| Manor Abbey Foods Ltd | Wholesale & retail | 2008 |
| Match White GLO Ltd | Health & social care | 2025 |
| Materials Handling Consultants Ltd | Professional & scientific | 2013 |
| Maximus Global Limited | Health & social care | 2022 |
| Miss Brow Limited | Wholesale & retail | 2018 |
| Moduron Bay View Motors Ltd. | Real estate | 2021 |
| Morgan & Davies Ltd | Real estate | 2018 |
| MOZ Plastics Ltd | Wholesale & retail | 2024 |
| MÔR Fresh CYF. | Agriculture & fishing | 2015 |
| Naturesbase Ltd | Hospitality | 2014 |
| Net-Teach Limited | Education | 2011 |
| Niche Technical Consulting Ltd | Hospitality | 2020 |
| Nicole Duncan Productions Limited | Information & communication | 2024 |
| Old REC Cottages Limited | Real estate | 2003 |
| One Cat Farm Limited | Construction | 2007 |
| Oriel Jones Limited | Wholesale & retail | 2014 |
| Outback Outfitters Ltd | Wholesale & retail | 2023 |
| P H & M V Jones (Dyfed) Limited | Administrative & support | 1978 |
| PAM Locum Ltd | Wholesale & retail | 2018 |
| Paned Ltd | Wholesale & retail | 2017 |
| Pantycelyn Country Escapes Ltd | Hospitality | 2021 |
| Patrick GEE Associates Ltd | Professional & scientific | 2016 |
| PB Glazing Wales Ltd | Construction | 2024 |
| Peaceful Pools Wellbeing Farm CIC | Health & social care | 2025 |
| Pedr Financial Planning CYF | Financial services | 2009 |
| Pennal View Residential Care Home Ltd | Health & social care | 2015 |
| Pentrefelin Farm Ltd | Agriculture & fishing | 2013 |
| PJE Audit Services Ltd | Professional & scientific | 2017 |
| Plas Maldwyn Management Company Limited | Construction | 2006 |
| Podiau Blaenplwyf CYF | Hospitality | 2024 |
| Portapool Swim Hire Ltd | Administrative & support | 2019 |
| Prestige Gems Limited | Manufacturing | 2003 |
| PTW Entertainments and Sport Ltd | Arts & recreation | 2021 |
| R. CE. T. Ltd | Water & waste | 2011 |
| RAM Developments (Cwmann) Ltd | Construction | 2017 |
| Randell Roofing Ltd | Construction | 2020 |
| Rare Hospitality Limited | Hospitality | 2008 |
| Recycle Wales Ltd. | Professional & scientific | 2002 |
| Red Kite Geomatics Limited | Professional & scientific | 2008 |
| Red Kite Publishing Ltd | Manufacturing | 2014 |
| Retreat Yurts Ltd | Administrative & support | 2015 |
| Retrotecchie Ltd | Construction | 2013 |
| Rhiwbren Landscapes & Construction Ltd | Construction | 2018 |
| Rhys Douglas Agricultural Contractor Ltd | Agriculture & fishing | 2026 |
| Richard Crompton Limited | Professional & scientific | 2016 |
| RJK Group Ltd | Hospitality | 2022 |
| ROB Marsh Woodland Services Limited | Agriculture & fishing | 2008 |
| Robert's Garden Centre Limited | Wholesale & retail | 2003 |
| Rocksteady GEO Ltd | Professional & scientific | 2019 |
| Roger Alison Limited | Professional & scientific | 2008 |
| RSR Factors and Fabrication Ltd. | Manufacturing | 2017 |
| RTH Technology Ltd | Information & communication | 2018 |
| Saint Paul's (Aberystwyth) Limited | Real estate | 1997 |
| Saya & Sons Property Ltd | Households | 2016 |
| Scle Holdings Limited | Professional & scientific | 2025 |
| SER Aeron Stars Youth Theatre CIC | Arts & recreation | 2022 |
| Seren Day Nursery Limited | Education | 2015 |
| Shapla Tandoori Lampeter Limited | Hospitality | 2019 |
| Silver Hoard Studios Ltd | Information & communication | 2025 |
| Simon Hall Meats Ltd | Wholesale & retail | 2011 |
| Sistofa Developments Ltd | Households | 2020 |
| Sistofa Ltd | Construction | 2020 |
| Smiddereens Limited | Administrative & support | 2017 |
| Snax and Sons Ltd | Hospitality | 2026 |
| Social James Ltd | Information & communication | 2024 |
| Spitz'N'Sparx Ltd | Construction | 2006 |
| SR Heating Services Ltd | Construction | 2025 |
| Stable & Barn Events Ltd | Administrative & support | 2018 |
| Stage Goat Theatre Company CIC | Arts & recreation | 2019 |
| Steffan Ltd | Real estate | 2021 |
| Sterling Project & Cost Management Ltd | Professional & scientific | 2024 |
| Stiwdio Sistofa Ltd | Professional & scientific | 2020 |
| Storm Organics Ltd | Agriculture & fishing | 2007 |
| TAI Brodyr T CYF | Real estate | 2026 |
| TAN a Chwrw CYF | Arts & recreation | 2022 |
| Tarw Teifi CYF | Agriculture & fishing | 2025 |
| Taste & Travel Ltd | Administrative & support | 2026 |
| Tears of Love Ltd | Agriculture & fishing | 2023 |
| Teifi Taxis Ltd | Transport & logistics | 2023 |
| Teifi Valley Water Wells Limited | Construction | 2013 |
| Teifi Wells Ltd | Water & waste | 2021 |
| Teify Forge Limited | Manufacturing | 2003 |
| Thauma Collective Limited | Professional & scientific | 2025 |
| THE Beauty Co. Group Limited | Other services | 2020 |
| THE BID Team Limited | Professional & scientific | 2005 |
| THE Fjord Horse National Stud Book Association of Great Britain Limited | Other services | 2000 |
| THE Griffiths Heritage Consultancy Limited | Professional & scientific | 2015 |
| THE Lipizzaner National Stud Book Association of Great Britain Ltd | Other services | 2002 |
| THE London Beauty Company Limited | Wholesale & retail | 2021 |
| THE Luxe PUP Limited | Agriculture & fishing | 2025 |
| THE Rock Show Limited | Arts & recreation | 2009 |
| THE Special Legendary Company Limited | Professional & scientific | 2025 |
| Thomas LOG Burners Ltd | Construction | 2024 |
| Tidy Tea Ltd | Wholesale & retail | 2020 |
| Tipi Toilets CYF | Other services | 2026 |
| Tjec Limited | Construction | 2019 |
| Track Sportswear Ltd | Wholesale & retail | 2018 |
| Trailertechuk Ltd | Manufacturing | 2025 |
| Treganna CYF | Financial services | 2022 |
| Tregaron Trotting Club Limited | Administrative & support | 2003 |