| Rushacre Garage Ltd | Wholesale & retail | 2010 |
| RWG Plant Ltd | Construction | 2019 |
| Ryan Griff Welding and Fabrication Limited | Manufacturing | 2024 |
| Safari Resources Ltd | Extraterritorial | 2025 |
| Safari Spaces Ltd | Administrative & support | 2019 |
| Salmon & Son(Narberth)Limited | Real estate | 1955 |
| Sandy Bear Children's Bereavement Charity | Health & social care | 2019 |
| Sardis Leisure Park Ltd | Hospitality | 2020 |
| Scaffold 2000 Ltd | Construction | 2009 |
| SD Imaging Ltd | Health & social care | 2025 |
| Seazou Aquaculture Ltd | Agriculture & fishing | 2024 |
| Secure Legal Services Limited | Professional & scientific | 2005 |
| Serennu Therapies Ltd | Health & social care | 2024 |
| SFC Maintenance Ltd | Households | 2018 |
| Shaad Narberth Ltd | Hospitality | 2019 |
| Shipping Developments Ltd | Construction | 2020 |
| Shwani's Best Barber Ltd | Other services | 2026 |
| Silverstone Green Energy Ltd | Wholesale & retail | 2010 |
| Simply Milk Limited | Wholesale & retail | 2024 |
| Simply Pasteurising Pembs Limited | Construction | 2019 |
| Simply Vending Pembrokeshire Ltd | Manufacturing | 2019 |
| Skeel Construction Services Limited | Construction | 2014 |
| Solar Farm Services Limited | Manufacturing | 2022 |
| Solar Wave Cleaners Limited | Administrative & support | 2024 |
| Solarcell (UK) Ltd | Energy | 2011 |
| Sound Dog Media Ltd | Manufacturing | 2021 |
| Spencer Macdonald & Associates Limited | Real estate | 1993 |
| Spiritwood LLP | | 2018 |
| Spvrg Limited | Other services | 2020 |
| ST NON Projects Limited | Real estate | 2025 |
| ST Oswalds Community Centre | Real estate | 2012 |
| Stella Narbeth Limited | Construction | 2013 |
| Stepaside Coachworks Limited | Wholesale & retail | 2015 |
| Stepaside Cottages Limited | Hospitality | 2003 |
| Stepaside Cottages Management Ltd | Households | 2018 |
| Steve Hole Architects LLP | | 2012 |
| Supreme Recruitment UK Ltd | Other services | 2018 |
| Sure Eco Surveys Limited | Professional & scientific | 2024 |
| Sursum Tattoo Ltd | Other services | 2025 |
| Sutim Healthcare Services Ltd | Public administration | 2025 |
| SW Arkenstone Limited | Professional & scientific | 2023 |
| TAN Y Castell (Foods) Limited | Manufacturing | 2008 |
| Tax Doctor Refunds.Co.Uk Ltd | Professional & scientific | 2005 |
| Telecomms Facilities Limited | Professional & scientific | 1983 |
| Templeton Beer Wine & Spirit Co Ltd | Wholesale & retail | 2007 |
| Tenby Adventure Limited | Administrative & support | 2022 |
| Tenby Boat Trips Limited | Transport & logistics | 2014 |
| Tenby Caravan Services Limited | Manufacturing | 2016 |
| Tenby Seal Safari Limited | Transport & logistics | 2012 |
| Tenby Tourers Caravan & Camping Limited | Wholesale & retail | 2009 |
| Tenby Tourers Ltd | Wholesale & retail | 2012 |
| Tenby Watersports Ltd | Arts & recreation | 2007 |
| Tendernest Healing CIC | Education | 2025 |
| Terry Harrison Machinery Limited | Manufacturing | 2014 |
| THE Angel Hotel (Narberth) Ltd | Hospitality | 2019 |
| THE Barley Gastrobar Ltd | Hospitality | 2025 |
| THE Chapel Field Gardens Flats Management Company Limited | Households | 1992 |
| THE FOX and Hounds Bancyfelin Ltd | Hospitality | 2018 |
| THE Golden Sheaf Gallery Limited | Wholesale & retail | 2002 |
| THE Handmade Universe Limited | Wholesale & retail | 2023 |
| THE Holding Cell Ltd | Information & communication | 2022 |
| THE Injury Room Ltd | Health & social care | 2023 |
| THE Queens Hall, Narberth | Arts & recreation | 2011 |
| THE Smugglers Amroth Ltd | Hospitality | 2025 |
| THE Star in Narberth Ltd | Hospitality | 2024 |
| THE Tiger Team (Narbella) LLP | | 2023 |
| Thomas & Tomas Ltd | Hospitality | 2023 |
| Thornton's H.T. Limited | Real estate | 1959 |
| Tiger Babs Limited | Real estate | 2023 |
| TOM Hughes Limited | Wholesale & retail | 2002 |
| Top Crew Billing Ltd | Wholesale & retail | 2019 |
| Total Fieldsports Ltd | Arts & recreation | 2021 |
| Total Tech Ltd | Information & communication | 2015 |
| Tower Utilities Ltd | Extraterritorial | 2004 |
| TP10 Limited | Information & communication | 2009 |
| Trade Frame Manufacturers Limited | Manufacturing | 2001 |
| Trade Wind Energy Limited | Construction | 2014 |
| Tribrach Surveys and Civils Ltd | Professional & scientific | 2016 |
| Two BAD Mice Publishers Limited | Manufacturing | 1982 |
| Unique by Design Limited | Construction | 2011 |
| Unleashed Homes Ltd | Information & communication | 2022 |
| UP 4 Coaching Ltd | Professional & scientific | 2020 |
| V M Clark Limited | Construction | 2015 |
| Valley Gate Limited | Agriculture & fishing | 2013 |
| Valuemycaravangroup Ltd | Hospitality | 2022 |
| Vaynor Farm Limited | Agriculture & fishing | 2003 |
| Victoria Mcandrew Ltd | Professional & scientific | 2024 |
| Vuetrain Limited | Arts & recreation | 2016 |
| W Bull Holdings Limited | Financial services | 2024 |
| W. J. Belt Transport (Wales) Limited | | 1986 |
| Watersedge Family Limited | Financial services | 2019 |
| Wave Property Management Ltd | Households | 2023 |
| Way Education Limited | Education | 2016 |
| West Wales Scaffolding Pembrokeshire Limited | Construction | 2023 |
| Westminster Developments (Leicester) Limited | Real estate | 2007 |
| White Boutiques Limited | Wholesale & retail | 2012 |
| Williams Vision Ltd | Manufacturing | 2025 |
| Wilmer Ruskin Limited | Other services | 1991 |
| Winchester House Limited | Health & social care | 2017 |
| Wisemans Bridge Inn Ltd | Hospitality | 2023 |