| Northvale South Ltd | Professional & scientific | 2026 |
| Norton HOP Unit Limited | Real estate | 2017 |
| Nortrad Auctions Ltd | Wholesale & retail | 2021 |
| Norwich Green Energy Limited | Energy | 2021 |
| Nouc Ltd | Health & social care | 2023 |
| NS Khongrat Company Limited | Hospitality | 2025 |
| NUA Wellness Studio Ltd | Arts & recreation | 2025 |
| Number 24 Ltd | Wholesale & retail | 2025 |
| Number 77 Ltd | Wholesale & retail | 2020 |
| Nurture for ALL CIC | Education | 2022 |
| O T Drilling Ltd | Construction | 2007 |
| Oak Mews (Horselees) Management Company Limited | Households | 2021 |
| Oakford Farming Limited | Real estate | 2012 |
| Oakleigh Manor Group Limited | Administrative & support | 2013 |
| Oast Farm Investments Limited | Construction | 2025 |
| Obbi Ltd | Real estate | 2025 |
| Ocean Cables Limited | Agriculture & fishing | 2003 |
| Oceanview Estates Limited | Hospitality | 1987 |
| Offerprime Limited | Real estate | 1989 |
| Offton Energy Meadows Ltd | Energy | 2025 |
| Okaunt (OKA) Ltd | Hospitality | 2017 |
| Old Downs Farm Limited | Agriculture & fishing | 2011 |
| Old Hanson Brickworks Ltd | Construction | 2022 |
| Old Rides Solar Ltd | Energy | 2012 |
| Olive Tree Joinery Ltd | Manufacturing | 2023 |
| Olivia Webb Marketing Ltd | Professional & scientific | 2024 |
| Omhs Contracts Limited | Administrative & support | 2011 |
| Omni Consulting Services Ltd | Information & communication | 2023 |
| Omniventure Consulting Ltd | Information & communication | 2013 |
| ON the Road Rentals Ltd | Administrative & support | 2026 |
| One World Cyber Security Ltd | Information & communication | 2025 |
| Onion Partners Ltd | Real estate | 2026 |
| Onubafruit UK Limited | Agriculture & fishing | 2019 |
| Open Arms Care Limited | Health & social care | 2020 |
| Optichip Solutions Ltd | Professional & scientific | 2026 |
| Optimising Ltd | Professional & scientific | 2024 |
| Orchard Gate Consulting & Digital Ltd | Professional & scientific | 2025 |
| Orchard Gate Faversham Limited | Real estate | 2014 |
| Orchard Management Solutions Limited | Administrative & support | 2014 |
| Orchard Walk Management Company Limited | Households | 2019 |
| ORIGINAT3 Ltd | Information & communication | 2026 |
| Ormiston Stone Ltd | Manufacturing | 2018 |
| ORO Verde Ltd | Wholesale & retail | 2025 |
| Oscar Miles Garden Design and Services Ltd | Professional & scientific | 2024 |
| Ospringe Place Residents Society Limited | Households | 1981 |
| Ospringe Street Residents RTM Company Limited | Real estate | 2009 |
| Ossdsign Ltd | Administrative & support | 2017 |
| Ossies Faversham Ltd | Hospitality | 2025 |
| Ossies Fish Bar Limited | Hospitality | 2002 |
| Ostier Limited | Hospitality | 2025 |
| Otherwise Creative Limited | Professional & scientific | 2024 |
| Otobo Decorations Limited | Construction | 2022 |
| Otsolutionsao Ltd | Health & social care | 2021 |
| Ours Cafe Ltd | Hospitality | 2025 |
| Outstanding Properties Limited | Real estate | 1963 |
| Ovenden Tipper Services Limited | Transport & logistics | 1974 |
| Owen Hayward Smith Ltd | Construction | 2023 |
| Oxford West Energy Reserve Ltd | Energy | 2024 |
| P H R Farms Limited | Agriculture & fishing | 2010 |
| P H R Milking Limited | Agriculture & fishing | 2012 |
| P J Ellis Services Limited | Professional & scientific | 2020 |
| P W D L Limited | Health & social care | 2009 |
| P&L TBC Ltd | Real estate | 2024 |
| P&O Property Invest Ltd | Real estate | 2022 |
| P.J. Wright Construction Limited | Construction | 2013 |
| P.R.G. Swayne Limited | Agriculture & fishing | 2005 |
| Packer C Limited | Wholesale & retail | 2023 |
| Padel Folks Ltd | Arts & recreation | 2025 |
| Padel MX Ltd | Wholesale & retail | 2025 |
| PAH Estates Ltd | Real estate | 2024 |
| Palin Consultants Ltd | Professional & scientific | 2018 |
| Pando Group Holdings Ltd | Financial services | 2022 |
| Pando REH Ltd | Construction | 2025 |
| Pando Renewables Ltd | Energy | 2022 |
| Pandowood Development Limited | Construction | 2015 |
| Paralian Properties Ltd | Real estate | 2021 |
| Park Farm Kent Limited | Agriculture & fishing | 2020 |
| Parrypage Joinery Ltd | Manufacturing | 2021 |
| Pass Code Ltd | Information & communication | 2012 |
| Paul Curling Construction Limited | Construction | 2024 |
| Paul Mcleod Trading Ltd | Professional & scientific | 2024 |
| Paul Roberts Development (Hall Place) Holdings Limited | Construction | 2021 |
| Paul Roberts Development (Hall Place) Limited | Construction | 2021 |
| Paul Roberts Development (Rosemary Lane) Limited | Construction | 2021 |
| Paul Roberts Development (ST Peters One) Limited | Construction | 2021 |
| Paul Roberts Development (ST Peters Three) Limited | Construction | 2021 |
| Paul Roberts Development (ST Peters Two) Limited | Construction | 2021 |
| Paul Roberts Development (ST Peters) Limited | Construction | 2016 |
| Paul Roberts Development (Wincheap) Limited | Construction | 2022 |
| Paul Roberts Management (ST Peters) Limited | Construction | 2021 |
| Paul Westrup Designer and Maker Ltd | Arts & recreation | 2022 |
| Pave Consult Ltd | Professional & scientific | 2020 |
| PB Farming | Agriculture & fishing | 2020 |
| PB Property Management Limited | Real estate | 2025 |
| Pcas Kent Ltd | Administrative & support | 2017 |
| PCX Consulting Ltd | Professional & scientific | 2025 |
| PDH Corporate Limited | Administrative & support | 2022 |
| Pear Tree Web Limited | Professional & scientific | 2016 |
| Peasmarsh Place (Country Care) Limited | Other services | 1984 |
| Peguerine XIV Property Ltd | Real estate | 2026 |