| MAD Hatter Agri Ltd | Financial services | 2022 |
| Maes:Ed CYF | Arts & recreation | 2026 |
| Mail Services West Limited | Information & communication | 2024 |
| Majic Times Ltd | Extraterritorial | 2023 |
| Marine Engines Direct Ltd | Wholesale & retail | 2024 |
| Matilda Smith-Williams Holdings Limited | Professional & scientific | 2024 |
| Megahard Ltd | Arts & recreation | 2021 |
| Melyn Ltd. | Financial services | 2010 |
| Micropharm Limited | Manufacturing | 1998 |
| Mindbodywise Ltd | Health & social care | 2022 |
| Mindworks Academy Community Interest Company | Education | 2019 |
| Mini Explorers Childcare Limited Partnership | | 2021 |
| Mister Meze Ltd | Hospitality | 2024 |
| MM Aesthetics- Emlyn Ltd | Other services | 2025 |
| Mobike Limited | Professional & scientific | 2009 |
| Moel-Y-Garn Commercial Limited | Professional & scientific | 2008 |
| Moelfryn Leisure Ltd | Hospitality | 2025 |
| Moes Indian Ltd | Hospitality | 2025 |
| Moes Spice Ltd | Hospitality | 2019 |
| Montague FOX Limited | Construction | 2011 |
| Morgan Valley Limited | Professional & scientific | 2003 |
| Morlogws Farm CYF | Agriculture & fishing | 2011 |
| MRS Jones Education LLP | | 2012 |
| Nan’S Cats Ltd | Other services | 2018 |
| Natures Nutrition Ltd | Professional & scientific | 2002 |
| Nepean Construction (2011) Limited | Construction | 2012 |
| Neptune Electrical Ltd | Construction | 2011 |
| Neuadd Gymunedol Eglwys Betws Ifan Community Church Hall CBC | Other services | 2026 |
| New Earth Energies Ltd | Education | 2019 |
| PEN Y Garn Limited | Energy | 2014 |
| Pendragon Estates Limited | Real estate | 2000 |
| Pengwern Farms Ltd | Agriculture & fishing | 2002 |
| Pensarnau Developments Limited | Construction | 2006 |
| Penygraig Ltd | Hospitality | 2021 |
| PHB Contracting Limited | Professional & scientific | 1999 |
| Pitsa DE Ltd | Manufacturing | 2025 |
| Pride Compliance Ltd | Public administration | 2019 |
| R & B Sons Solutions Ltd | Real estate | 2024 |
| REDKITE2 Limited | Wholesale & retail | 2024 |
| Ripe Hosts Ltd | Information & communication | 2020 |
| Rosehill Property Ventures Limited | Real estate | 2023 |
| Royal Solutions Ltd | Administrative & support | 2017 |
| RTS Survey Limited | Professional & scientific | 2018 |
| S I Thomas Limited | Construction | 2024 |
| Salmon Leap Gifts Ltd | Wholesale & retail | 2025 |
| SC Optical Holding Ltd | Professional & scientific | 2024 |
| Seaview Builders Limited | Construction | 2003 |
| Shaish Naga Limited | Manufacturing | 2019 |
| Side by Side Cymru / Wales Ltd | Health & social care | 2019 |
| Solutions HQ Ltd | Manufacturing | 2015 |
| Spiteri Retraining Limited | Agriculture & fishing | 2022 |
| Stanfield Farms (Wales) Limited | Agriculture & fishing | 2002 |
| Tanglwst Fabrications Limited | Construction | 2009 |
| Teifi Developments Ltd. | Construction | 2013 |
| Teifi Tots Limited | Health & social care | 2013 |
| Teifi Valley Developments Ltd. | Construction | 2021 |
| Telemat CYF | Professional & scientific | 2010 |
| THE Bay Furniture Company Ltd | Wholesale & retail | 2020 |
| THE Cattle VET Ltd | Professional & scientific | 2020 |
| THE Emlyn Plough Ltd | Hospitality | 2026 |
| THE Outsourcing Advisory Service Limited | Professional & scientific | 2015 |
| THE Shore Homes Group Limited | Real estate | 2024 |
| THE Software Crew Limited | Professional & scientific | 2014 |
| THE VET Group Ltd | Financial services | 2024 |
| Thrive Holistic Education C.I.C. | Education | 2025 |
| Tivy Hall Limited | Wholesale & retail | 2004 |
| Tivy Security Limited | Administrative & support | 2012 |
| Trading Post Magazines Ltd | Information & communication | 2015 |
| Triple P Consulting Limited | Administrative & support | 2012 |
| UK Event Support Limited | Health & social care | 2018 |
| Ukes Ltd | Health & social care | 2025 |
| Vape Innovation Products Ltd | Wholesale & retail | 2013 |
| Vennwood Limited | Information & communication | 1989 |
| Venture Offshore Ltd | Information & communication | 2006 |
| Weathertight Structures Limited | Manufacturing | 1991 |
| West Coast Finance Ltd | Financial services | 2014 |
| West Side Homes Ltd | Real estate | 2024 |
| West Wales GAS Ltd | Wholesale & retail | 2024 |
| West Wales Renewables Ltd | Construction | 2026 |
| West Wales Trails Limited | Construction | 2013 |
| WRM Project Management Limited | Professional & scientific | 2007 |
| X3 Consultants Limited | Information & communication | 2014 |