| Clever Box (Tenby) Limited | Construction | 2016 |
| Coach House Tenby (Management) Ltd | Households | 2024 |
| Coastal Cottages Trust Ltd | Education | 2017 |
| Coastal Developments Tenby Ltd | Construction | 2018 |
| Coastal Resorts Limited | Hospitality | 2007 |
| Coastbuild Ltd | Construction | 2017 |
| Coastbuild Projects Ltd | Real estate | 2020 |
| Cobourg Development Company Limited | Construction | 2005 |
| Cobourg Management Co Ltd | Households | 2008 |
| Cobourg Pubs Limited | Real estate | 2022 |
| Cold Sky Limited | Financial services | 2013 |
| Connaught House (Tenby) Management Company Limited | Households | 2018 |
| Connect: Pembrokeshire Ltd | Professional & scientific | 2023 |
| Cooke Arts Ltd | Professional & scientific | 2013 |
| Cove Marine Services Ltd | Professional & scientific | 2018 |
| Crackwell Holdings Ltd | Financial services | 2025 |
| Crackwell Holiday Park Ltd | Hospitality | 2021 |
| Crayford Cars Limited | Professional & scientific | 1998 |
| Crayford Special Ventures Limited | Real estate | 1970 |
| Created by CAL Ltd | Information & communication | 2025 |
| Creative Metal Art Limited | Wholesale & retail | 2022 |
| Croft Court Properties (Tenby) Limited | Real estate | 1973 |
| Croft House Tenby Limited | Hospitality | 2015 |
| Cromwell Construct Ltd | Construction | 2024 |
| Cromwell Drive Management Limited | Professional & scientific | 1995 |
| Crow Cabs Ltd | Transport & logistics | 2022 |
| Cysgu DDA - Sleep Well Ltd | Real estate | 2014 |
| Cŵlbox Limited | Hospitality | 2017 |
| D & D Lignum Ltd | Hospitality | 2018 |
| Damisu Limited | Arts & recreation | 2009 |
| DAN Anthony Presentations Limited | Arts & recreation | 2013 |
| Danomi Enterprises Limited | Construction | 2014 |
| Danomi Holdings Limited | Financial services | 2024 |
| Darkcloth Productions Ltd | Arts & recreation | 2016 |
| Darkfield Technologies Ltd | Professional & scientific | 2023 |
| David Trenchard Consulting Ltd | Professional & scientific | 2015 |
| Davies Builders Merchants Limited | Wholesale & retail | 2014 |
| Davies Farms (Carew) Limited | Agriculture & fishing | 1969 |
| DE Rutzen Limited | Households | 1998 |
| DE Valence Pavilion Tenby CIC | Arts & recreation | 2024 |
| Dennis Cafe Limited | Hospitality | 2013 |
| DO Theatre Productions Ltd | Arts & recreation | 2017 |
| DRT Marine Ltd | Transport & logistics | 2023 |
| DSW Holdings Limited | Hospitality | 2024 |
| Dust's Away Cleaning Services Ltd | Administrative & support | 2023 |
| E & S Leisure Limited | Arts & recreation | 2023 |
| East Jordeston Estate Management Ltd | Households | 2025 |
| East Rock Tenby Ltd | Hospitality | 2024 |
| EBB & Flow Tenby Ltd | Wholesale & retail | 2021 |
| Edudan Limited | Hospitality | 2024 |
| Elias Civil & Plant Ltd | Construction | 2024 |
| Elias Leisure Services Ltd | Real estate | 2024 |
| Elias Resurfacing & Resin Ltd | Construction | 2023 |
| Evergreen Inn (Tenby) Ltd | Hospitality | 2025 |
| Expo Tools Limited | Wholesale & retail | 2022 |
| Exterior Clean Pembs Ltd | Administrative & support | 2024 |
| F B (Airports) Limited | Arts & recreation | 2008 |
| Family Law Paralegal Services Ltd | Professional & scientific | 2023 |
| FAR West Travel Limited | Extraterritorial | 1987 |
| Five Arches Car Park Limited | Other services | 2011 |
| Flesher Developments Limited | Construction | 2001 |
| Fold Collective Limited | Real estate | 2025 |
| FONESOLUTIONS17 Ltd | Wholesale & retail | 2023 |
| Foster-James Investments Limited | Real estate | 2021 |
| Frank Booth & Sons Limited | Arts & recreation | 1961 |
| Freedom Equity Release Limited | Extraterritorial | 2005 |
| Geraint D Jones & SON Limited | Construction | 2016 |
| Gez's Gourmet Grub Ltd | Hospitality | 2026 |
| Giltar Hotel Ltd | Hospitality | 2008 |
| Govan Davies Estates Limited | Construction | 1995 |
| Grange Manorbier Ltd | Hospitality | 2022 |
| Grayconn UK Limited | Hospitality | 2024 |
| Greenhills Hotel Limited | Hospitality | 2018 |
| Greymalkin Consulting Ltd | Professional & scientific | 2017 |
| Gulfstream Engineering Limited | Professional & scientific | 1997 |
| Gumfreston Farm Ltd | Manufacturing | 2025 |
| Hall House Estates Ltd | Real estate | 2022 |
| Happy Starfish Marketing Limited | Professional & scientific | 2010 |
| Harbour Brewery Tenby Limited | Manufacturing | 2014 |
| Harbour Catering Ltd | Hospitality | 2020 |
| Harbour Court (Tenby) Management Company Limited | Hospitality | 1977 |
| Harbour Property Group Ltd | Professional & scientific | 2023 |
| Harbour Wealth (Pembs) Ltd | Financial services | 2021 |
| Harbour Wealth Holdings Limited | Financial services | 2022 |
| Harbour Wealth Limited | Financial services | 2003 |
| Harbwr Saundersfoot Limited | Hospitality | 2021 |
| Harbwr Tenby Limited | Hospitality | 2021 |
| Harris and Thomas Limited | Construction | 2014 |
| Hazelbrook Enterprises Ltd | Hospitality | 2025 |
| Help@Homeservicespembs Limited | Administrative & support | 2025 |
| Hidden G Ltd | Hospitality | 2024 |
| High Plateau Consulting Limited | Administrative & support | 2021 |
| High Tide Property Cleaning Ltd | Administrative & support | 2023 |
| Hilling and Allen Limited | Construction | 2005 |
| Hilltop Developments Limited | Construction | 1995 |
| Hiyatree Limited | Extraterritorial | 2023 |
| Holborn Property Holdings Limited | Real estate | 2022 |
| Homeleigh Developments Limited | Construction | 1994 |
| Hope & Anchor Tenby Limited | Hospitality | 2022 |
| Hot TUB Maintenance Pembrokeshire Ltd | Administrative & support | 2025 |