| My Agriplant Ltd | Manufacturing | 2023 |
| Na-Ekow Creative Ventures Ltd | Administrative & support | 2020 |
| Nateswar Limited | Hospitality | 2025 |
| National Raffle Competitions Ltd | Other services | 2025 |
| NB Financial Ltd | Financial services | 2019 |
| Nebula Surfacing Limited | Construction | 2026 |
| Ners Group Ltd | Financial services | 2026 |
| New China Cottage Ltd | Hospitality | 2012 |
| New Day Children's Services Ltd | Health & social care | 2023 |
| New Jambo Ltd | Hospitality | 2025 |
| New Lease Consulting Ltd | Professional & scientific | 2024 |
| New Solution Distribution Ltd | Manufacturing | 2019 |
| Nexzen Personnel Ltd | Administrative & support | 2024 |
| Nicholas Young Consulting Ltd | Financial services | 2025 |
| Nova Motorsport Limited | Manufacturing | 2023 |
| Novocomms Space and Defence Limited | Information & communication | 2024 |
| Novora Payroll Services Ltd | Professional & scientific | 2025 |
| Npnd Plates Ltd | Wholesale & retail | 2026 |
| Number Twelve Unisex Hairdressing Limited | Other services | 2002 |
| Oakhill Limited | Professional & scientific | 1996 |
| Oaktree Joinery Limited | Manufacturing | 2004 |
| Odee Consulting Ltd | Other services | 2009 |
| Odysseus Coaching Limited | Administrative & support | 2016 |
| Old Dilton Farm Barns Management Limited | Households | 2005 |
| Oldrey Heritage Estates Ltd | Real estate | 2025 |
| Oliver Neech Ltd | Administrative & support | 2013 |
| On-Group Limited | Wholesale & retail | 2003 |
| On-Nutrition Limited | Extraterritorial | 2001 |
| Online Consultancy UK Ltd | Professional & scientific | 2025 |
| Only Futures Ltd | Information & communication | 2025 |
| Only Skin Deep Tattoo Ltd | Other services | 2017 |
| Op.Ex. (Operational Excellence) Ltd | Professional & scientific | 2025 |
| Orchard Hall RTM Company Limited | Real estate | 2006 |
| Organatural Ltd | Manufacturing | 2006 |
| Origin ARB Ltd | Professional & scientific | 2020 |
| Ornamental Aquatic Trade Association Ltd. | Other services | 1992 |
| OSD Art Ltd | Arts & recreation | 2023 |
| OSD Enterprises Ltd | Arts & recreation | 2015 |
| Osdp Ltd | Other services | 2021 |
| Oxford Mews Westbury Limited | Real estate | 2014 |
| Oxygen Pressure Atmospheric Technologies (Opat) Ltd. | Administrative & support | 2002 |
| Ozplay Ltd | Health & social care | 2023 |
| P S Plumbing (Commercial) Limited | Construction | 2013 |
| P.C. Test Service Limited | Information & communication | 2013 |
| P.E.D Accountancy & Consultancy Ltd | Professional & scientific | 2017 |
| Pactsmith Ltd | Information & communication | 2025 |
| Page Electrical (SW) Ltd | Construction | 2018 |
| Pagurek Limited | Manufacturing | 2014 |
| Painting and Pins Limited | Other services | 2020 |
| Pano Bakehouse Ltd | Manufacturing | 2022 |
| Paper BAG Co (South West) Ltd | Manufacturing | 2015 |
| Parabellum Advisory Limited | Professional & scientific | 2026 |
| Parker Chapman Limited | Professional & scientific | 2023 |
| Partner Digital Ltd | Wholesale & retail | 2020 |
| Passivhaus Plus Ltd | Construction | 2023 |
| Patrico Limited | Wholesale & retail | 1983 |
| Pawfect Gift Box Ltd | Wholesale & retail | 2020 |
| Paxcroft News Limited | Wholesale & retail | 2019 |
| Paxcroft Osteopathy Ltd | Health & social care | 2025 |
| Pbrk Advisory Ltd | Professional & scientific | 2025 |
| Pbwm Building Services Ltd | Energy | 2010 |
| PCA Business Partners Limited | Professional & scientific | 2013 |
| PDI Engineering Ltd | Professional & scientific | 2024 |
| Pela Systems Limited | Manufacturing | 2013 |
| Pelatech Group Limited | Professional & scientific | 2013 |
| Peninsula Sand Holdings Limited | Financial services | 2017 |
| Penleigh Irving Limited | Manufacturing | 1990 |
| Perfectly Caring Ltd | Administrative & support | 2021 |
| Perfeito Events Limited | Other services | 2025 |
| PGS Tips Ltd | Professional & scientific | 2025 |
| Phoenix Business Systems Limited | Professional & scientific | 2009 |
| Pickleberry Cafe Ltd | Hospitality | 2025 |
| Pierre Cochon Limited | Manufacturing | 2009 |
| Pikki Pooch Limited | Other services | 2022 |
| Piling and Structural Services Limited | Construction | 2009 |
| Pinniger Finch and Co Limited | Professional & scientific | 2023 |
| Pipster Solutions Ltd | Administrative & support | 2012 |
| Planet & Prosperity Limited | Professional & scientific | 2010 |
| Plastic Services Ltd | Manufacturing | 2015 |
| Plateplus Limited | Manufacturing | 2021 |
| PMJ Group Ltd | Professional & scientific | 2023 |
| PNS Management Limited | Administrative & support | 2020 |
| Polar Truck & Van (Westbury) Limited | Manufacturing | 2024 |
| Polar Truck & Van Limited | Manufacturing | 2004 |
| Ponies & Paws Limited | Administrative & support | 2023 |
| Portway Advisory Ltd | Information & communication | 2024 |
| Positech Computing Limited | Information & communication | 1998 |
| Positech Energy Ltd | Energy | 2021 |
| Positive Services (Electrical) Limited | Manufacturing | 2016 |
| Power Market Limited | Professional & scientific | 2000 |
| Prestige Automotive and Logistics Limited | Transport & logistics | 2023 |
| Prestige Professional (South West) Limited | Households | 2025 |
| Prickly Pear Productions Limited | Hospitality | 2022 |
| Prime Products Wholesale Ltd | Wholesale & retail | 2022 |
| Priority Access Ltd | Transport & logistics | 2025 |
| Priority IT Solutions Limited | Information & communication | 2010 |
| Privett's Heating & Plumbing Engineers Ltd | Construction | 2016 |
| Prizr Ltd | Arts & recreation | 2024 |
| Pro Tect Solutions Consultancy Ltd | Professional & scientific | 2023 |
| Prodio Ltd | Administrative & support | 2025 |