| 1-3 High Street Pembroke Dock Management Company Ltd | Households | 2008 |
| 16573466 Ltd | Information & communication | 2025 |
| 1C Properties Limited | Construction | 2025 |
| 3PWELL Ltd | Wholesale & retail | 2025 |
| 51 Conversions Limited | Wholesale & retail | 2020 |
| A & a Scaffolding (Pembs) Ltd | Construction | 2022 |
| A J Ludlow Ltd | Manufacturing | 2018 |
| A Weigh With Words Ltd | Health & social care | 2023 |
| AAD Pembs Limited | Administrative & support | 2016 |
| Ace Scaffolding Services Ltd | Construction | 2024 |
| Adapt Management Ltd | Administrative & support | 2023 |
| Airload Engineering Limited | | 1981 |
| Al.B Mechanical Services Ltd | Professional & scientific | 2018 |
| ALL Pembrokeshire Recycling Ltd | Water & waste | 2023 |
| ALL Pembrokeshire Scaffolding Limited | Other services | 2017 |
| Alliance Lifting Services Limited | Other services | 1991 |
| Altary Clean Ltd | Administrative & support | 2023 |
| Altus Developments Ltd | Construction | 2019 |
| Altus Financial Ltd | Other services | 2015 |
| Amelia Grainger Enterprises Ltd | Extraterritorial | 1995 |
| AMP Tax Ltd | Professional & scientific | 2025 |
| Amspec Services Ltd | Administrative & support | 2018 |
| Ananay Properties Ltd | Real estate | 2024 |
| Andrew Mcgregor Fitness Ltd | Other services | 2023 |
| Angelas Cleaning Services Limited | Administrative & support | 2020 |
| Apex Protein Supply Limited | Professional & scientific | 2025 |
| Appliance Supermarket Limited | Construction | 2024 |
| Arandano CYF. | Wholesale & retail | 2018 |
| Aresearchstudio Ltd | Professional & scientific | 2022 |
| Ascona (PRS) Limited | Other services | 2017 |
| Ascona Estates (DCB) Limited | Real estate | 1995 |
| Ascona Estates (Two) Ltd | Wholesale & retail | 1952 |
| Ascona Estates Limited | Real estate | 2015 |
| Ascona Group Holdings Ltd | Financial services | 2018 |
| Ascona Group Holdings Midco Limited | Financial services | 2024 |
| Ascona Hospitality Limited | Construction | 1987 |
| Ascona Newco Limited | Financial services | 2026 |
| Ascona Retail (Commops) Limited | Wholesale & retail | 2013 |
| Ascona Retail (Leases) Limited | Real estate | 2015 |
| Ascona Retail Leases (Two) Limited | Wholesale & retail | 1973 |
| Ascona Retail Limited | Wholesale & retail | 2011 |
| Aspis Consulting Group (ACG) Limited | Professional & scientific | 2025 |
| Aston Lyon Limited | Real estate | 2023 |
| Atlantic Industries Limited | Information & communication | 1997 |
| Atlantic Trampolines Limited | Wholesale & retail | 2006 |
| Autoall Limited | Administrative & support | 2002 |
| Ballanwood Castle Estates Limited | Real estate | 2023 |
| Ballanwood Estates Ltd | Real estate | 2018 |
| Ballanwood Finance Limited | Financial services | 2026 |
| Ballanwood Group Limited | Professional & scientific | 2026 |
| Ballanwood Law Limited | Professional & scientific | 2026 |
| Ballanwood Ltd | Other services | 2018 |
| Baxter Park Property Ltd | Real estate | 2024 |
| BBN Solutions Limited | Information & communication | 2016 |
| Beatrix Limited | Wholesale & retail | 2018 |
| Big Brums Limited | Wholesale & retail | 2011 |
| Bleucare Services Ltd | Health & social care | 2026 |
| Blue Current Surveys Ltd | Professional & scientific | 2025 |
| Blue GEM Wind Limited | Professional & scientific | 2017 |
| Blue Sky Marquees Limited | Other services | 2010 |
| BM Ecology Ltd | Professional & scientific | 2020 |
| Bonded Estates Limited | Real estate | 2022 |
| Bozdag Ltd | Hospitality | 2026 |
| Bramko Engineering Limited | Professional & scientific | 2012 |
| Busa Engineering Limited | Professional & scientific | 2019 |
| Butland House Holiday Homes Ltd | Hospitality | 2024 |
| BW3 Estates Limited | Real estate | 2023 |
| Cactus & Co UK Limited | Wholesale & retail | 2017 |
| Caitlin Rosina Beauty Ltd | Other services | 2024 |
| Capital Roasters Limited | Manufacturing | 1999 |
| Cardcraft of Pembrokeshire Limited | Wholesale & retail | 2013 |
| Carl Williams Entertainments Ltd | Other services | 2021 |
| Castle Partnership Limited | Real estate | 2023 |
| Castle Vantage Estates Limited | Real estate | 2023 |
| CBD Communications Limited | Information & communication | 2004 |
| CDS Phoenix Ltd | Hospitality | 2024 |
| CE Marking Limited | Professional & scientific | 2018 |
| Celtic Foodservices Ltd | Wholesale & retail | 2009 |
| Celtic Wines Limited | Wholesale & retail | 2003 |
| Central Motor Parts Ltd | Wholesale & retail | 2021 |
| Cfreesolutions Ltd | Other services | 2025 |
| Charcon Properties Limited | Real estate | 2026 |
| Charlton Place 1962 Limited | Extraterritorial | 2014 |
| Charoensawat Ltd | Hospitality | 2021 |
| Chawdin Ltd | Hospitality | 2024 |
| Chelsea Middleton Nails Ltd | Other services | 2022 |
| Cherrywood Care Limited | Health & social care | 2016 |
| Clare Associates Limited | Information & communication | 2002 |
| Coastal & Rural Lettings Ltd | Real estate | 2024 |
| Cobra Real Estate Ltd | Real estate | 2024 |
| Collins Estates Limited | Real estate | 2002 |
| Containers Hostels Ltd | Hospitality | 2012 |
| Coolload Limited | Transport & logistics | 2002 |
| Cornwall Garage (Group) Limited | Wholesale & retail | 1992 |
| Cornwall Garage (Henlow) Limited | Wholesale & retail | 1978 |
| Cosh Cottages Limited | Administrative & support | 2018 |
| Crew Technical Services Limited | Professional & scientific | 2010 |
| Croeso Properties Ltd | Real estate | 2024 |
| Cscape Consulting Ltd | Professional & scientific | 2019 |
| CTD Care Services Limited | Health & social care | 2022 |