | 2021 |
| Compass Training Facilities Limited | | 1990 |
| Compliance Track Ltd | Information & communication | 2025 |
| Consumer Insights LAB Ltd | Professional & scientific | 2020 |
| Corner Valley Limited | Information & communication | 2017 |
| CPT Morgan 28 Ltd | Hospitality | 2024 |
| Craig DDU Ltd | Construction | 2016 |
| Credu Consulting Ltd | Professional & scientific | 2020 |
| CWM Engineering Ltd | Manufacturing | 2011 |
| Cyndeyrn Properties Ltd | Real estate | 2026 |
| Cywion Bach CYF | Health & social care | 2017 |
| D & a Phillips Cleaning Solutions Limited | Wholesale & retail | 2023 |
| D L Farming Limited | Agriculture & fishing | 2006 |
| Daniels Estates Ltd | Real estate | 2024 |
| David Ponsford Services Ltd | Manufacturing | 2014 |
| Daviesamaeth CYF | Agriculture & fishing | 2026 |
| DBD 2489 Ltd | Construction | 2026 |
| DEC Smith Fitness T/A DS Fitness Ltd | Arts & recreation | 2024 |
| Derw Developments Ltd | Construction | 2021 |
| DG Developments (Wales) Limited | Construction | 2001 |
| Dinefwr Studios Ltd | Other services | 2020 |
| Dogzb (Properties) Ltd | Real estate | 2006 |
| Draintecwales Ltd | Construction | 2023 |
| Dunn Commercial and Plant Hire Services Limited | Wholesale & retail | 2008 |
| Dunn Mechanical Services Limited | Manufacturing | 2004 |
| Dzik Ltd | Transport & logistics | 2025 |
| E D Building Services Ltd | Construction | 2024 |
| E&M MOT and Servicing Limited | Wholesale & retail | 2016 |
| Easybus Carmarthenshire Ltd | Transport & logistics | 2024 |
| Elel Limited | Professional & scientific | 2025 |
| Elite Pro Paint Ltd | Manufacturing | 2026 |
| Elite Stands UK Limited | Manufacturing | 2023 |
| Emmark Group Limited | Real estate | 2021 |
| Engineering and Facilities Solutions Ltd | Professional & scientific | 2024 |
| Enzo's Investments Limited | Professional & scientific | 2017 |
| Enzo's Lettings Ltd | Real estate | 2014 |
| Enzo's Residential Lettings Ltd | Real estate | 2018 |
| Esgidiau Cics Shoes Ltd | Wholesale & retail | 2019 |
| Euro Date Limited | Wholesale & retail | 2021 |
| Everafterteam Ltd | Hospitality | 2025 |
| Excel Electrics Limited | Construction | 2011 |
| FDD Developments Limited | Construction | 2025 |
| Ffos LAS Leisure Ltd | Hospitality | 2022 |
| Finch Accountancy Limited | Professional & scientific | 2010 |
| Foodandonlinesale Ltd | Hospitality | 2021 |
| GAO Maintenance Ltd | Construction | 2024 |
| Gary Stuart Engieering Ltd | Construction | 2024 |
| GET Stuff Made Ltd | Wholesale & retail | 2014 |
| Gezer Food Ltd | Hospitality | 2022 |
| Gianninisupplies Ltd | Wholesale & retail | 2025 |
| Global Meat Suppliers Ltd | Manufacturing | 2025 |
| Glov ME Ltd | Wholesale & retail | 2023 |
| Glyn Abbey Gym Limited | Arts & recreation | 2014 |
| Gower Plant Hire Limited | Administrative & support | 1996 |
| Gravell's Limited | Wholesale & retail | 1960 |
| Gravells Services Limited | Administrative & support | 2004 |
| Griffiths Graphics Ltd | Professional & scientific | 2021 |