| Novasel Limited | Administrative & support | 2009 |
| NPV Rentals Ltd | Real estate | 2025 |
| NV Blinds Limited | Administrative & support | 2009 |
| Oakbrook Lodge Management Company Limited | Households | 2003 |
| Oakleaf Cleaning Services Limited | Administrative & support | 2012 |
| OBA07 Limited | Construction | 2025 |
| Obpm Limited | Wholesale & retail | 2003 |
| OC Refined Limited | Wholesale & retail | 2024 |
| OC Studios Ltd | Information & communication | 2023 |
| Occor Limited | Information & communication | 2025 |
| ODD Tales Ltd | Information & communication | 2015 |
| OG Property Ltd | Real estate | 2020 |
| OLH Property Group Limited | Real estate | 2024 |
| Ollie Jeffery Event Production Limited | Administrative & support | 2024 |
| Omni RF Ltd | Manufacturing | 2024 |
| One Eldon Place L E Company Limited | Real estate | 2007 |
| Operations Projects Delivery Limited | Information & communication | 2001 |
| Opportunity Learning Academy Limited | Education | 2021 |
| Optimum Data Cooling Limited | Manufacturing | 2017 |
| Orchard Financial Holdings Limited | Financial services | 2020 |
| Orchard Financial Management Limited | Financial services | 2003 |
| Orchard Psychological Services Limited | Health & social care | 2025 |
| Orchard Services & Associates Limited | Construction | 2014 |
| Origami Panda Studio Ltd | Information & communication | 2019 |
| Oscar Corp Ltd | Other services | 2020 |
| Osuna Education Limited | Education | 2025 |
| Ottimo Business Growth Limited | Professional & scientific | 2018 |
| OUR Palace Ltd | Real estate | 2022 |
| Outline Creative Ltd | Information & communication | 2020 |
| Outsider (UK) Ltd | Wholesale & retail | 2014 |
| Owlskip Games Limited | Information & communication | 2023 |
| Oxton Freight Solution Ltd | Transport & logistics | 2021 |
| P Holt Investments Limited | Wholesale & retail | 2022 |
| P.C.Atack Ltd | Information & communication | 2025 |
| Pagey Properties Ltd | Real estate | 2025 |
| Pairr Ltd | Information & communication | 2023 |
| Pais Ltd | Real estate | 2019 |
| Palm Bay Windows & Doors Ltd | Construction | 2016 |
| Palmer Consultancy Ltd | Professional & scientific | 2008 |
| Palmer Family Estate LLP | | 2019 |
| Palmer Marketing Ltd | Information & communication | 2014 |
| Pamphilon Ventures Ltd | Professional & scientific | 2020 |
| Panel Nine Limited | Information & communication | 2013 |
| Panorama Court Limited | Households | 1992 |
| Papa Bear Skin Ltd | Manufacturing | 2025 |
| Paper RAY Studio Ltd | Professional & scientific | 2025 |
| PAR Three Limited | Hospitality | 2013 |
| Park Home Finance Group Limited | Financial services | 2019 |
| Parkers Associates Limited | Administrative & support | 2010 |
| Parkstunts Limited | Information & communication | 2025 |
| Passivhaus Contracts Ltd | Construction | 2020 |
| Pathway Holiday Cottages Ltd | Hospitality | 2017 |
| Pathways Properties Limited | Real estate | 2023 |
| Paul Greenleaf Ltd | Professional & scientific | 2007 |
| Paul Oliver Electrical Ltd | Construction | 2014 |
| Paul Smith Marketing Limited | Administrative & support | 1994 |
| Pawn IT Ltd | Financial services | 2013 |
| PC Sales & Investments Limited | Manufacturing | 2011 |
| PDH Financial Services Ltd | Financial services | 2024 |
| Peony Estate Limited | Real estate | 2025 |
| People Day Limited | Information & communication | 2017 |
| Pepper Don'T Take NO Mess Productions Limited | Administrative & support | 2016 |
| Perfect Pitch Consulting Ltd | Professional & scientific | 2012 |
| Pestraid Limited | Administrative & support | 2015 |
| Pet Travel Kent Ltd | Transport & logistics | 2025 |
| Pettman Mews Management Limited | Households | 1998 |
| PG Styling Limited | Information & communication | 2024 |
| Pgdesignco Ltd | Other services | 2024 |
| Phase Drive Media Limited | Information & communication | 2018 |
| Phases Dance and Fitness Studio LLP | | 2025 |
| Phoenix Care Homes Limited | Health & social care | 2001 |
| Phoenix FAB (East Kent) Ltd | Manufacturing | 2022 |
| Phuse Limited | Other services | 2005 |
| PHYSIOTHERAPY4U (Broadstairs) Ltd | Health & social care | 2011 |
| Piermont Property Ltd | Information & communication | 2024 |
| Pierremonts Limited | Wholesale & retail | 1997 |
| Pigment Print Ltd | Manufacturing | 2023 |
| Pillbug Studios Limited | Information & communication | 2024 |
| Pinford END Holiday Cottages LLP | | 2014 |
| Piper Home Improvements Limited | Administrative & support | 2009 |
| Piper Wealth Management Limited | Financial services | 2020 |
| Pipkin Limited | Construction | 2008 |
| Pitcher Build Carpentry Ltd | Construction | 2025 |
| Pitfield RTM Company Limited | Households | 2021 |
| Pittlands Lakes LLP | | 2022 |
| PJ Perfection Limited | Wholesale & retail | 2025 |
| PJB Rail Ltd | Construction | 2025 |
| PJS Construction (Kent) Ltd | Construction | 2011 |
| Planet Confectionery Ltd | Wholesale & retail | 2012 |
| PLANET73 Limited | Professional & scientific | 2018 |
| Please SIR Holdings Limited | Hospitality | 2022 |
| Please SIR Ltd | Hospitality | 2020 |
| Plkproperty Ltd | Real estate | 2021 |
| PMC Consulting Services Limited | Professional & scientific | 2021 |
| POC in Play CIC | Health & social care | 2019 |
| Polynomial Ltd | Information & communication | 2023 |
| Porcellana Ceramics Limited | Extraterritorial | 2023 |
| Porterfield Property Consultants Ltd | Construction | 2005 |
| Porton Capital Investors Action Group Limited | Health & social care | 2015 |
| Posillipo at Acqua Limited | Hospitality | 2010 |