| Myspace Self Storage Limited | Transport & logistics | 2014 |
| N E Properties (South East) LLP | | 2013 |
| N S B Casements Limited | Manufacturing | 1994 |
| NAG Recruitment Limited | Administrative & support | 2020 |
| Nagel Flowers Ltd | Wholesale & retail | 2020 |
| NAJ Food's Ltd | Hospitality | 2026 |
| Naqua Ltd | Professional & scientific | 2016 |
| Naqua Midco Ltd | Financial services | 2026 |
| Nature TTL Ltd. | Information & communication | 2021 |
| Nature TTL Travel Ltd | Professional & scientific | 2018 |
| NBS Kent Ltd | Wholesale & retail | 2012 |
| NDR IT Ltd | Information & communication | 2011 |
| Nebula Rentals Ltd | Administrative & support | 2025 |
| Nestlings Nook Ltd | Real estate | 2025 |
| Neurobody Therapeutics Ltd | Health & social care | 2025 |
| New Century Nursery Limited | Education | 2005 |
| Newman Installations Limited | Construction | 2014 |
| Newms Property Services Ltd | Real estate | 2016 |
| Newms Services Limited | Professional & scientific | 2004 |
| Nick Cunningham Plumbing & Heating Ltd | Construction | 2019 |
| Nigel D Hughes Limited | Administrative & support | 2018 |
| Nine ASH Electrical Limited | Extraterritorial | 2007 |
| NJP Estates Developments Limited | Construction | 2022 |
| NJP Estates Ltd | Construction | 2014 |
| NLG Consultancy Limited | Professional & scientific | 2019 |
| NN Consultants Ltd | Professional & scientific | 2026 |
| NO Fluff Ltd | Administrative & support | 2017 |
| Nordsys Ltd | Manufacturing | 2020 |
| Northbourne Engineering (NEL) Limited | Manufacturing | 2017 |
| Nowyoyo Limited | Information & communication | 2014 |
| Nseah Limited | Professional & scientific | 2020 |
| Nurture Growth Ltd | Extraterritorial | 2024 |
| Oakwood Consultants Limited | Professional & scientific | 2022 |
| Oasis Swimming Pools (Kent) Limited | Construction | 2012 |
| Obsidiana Digital Ltd | Wholesale & retail | 2025 |
| OD Consultancy Limited | Information & communication | 1997 |
| OGS GAS and Heating Ltd | Construction | 2026 |
| ON CUE Removals Ltd | Transport & logistics | 2024 |
| One Call GAS Services Limited | Construction | 2014 |
| ONE2ONE Financial Advice Limited | Financial services | 2010 |
| Opes Distribution Ltd | Financial services | 2017 |
| Optimus Choice Limited | Administrative & support | 2023 |
| ORA Wholesale Ltd | Wholesale & retail | 2022 |
| Orchid Nails Sandwich Ltd | Other services | 2025 |
| Ossies Cattle Market Ltd | Hospitality | 2021 |
| Ottimo Pharma Limited | Professional & scientific | 2017 |
| OUR Social Connection CIC | Health & social care | 2025 |
| Ovenden Allworks Construction Limited | Construction | 2024 |
| P and C Utilities Limited | Construction | 2017 |
| P B Nursery Limited | Education | 2017 |
| P N Surveys Limited | Professional & scientific | 2007 |
| P.A. Hollingworth and Co. Limited | Construction | 1996 |
| PA Hollingworth & Co (Holdings) Limited | Financial services | 2026 |
| Pace Foundation CIC | Arts & recreation | 2008 |
| Pace Soccer Schools Limited | Education | 2011 |
| Partenopei (Broadstairs) Ltd | Hospitality | 2024 |
| Particology Ltd | Professional & scientific | 2024 |
| Patton Consultants Ltd | Health & social care | 2016 |
| Paul Terry Joinery Limited | Construction | 2013 |
| Paysafe Services Ltd | Administrative & support | 2015 |
| Peak Housing Association Limited | Real estate | 2021 |
| Peaky Entertainment Limited | Information & communication | 2026 |
| Peirce Property Limited | Real estate | 2020 |
| Perfect Fibre Limited | Information & communication | 2024 |
| Peter J D Evans Medical Ltd | Health & social care | 2011 |
| Pfizer Consumer Healthcare | Wholesale & retail | 1913 |
| Pfizer R&D UK Limited | Professional & scientific | 2018 |
| Pharmacia Limited | Professional & scientific | 1952 |
| Pheon Therapeutics Ltd | Professional & scientific | 2015 |
| Physique Focus Ltd | Other services | 2025 |
| Piers James Ltd | Professional & scientific | 2016 |
| PINKH2 Maritime Ltd | Professional & scientific | 2021 |
| Pinnacle Plastering Contractors Ltd | Construction | 2014 |
| Pinnacle Stonemasons Ltd | Manufacturing | 2016 |
| Pither Productions Ltd | Arts & recreation | 2022 |
| PL Coaching Limited | Administrative & support | 2003 |
| Play Padel Club Ltd | Wholesale & retail | 2023 |
| Popplett Taylor Consulting Ltd | Professional & scientific | 2023 |
| Poppydog Limited | Arts & recreation | 2004 |
| Porter-Wedl Ltd. | Hospitality | 1988 |
| Porto Reale Ltd | Hospitality | 2018 |
| Postmill Services Limited | Real estate | 1997 |
| PPR Enterprises LLP | | 2023 |
| Practical Car and Van Hire ( Thanet) Limited | Administrative & support | 2025 |
| Predisep Ltd | Extraterritorial | 2022 |
| Premier Advice Club Ltd | Administrative & support | 2007 |
| Premiere Care (Southern) Limited | Health & social care | 1995 |
| Premiere Care Holdings Limited | Financial services | 1962 |
| Prestige Rail Consultants Ltd | Administrative & support | 2011 |
| Pristine Wood Finishing Limited | Other services | 2013 |
| Prodelex Limited | Professional & scientific | 2020 |
| Production Farm Ltd | Administrative & support | 2026 |
| Progressive (UK) Limited | Administrative & support | 2007 |
| PSC Group Ltd | Real estate | 2025 |
| Public Liability Live Check Ltd | Information & communication | 2025 |
| Puma Generator Service Limited | Administrative & support | 2016 |
| Puma Power Projects Limited | Administrative & support | 2005 |
| Purobien Lifesciences PVT Ltd | Wholesale & retail | 2019 |
| Purple Flower Ltd | Hospitality | 2026 |
| PZR Property Limited | Financial services | 2010 |