| Oakhill House Limited | | 2023 |
| Ocean Transit Operations Limited | Transport & logistics | 2014 |
| Olive & Harley’S Hair Beauty Skin Limited | Other services | 2021 |
| Out-West Safety & Training Ltd | Professional & scientific | 2021 |
| Outer Reef Surf Travel Limited | Administrative & support | 2025 |
| Owen & Owen Ltd | Real estate | 2019 |
| Owen & Richards Construction Ltd | Construction | 2026 |
| Owen Howells Photography Ltd | Professional & scientific | 2013 |
| Paddle Pembrokeshire Ltd | Arts & recreation | 2023 |
| PAL Overseas Ltd | Administrative & support | 2023 |
| Parkside Diner Ltd | Hospitality | 2024 |
| Paterchurch Limited | Construction | 2011 |
| Paternoster Farm CYF | Hospitality | 2023 |
| Paul Wheeler Welding Services Limited | Other services | 2017 |
| PBS Construction & Design Ltd | Construction | 2013 |
| PC Plastics Ltd | Professional & scientific | 2026 |
| Pembridge Place Limited | | 2023 |
| Pembroke Barber Shop Limited | Other services | 2025 |
| Pembroke Castle Shop Limited | Wholesale & retail | 2003 |
| Pembroke in Motion Ltd | Arts & recreation | 2026 |
| Pembroke Power Station Sports & Social Club Limited | Arts & recreation | 1998 |
| Pembroke Rugby Football Club (Holdings) Limited | Arts & recreation | 2018 |
| Pembroke Rugby Football Club Limited | Arts & recreation | 2018 |
| Pembroke Soft Limited | Wholesale & retail | 1996 |
| Pembroke Tandoori Ltd | Hospitality | 2026 |
| Pembrokeshire Built Heritage Community Interest Company | Construction | 2020 |
| Pembrokeshire Cast Stone Limited | Manufacturing | 2007 |
| Pembrokeshire Chilli Farm Limited | Manufacturing | 2021 |
| Pembrokeshire Cider Limited | Manufacturing | 2016 |
| Pembrokeshire Mencap Ltd. | Health & social care | 2006 |
| Pembrokeshire Metal Recycling Limited | Water & waste | 2014 |
| Pembrokeshire Powder Coating Ltd | Manufacturing | 2023 |
| Pembrokeshire Property Group Limited | Households | 2026 |
| Pembrokeshire Stained Glass Ltd | Manufacturing | 2003 |
| Pembs Recycling Ltd | Water & waste | 2025 |
| Penally Abbey Hotel Limited | Hospitality | 2014 |
| Pendock Developments Ltd | Construction | 2024 |
| Penfro Haven Ltd | Other services | 2026 |
| Penfro Lettings Ltd | Hospitality | 2025 |
| Penmaenuchaf Dolgellau Ltd | Hospitality | 2022 |
| People Coaching Limited | Administrative & support | 2021 |
| Peter Holden Architects Limited | Professional & scientific | 1995 |
| PHC Holdings Limited | Administrative & support | 2007 |
| Popat Limited | Education | 1999 |
| Portclew Walled Gardens Ltd | Hospitality | 2021 |
| Primeline Roofing Guttering Improvements Ltd | Construction | 2026 |
| Priory Farm Investments Limited | Real estate | 2007 |
| Priory Property Maintenance (Pembs) Ltd | Construction | 2018 |
| Property Agricultural & Marine Management Ltd | Professional & scientific | 2008 |
| PSM Recycling and Hiab Services Ltd | Water & waste | 2019 |
| Purchasing Processes Limited | Professional & scientific | 2002 |
| Pure Air Services Ltd | Other services | 2017 |
| Pure Air Solutions 2024 Ltd | Construction | 2024 |
| Quality Pods (Wales) Ltd | Construction | 2017 |
| Quarta Ltd | Construction | 2003 |
| Raccoon Consultancy Ltd | Professional & scientific | 2024 |
| Rank Retail Ltd | Wholesale & retail | 2022 |
| Removeamber Limited | Agriculture & fishing | 1998 |
| Renaissancere Services Ltd. | | 2019 |
| RIO GH Limited | Manufacturing | 2017 |
| RM Finance Solutions Limited | Professional & scientific | 2021 |
| RMJ Studio Ltd | Hospitality | 2020 |
| Robco Engineering Limited | Professional & scientific | 2009 |
| Rose Robotics Ltd | Information & communication | 2026 |
| Routescape Limited | Administrative & support | 2018 |
| RP Automation Ltd | Information & communication | 2012 |
| Saal Wealth Management Ltd. | Financial services | 2012 |
| Samuel Thomas Holdings Limited | Real estate | 2021 |
| Sara Safety Solutions Ltd | Administrative & support | 2014 |
| Saving Cavaliers UK Ltd | Other services | 2020 |
| Sazani Associates | Professional & scientific | 2005 |
| Scaffolding Computer Designs Ltd | Construction | 2003 |
| Scarffio Ltd | Manufacturing | 2022 |
| Scourfield & SON Ltd | Manufacturing | 2016 |
| Sea & Flood Defences Ltd | Construction | 2014 |
| Seniorselect Limited | Information & communication | 1991 |
| Seren Management Services Ltd | Real estate | 2021 |
| Shangri LA Chapel Hill Ltd | Health & social care | 2014 |
| Shark Realty Ltd | Real estate | 2023 |
| Sharkbyte Consultancy Limited | Information & communication | 2015 |
| Signature Floors Pembroke Ltd | Construction | 2020 |
| SJ Professional Solutions CYF | Professional & scientific | 2025 |
| Skerryback Holdings Ltd | Financial services | 2026 |
| Skerryback Ltd | Financial services | 2026 |
| Slotplay Limited | Professional & scientific | 2014 |
| Smart Spark Pembs Ltd | Construction | 2024 |
| SMR Holdings U.K. Ltd | Financial services | 2025 |
| SNS Duffy Ltd | Manufacturing | 2018 |
| South Pembrokeshire Woodlands Ltd | Administrative & support | 2024 |
| Spahaus Limited | Manufacturing | 2004 |
| Speculation Leisure Ltd | Hospitality | 2022 |
| Speculation Sunrise Ltd | Hospitality | 2024 |
| Sport 4 ALL Ltd | Education | 2025 |
| ST. J Property Ltd | | 2023 |
| Stable Energy Ltd | Energy | 2018 |
| Stackpole Under the Stars Ltd | Hospitality | 2017 |
| Starre Gorse Holiday Park Ltd | Hospitality | 2003 |
| Steam View Caravans Limited | Hospitality | 2024 |
| Steeloak Limited | Other services | 2017 |
| Sugar Beach Tanning Ltd | Other services | 2021 |