| New ASH Green Village Association Limited | Administrative & support | 1967 |
| New Barn Leisure Limited | Hospitality | 1980 |
| New Barn Management Company Limited | Administrative & support | 1995 |
| New Barn Solutions Limited | Professional & scientific | 2015 |
| Newbarn Carpentry & Joinery Limited | Manufacturing | 2024 |
| Newbarn Security Services Ltd | Administrative & support | 2022 |
| Newclear Construction Consultants Limited | Construction | 2014 |
| Nijjer Accountants Limited | Professional & scientific | 2021 |
| Noesis Advisory Ltd | Professional & scientific | 2016 |
| Nofaff App Ltd | Information & communication | 2025 |
| Norfolk Cumbria and Kent Properties Letting Limited | Real estate | 2021 |
| North ASH Education Consultancy Limited | Professional & scientific | 2016 |
| North Kent Solar Ltd | Construction | 2022 |
| Northgate Associates Ltd | Professional & scientific | 2000 |
| Northscale Consulting Limited | Information & communication | 2016 |
| Notrog Consulting Limited | Professional & scientific | 2025 |
| NR Building (2016) Limited | Construction | 2016 |
| NRH Electrical Limited | Construction | 2018 |
| Nsapsa Services Limited | Information & communication | 2013 |
| NT Psychology Ltd | Professional & scientific | 2025 |
| Nucleus Design LAB Ltd | Professional & scientific | 2026 |
| O G F Plumbing and GAS Ltd | Mining & quarrying | 2025 |
| O'Connell Electrics Ltd | Construction | 2017 |
| Oaks Damp Proofing Company Limited | Construction | 2007 |
| Oakwood Haulage Limited | Real estate | 1980 |
| OFL Electrical and Maintenance Services Ltd | Construction | 2021 |
| OGA Technical Limited | Information & communication | 2023 |
| Oink Oink BBQ Ltd | Hospitality | 2018 |
| OJ Creations Limited | Construction | 2026 |
| OJF Sports Business Management Ltd | Administrative & support | 2025 |
| Old Mill Consultants Ltd | Real estate | 2024 |
| Olive Lane Ltd | Wholesale & retail | 2021 |
| Oncoland Energy Limited | Energy | 2018 |
| Oncoland Limited | Agriculture & fishing | 1965 |
| Orakai Living Ltd | Real estate | 2026 |
| Orion Court, Albemarle Road (Beckenham) Flat Maintenance Limited | Households | 1973 |
| OUR MAN in the Field Ltd | Information & communication | 2018 |
| P J Baker Trading Ltd | Transport & logistics | 2025 |
| P J O'Neill Roofing Specialists Ltd | Construction | 2013 |
| P. ROE (Carpentry & Joinery) Limited | Construction | 1997 |
| PA Professional Ltd | Administrative & support | 2009 |
| Palmeprop Ltd | Real estate | 2025 |
| Panel Agency Limited | Construction | 1971 |
| Panesar & Singh Limited | Health & social care | 2008 |
| Papzs Holdings Ltd | Real estate | 2022 |
| Pariah Tales Ltd | Information & communication | 2023 |
| Parish Digital Limited | Information & communication | 2019 |
| Parish Property Holdings Limited | Households | 2025 |
| Parker and KIT Clothing Company Ltd | Wholesale & retail | 2025 |
| Parks Place Ltd | Real estate | 2025 |
| Passive Wealth Leeds Ltd | Construction | 2025 |
| PDK Transport Limited | Transport & logistics | 2004 |
| Peake Court Management Company Limited | Households | 2018 |
| Peleus Estates Limited | Construction | 2023 |
| Peleus Holdings Limited | Real estate | 2023 |
| Peleus Lettings Limited | Real estate | 2023 |
| Pentlands Residents Company Limited | Households | 1970 |
| Perez Literary & Entertainment Ltd | Information & communication | 2022 |
| Perfect 10 Nail Studio Limited | Other services | 2019 |
| Phoenix Quarter 163 Limited | Real estate | 2017 |
| Phoenix Self Store Ltd | Real estate | 2026 |
| Piccadilly Property Maintenance Ltd | Construction | 2024 |
| Piiig Productions Limited | Education | 1992 |
| Plan-B Studio Limited | Professional & scientific | 2001 |
| Please Press 1 Limited | Information & communication | 2012 |
| Plumbing Wright Services Ltd | Construction | 2023 |
| Podhale Building Construction & Garden Services Limited | Construction | 2009 |
| Pokecandy Ltd | Wholesale & retail | 2023 |
| Poolewood Machinery Limited | Wholesale & retail | 2016 |
| Positively ME Ltd | Other services | 2014 |
| Potter Flooring Limited | Construction | 2012 |
| Prestige Marquees Ltd | Other services | 2026 |
| Preston Projects Limited | Construction | 2023 |
| Primo Cars Limited | Wholesale & retail | 2020 |
| Printline Limited | Manufacturing | 1996 |
| Promed Labs Limited | Manufacturing | 2024 |
| Properties 1ST Ltd | Real estate | 2017 |
| Property and Housing Solutions Ltd | Real estate | 2019 |
| Property Discoveries Limited | Real estate | 2019 |
| Propertybytomi Ltd | Real estate | 2025 |
| PSK & SON Ltd | Manufacturing | 2026 |
| Pure Organic Health Ltd | Wholesale & retail | 2023 |
| Purple Parenting and Training CIC | Education | 2023 |
| PW Financial Planning Limited | Administrative & support | 2013 |
| Pyramid Tiling Ltd | Construction | 2024 |
| QHO Consultancy Limited | Construction | 2022 |
| Qila Investments Limited | Financial services | 2023 |
| Qila Trading Limited | Financial services | 2023 |
| QS Services South-East Limited | Professional & scientific | 2008 |
| QS4MEP Limited | Professional & scientific | 2021 |
| Qualis Properties Ltd | Real estate | 2017 |
| Quietly Glorious Limited | Manufacturing | 2025 |
| R & a Services (South East) Limited | Administrative & support | 2021 |
| R D Formwork Limited | Construction | 2022 |
| RAA4 Developments Ltd | Construction | 2018 |
| Raidbay Limited | Real estate | 2011 |
| Ralm Investments Limited | Real estate | 2024 |
| Ramazuki Ltd | Financial services | 2026 |
| Ramazuki Property Ltd | Real estate | 2023 |
| Randmore Court (Beckenham) RTM Company Limited | Households | 2010 |