| Oakhills Developments Ltd | Construction | 2020 |
| Oakhouse Transformation Ltd | Construction | 2000 |
| Oakleigh Park Investments Ltd | Real estate | 2017 |
| Oakley Wood Property Solutions Ltd | Real estate | 2023 |
| Oakway Property Services Ltd | Financial services | 2025 |
| Oasis Hair Studio Limited | Other services | 2005 |
| Obigini Ltd | Wholesale & retail | 2025 |
| Odette Funeral Director Ltd | Other services | 2017 |
| Ogoja Properties Ltd | Real estate | 2019 |
| OJO Developments Ltd | Construction | 2017 |
| OJO Group Ltd | Financial services | 2017 |
| OJO Solutions Ltd | Professional & scientific | 2024 |
| Olasca Limited | Professional & scientific | 2013 |
| Old Foundry Holdings Ltd | Real estate | 2026 |
| Oldbury Prior Management Limited | Hospitality | 1990 |
| One Seven East Developments Ltd | Construction | 2023 |
| One Seven East Holdings Ltd | Real estate | 2020 |
| Oneboxout Holdings Ltd | Financial services | 2021 |
| Orchard County Property Ltd | Real estate | 2019 |
| ORO Molido Limited | Manufacturing | 2021 |
| Osbert Property Limited | Real estate | 2023 |
| Oselix Limited | Information & communication | 2010 |
| Osman 68 Ltd | Other services | 2025 |
| Otter Interiors Ltd | Professional & scientific | 2025 |
| Outersite Homes Ltd | Real estate | 2020 |
| P & D Automotive Solutions Ltd | Wholesale & retail | 2018 |
| P and N Investments Limited | Financial services | 2026 |
| P&E Board Limited | Construction | 2021 |
| P&M Richards Ltd | Professional & scientific | 2017 |
| P&M Serene Property Investments Ltd | Real estate | 2024 |
| Paddock Retreats Ltd | Professional & scientific | 2023 |
| Palmer-Jones Consulting Limited | Information & communication | 2025 |
| Pangolins Lifestyle Ltd | Wholesale & retail | 2025 |
| Pantheon Property Group Ltd | Real estate | 2025 |
| PAR Foods Limited | Wholesale & retail | 1990 |
| Parable Property Holdings Ltd | Financial services | 2026 |
| Parable Property Investments Ltd | Real estate | 2021 |
| Parable Property Solutions Ltd | Real estate | 2021 |
| Parallel House (Group) Limited | Financial services | 2013 |
| Parea Properties Ltd | Real estate | 2021 |
| Party Dreams Online Ltd | Wholesale & retail | 2014 |
| Patch of Blue Limited | Hospitality | 2007 |
| Patroclus Limited | Real estate | 2016 |
| Patterdale Projects Ltd | Real estate | 2019 |
| Pattlewood Investments Ltd | Real estate | 2020 |
| Paws and Smiles Ltd | Other services | 2025 |
| Pawsative Ltd | Wholesale & retail | 2026 |
| PBS Partners Ltd. | Professional & scientific | 2008 |
| PCD Engineering Services Ltd | Professional & scientific | 2024 |
| PCK Bookkeeping Limited | Professional & scientific | 2019 |
| PEA Homes Ltd | Construction | 2024 |
| Pearl Accommodation Ltd | Real estate | 2021 |
| Pendus Properties Ltd | Real estate | 2023 |
| Perfect Change Building and Landscaping Ltd | Construction | 2026 |
| Permanent Beauty - Cosmetic Tattooing by Wendy Smith Ltd | Other services | 2016 |
| Pete Moore Music Ltd | Arts & recreation | 2026 |
| Peter Hodgson Associates Ltd | Extraterritorial | 2007 |
| PG Property Consultants Ltd | Real estate | 2025 |
| Phil Redmond Consultancy Ltd | Professional & scientific | 2026 |
| Phillip Viles Kitchens & Bathrooms Limited | Construction | 2022 |
| Philtronix Limited | Information & communication | 2015 |
| Phoebe Arfaras Limited | Other services | 2018 |
| Phoenix Features Ltd | Information & communication | 2012 |
| Phoenix Running Wiltshire Limited | Arts & recreation | 2026 |
| PHP Homes Ltd | Construction | 2021 |
| Physigo Ltd. | Professional & scientific | 2018 |
| Pinweld Ltd | Professional & scientific | 2017 |
| Pippin Management (M.C.) Limited | Professional & scientific | 2012 |
| Pixal Systems Ltd | Professional & scientific | 2023 |
| Pjtm Properties Ltd | Real estate | 2026 |
| Plastic Repairs Ltd | Manufacturing | 2015 |
| Plumpy Assets Limited | Administrative & support | 2025 |
| Plumpy Properties Limited | Real estate | 2022 |
| Pmlb Developments Ltd | Financial services | 2015 |
| Pmlb Property Developers Ltd | Construction | 2025 |
| PMR Services Wiltshire Limited | Households | 2026 |
| Pocket Accountancy and Bookkeeping Services Limited | Professional & scientific | 2025 |
| Pocket PA Solutions Limited | Administrative & support | 2024 |
| Polhawn Group Ltd | Financial services | 2022 |
| Polhawn Property Ltd | Real estate | 2021 |
| Polhawn Water Solutions Ltd | Professional & scientific | 2022 |
| Pookies Products Ltd | Wholesale & retail | 2022 |
| Poolman Landscaping & Storage Limited | Manufacturing | 2017 |
| Positive Pathways Nurture Centre Limited | Education | 2024 |
| Powerpanel Solutions Limited | Construction | 2025 |
| Pozza Collective Ltd | Hospitality | 2026 |
| PPL Construction Limited | Manufacturing | 2007 |
| Precipice Solutions Ltd | Professional & scientific | 2023 |
| Preemptive Holdings Ltd | Financial services | 2017 |
| Preemptive Investments Ltd | Real estate | 2017 |
| Preformed Markings (South West) Limited | Construction | 2009 |
| Prema 1 Limited | Information & communication | 2022 |
| PREMA1 Group Ltd | Financial services | 2023 |
| PREMA1 Partners Ltd | Financial services | 2023 |
| Prestwich SA Management Limited | Real estate | 2025 |
| Primary Arts Limited | Education | 2013 |
| Primed Property Investments Ltd | Real estate | 2021 |
| Primo Property Investments Ltd | Real estate | 2017 |
| Primo Property Solutions Ltd | Real estate | 2017 |
| Pro GSE Ltd | Professional & scientific | 2023 |