| A & D Murco Friendly Ltd | Wholesale & retail | 2023 |
| A & E Nichols Limited | Wholesale & retail | 2000 |
| A H J Owen Limited | Construction | 2014 |
| A L James Engineering Ltd | Professional & scientific | 2018 |
| A.J. Sloan Construction Limited | Construction | 2022 |
| Aaamanagement Ltd | Financial services | 2003 |
| Abel Property Rentals Ltd | Real estate | 2023 |
| Abergwaun Bistro and Rooms Ltd | Hospitality | 2026 |
| Abersign Ltd | Professional & scientific | 2018 |
| Adeiladwyr GRD CYF | Construction | 2023 |
| Admor Agency Ltd | Professional & scientific | 2023 |
| Adoption Finder Intermediary Service Limited | Health & social care | 2020 |
| Adrian Chiriac Ltd | Health & social care | 2015 |
| Andrew Lloyd Ltd | Transport & logistics | 2016 |
| Apollo Cybersecurity Ltd | Administrative & support | 2023 |
| Arbitrage Corporate & Finance Brokers LLP | | 2026 |
| Asbestos Awareness & Support Cymru Limited | Health & social care | 2012 |
| Atwater Limited | Professional & scientific | 2011 |
| Autumn Leaves Limited | Administrative & support | 2008 |
| Bar Five Fishguard Ltd | Hospitality | 2025 |
| Barfive Limited | Extraterritorial | 2002 |
| Baron, Mcgarvey Limited | Hospitality | 1990 |
| Bay Salon Ltd | Other services | 2022 |
| Behind the Lens Media Limited | Information & communication | 2016 |
| Bella Roma Berettoni Ltd | Hospitality | 2024 |
| Bettabuys (Fishguard) Limited | Wholesale & retail | 2017 |
| Blaengosen Ltd | Information & communication | 2018 |
| Blue Collar Industries Ltd | Wholesale & retail | 2024 |
| Bluestone Builders Ltd | Construction | 2007 |
| Bluwave Accountancy & Co Ltd | Professional & scientific | 2024 |
| Breen Capital Limited | Real estate | 2014 |
| Broadford Technical Services Ltd | Professional & scientific | 2019 |
| Broadmoor Farm Limited | Agriculture & fishing | 2010 |
| Buckland Properties Limited | Construction | 2015 |
| Building & Land Services Limited | Construction | 2016 |
| Bulletin the Head Films Limited | Information & communication | 2014 |
| Buttles Enterprises Limited | Hospitality | 2016 |
| Calendar Manager Limited | Information & communication | 2013 |
| Cape Maritime Consultancy Ltd | Professional & scientific | 2024 |
| Carys Eleri Ltd | Health & social care | 2026 |
| Castle Hot Tubs Limited | Administrative & support | 2003 |
| Cegin 24 CYF | Hospitality | 2024 |
| Celf Collective C.I.C. | Arts & recreation | 2026 |
| Celtic Storage Limited | Administrative & support | 2016 |
| Ceriandpete Limited | Wholesale & retail | 2001 |
| Chandos Consulting Limited | Administrative & support | 2009 |
| Chosen Wine Limited | Wholesale & retail | 2018 |
| CK Roofing & Building Limited | Construction | 2016 |
| Claremont Financial Services Limited | Financial services | 2019 |
| Cleddau View Developments Limited | Construction | 2018 |
| Cloverton Properties (Cilgerran) Limited | Construction | 1984 |
| Cove Corner Limited | Hospitality | 2026 |
| Creampots Property Company Limited | Real estate | 2009 |
| Cwrdd CYF | Professional & scientific | 2021 |
| Dairypower UK Ltd | Manufacturing | 2019 |
| Daniel Thomas (1881) Limited | Professional & scientific | 2021 |
| Datrysiad CYF | Professional & scientific | 2015 |
| Davies Energy Ltd | Energy | 2015 |
| Davies Penralltddu Limited | Agriculture & fishing | 2015 |
| Derwydd Garage Limited | Wholesale & retail | 1992 |
| Dinas Cross Service Station Ltd | Wholesale & retail | 2011 |
| Dolphin Coast Concept Limited | Extraterritorial | 2007 |
| Doublecheq Health Limited | Wholesale & retail | 2024 |
| Doublehelex Limited | Professional & scientific | 2021 |
| Dros-Dro Cyfyngedig | Professional & scientific | 2011 |
| DT1881 CYF | Hospitality | 2014 |
| Dwrbach Holiday Accommodation Limited | Real estate | 2021 |
| Dwrbach Trading Limited | Wholesale & retail | 2003 |
| Dyfal Donc CYF | Construction | 2012 |
| Dyfal Donc Eiddo CYF | Real estate | 2021 |
| E & S Hughes & Sons Limited | Construction | 2019 |
| E-Jewel Limited | Wholesale & retail | 1997 |
| Eaga Developments Limited | Construction | 2005 |
| Earthtech Ltd | Professional & scientific | 2015 |
| Ecodex Ltd | Professional & scientific | 2025 |
| Edom Project Management Limited | Professional & scientific | 2012 |
| Elephant in Red Limited | Arts & recreation | 2019 |
| Elite Wealth Management Solutions Ltd | Professional & scientific | 2013 |
| Elizabeth Callard Consultancy Limited | Administrative & support | 2015 |
| Eurodragon Ltd | Wholesale & retail | 2024 |
| Evans Agricultural Contracting Limited | Agriculture & fishing | 2015 |
| Falcon Boats Limited | Arts & recreation | 2016 |
| Feel Sound Ltd | Other services | 2025 |
| Ffwrn Ltd | Hospitality | 2022 |
| Fishguard & Goodwick Building Supplies Ltd | Wholesale & retail | 2024 |
| Fishguard and Goodwick Rugby Football Club Limited | Arts & recreation | 2022 |
| Fishguard and Goodwick Young Persons Trust Ltd | Health & social care | 2001 |
| Fishguard Chiropractic Clinic Limited | Health & social care | 2015 |
| Fishguard Fish and Chips Ltd | Hospitality | 2018 |
| Fishguard Laundry Service Limited | Administrative & support | 2024 |
| Fishguard Veterinary Services Limited | Professional & scientific | 2012 |
| Fit Publishing Ltd | Information & communication | 2016 |
| Fletcher & SON Limited | Construction | 2017 |
| Flock of Clouds Ltd | Information & communication | 2016 |
| Frazer-Nash Bristol Cars Ltd | Wholesale & retail | 2018 |
| Frazer-Nash Cars Ltd | Wholesale & retail | 2018 |
| Freckles Cafe Company Limited | Hospitality | 2023 |
| Friends of Theatr Gwaun Community Interest Company | Arts & recreation | 2012 |
| G I Lewis Limited | Construction | 2015 |
| G M Moss Repairs Ltd | Wholesale & retail | 2003 |