| Order Your Life Ltd | Extraterritorial | 2020 |
| Oriental Invest Limited | Administrative & support | 2015 |
| Orthophysio Medical Consultancy Ltd | Health & social care | 2025 |
| Otters Holt Haylage Co Ltd | Agriculture & fishing | 2013 |
| Outdoor Activities Advisory Service Limited | Other services | 2011 |
| Outsource ME Limited | Administrative & support | 2011 |
| Outwear Clothing Ltd | Wholesale & retail | 2024 |
| Oxford Space Labs Limited | Information & communication | 2017 |
| Oxfordshire GM Limited | Agriculture & fishing | 2015 |
| Oxytrade LP | | 2022 |
| P & M Commercial Property Management Limited | Real estate | 2021 |
| P.G.S. Fabrications 98 Limited | Manufacturing | 2002 |
| P.J. George (Vehicle Sales) Limited | Wholesale & retail | 2003 |
| Pacific Gate Resources Ltd | Extraterritorial | 2013 |
| Packward Properties Limited | Hospitality | 2017 |
| Paeek Ltd | Other services | 2022 |
| Paide Ltd | Other services | 2022 |
| Palinost Ltd | Arts & recreation | 1997 |
| PAN Tropic Limited | Agriculture & fishing | 2022 |
| Panacure Ltd | Administrative & support | 2025 |
| Panicker and Fraser Ltd | Hospitality | 2023 |
| Panicker Properties Ltd | Real estate | 2025 |
| Panon Ltd | Other services | 2021 |
| Paragon Safety Ltd | Professional & scientific | 2013 |
| Paris House Shoes Limited | Wholesale & retail | 2002 |
| Parkwood Limited | Construction | 2001 |
| Parliamentary Trains Ltd | Manufacturing | 2013 |
| Parsley Property Ltd | Hospitality | 2024 |
| Partiesun Ltd. | Real estate | 1999 |
| PAS Surveying Services Ltd | Professional & scientific | 2024 |
| Passionate About Life Ltd | Extraterritorial | 2023 |
| Path to Inner Knowledge Ltd | Extraterritorial | 2024 |
| Paul Holmes Mobile Catering Limited | Hospitality | 2003 |
| Paul Morris Landscaping Limited | Administrative & support | 2001 |
| Paul Morris Properties Ltd | Hospitality | 2020 |
| Paul Sartori Foundation Limited | Health & social care | 1982 |
| Paul Terry Limited | Professional & scientific | 2003 |
| Paul York Ltd | Construction | 2007 |
| Paulsculpz Ltd | Manufacturing | 2025 |
| Peartree Wellness Ltd | Education | 2025 |
| Pemberton Jones Limited | Real estate | 1988 |
| Pembroke Carvery (Pembroke) Limited | Hospitality | 2018 |
| Pembroke Coachworks Limited | Wholesale & retail | 1991 |
| Pembroke Motor Services Limited | Wholesale & retail | 1991 |
| Pembrokeshire Agricultural Society Limited | Agriculture & fishing | 2014 |
| Pembrokeshire and Carmarthen Mind Ltd | Health & social care | 2013 |
| Pembrokeshire Apprenticeship Scheme | Education | 2014 |
| Pembrokeshire Biosolids Ltd | Water & waste | 2020 |
| Pembrokeshire Build Limited | Construction | 2019 |
| Pembrokeshire Car and Commercial Limited | Wholesale & retail | 2002 |
| Pembrokeshire Care Society | Other services | 1995 |
| Pembrokeshire Community Events CIC | Arts & recreation | 2025 |
| Pembrokeshire Construction Company Ltd | Construction | 2018 |
| Pembrokeshire Creamery Limited | Manufacturing | 2021 |
| Pembrokeshire Drinks Limited | Wholesale & retail | 2004 |
| Pembrokeshire E Bike Hire Limited | Transport & logistics | 2021 |
| Pembrokeshire Education and Community Empowerment CIC | Education | 2024 |
| Pembrokeshire Fishing Ltd | Hospitality | 2011 |
| Pembrokeshire Frame Enterprises Limited | Real estate | 2018 |
| Pembrokeshire Frame Limited | Health & social care | 2000 |
| Pembrokeshire Gelato Ltd | Manufacturing | 2021 |
| Pembrokeshire Historic Buildings Trust | Education | 2000 |
| Pembrokeshire Holdings Ltd | Manufacturing | 2019 |
| Pembrokeshire Home and Garden Limited | Extraterritorial | 2010 |
| Pembrokeshire Home Improvements Limited | Wholesale & retail | 1991 |
| Pembrokeshire Larder Food Company Ltd | Hospitality | 2018 |
| Pembrokeshire Lettings Ltd | Real estate | 2015 |
| Pembrokeshire Ltd | Real estate | 2020 |
| Pembrokeshire Motor Museum Developments Ltd | Construction | 2020 |
| Pembrokeshire Mudslingers OFF Road Club Limited | Arts & recreation | 2012 |
| Pembrokeshire Padel Limited | Arts & recreation | 2026 |
| Pembrokeshire People First | Health & social care | 2002 |
| Pembrokeshire Podiatry Ltd | Health & social care | 2023 |
| Pembrokeshire Powerboating and Sailing Academy Limited | Education | 2020 |
| Pembrokeshire Rental Properties Limited | Real estate | 2023 |
| Pembrokeshire Retail Limited | Hospitality | 2019 |
| Pembrokeshire Safety Services Ltd. | Professional & scientific | 2013 |
| Pembrokeshire Seaweeds Ltd | Manufacturing | 2017 |
| Pembrokeshire Storage Units Ltd | Real estate | 2021 |
| Pembrokeshire Super Whippy Ice Cream Ltd | Hospitality | 2020 |
| Pembrokeshire Surf School Ltd | Education | 2018 |
| Pembrokeshire Timber & Floors Ltd | Manufacturing | 2018 |
| Pembrokeshire Vapes Limited | Wholesale & retail | 2014 |
| Pembrokeshire Voluntary Transport | Transport & logistics | 1999 |
| Pembrokeshire Weightlifting | Arts & recreation | 2016 |
| Pembs Bay Properties Ltd | Real estate | 2023 |
| Pencarnan Caravan Park Limited | Hospitality | 2014 |
| Penfro Limited | Real estate | 1999 |
| Penfro Peche Limited | Professional & scientific | 1989 |
| Peninsula Food Market CIC | Hospitality | 2026 |
| Penney and SON Ltd | Agriculture & fishing | 2019 |
| Penwell Procurement Limited | Construction | 2009 |
| Penza Safety Solutions Ltd | Professional & scientific | 2021 |
| Peppepi Ltd | Wholesale & retail | 2023 |
| Perla Leasing Solutions Ltd | Administrative & support | 2025 |
| Permius Limited | Information & communication | 2020 |
| Personal Assistance Pembrokeshire CIC | Health & social care | 2026 |
| Peter & Sarah Phillips Limited | Agriculture & fishing | 2013 |
| Petersens Food Co.Limited | Other services | 1958 |
| PFC Properties Cymru Ltd | Real estate | 2016 |