| My Window Mate Limited | Wholesale & retail | 2013 |
| Myqa Ltd | Information & communication | 2015 |
| Mysolis Curation Ltd | Information & communication | 2024 |
| NAH Business Solutions Limited | Professional & scientific | 2011 |
| Nailsquad Ltd | Other services | 2025 |
| Napier Capital Limited | Real estate | 2020 |
| Native Gardens & Tree Care Ltd | Administrative & support | 2022 |
| Naturebox Limited | Arts & recreation | 2022 |
| Navith Brothers Limited | Wholesale & retail | 2020 |
| NB Holdings (U.K) Ltd | Real estate | 2025 |
| Need for Seed Limited | Professional & scientific | 2015 |
| Neil Carrington Railway Limited | Construction | 2018 |
| Neroli Vetiver Ltd | Wholesale & retail | 2025 |
| Net-Planet Management & Marketing Limited | Information & communication | 2005 |
| Neville Four Limited | Administrative & support | 2015 |
| Nextstep Connect Limited | Administrative & support | 2025 |
| Nightclub Deal Ltd | Hospitality | 2017 |
| NJE Marine Ltd | Manufacturing | 2017 |
| Nonington Commercial Ltd | Wholesale & retail | 2022 |
| North Court (1-6) Freehold Limited | Households | 2018 |
| North Court (7-16) Freehold Limited | Households | 2019 |
| Northbourne Farming Partnership LLP | | 2012 |
| Northbourne Park Enterprises Limited | Education | 2025 |
| Northbourne Park School Limited | Education | 1980 |
| Nrcn Ltd | Construction | 2026 |
| Nuglife Limited | Wholesale & retail | 2019 |
| Nunc EST Bibendum Limited | Hospitality | 2020 |
| Nursery Close (East Studdal) Management Ltd | Households | 2024 |
| Nurturing Family Connections UK Ltd | Health & social care | 2025 |
| NYE Professional Consultants Limited | Administrative & support | 2007 |
| NYS Services Ltd | Administrative & support | 2015 |
| Oakes Abode Ltd | Real estate | 2017 |
| Oaklea Properties Ltd | Real estate | 2025 |
| Oast House Media Ltd | Information & communication | 2000 |
| Oatridge Investments Ltd | Transport & logistics | 2019 |
| October House Records Limited | Information & communication | 2021 |
| Omni Co. (Assets) Ltd | Real estate | 2026 |
| Omni Co. (Trading) Ltd | Manufacturing | 2025 |
| ON Electrical Kent Ltd | Construction | 2011 |
| One Recruitment (Canterbury) Limited | Administrative & support | 2017 |
| Onsite Building Materials Ltd | Wholesale & retail | 2026 |
| Optume Consulting Limited | Administrative & support | 2009 |
| Opulence Stone Limited | Manufacturing | 2019 |
| Orange Peel Bars and Events Limited | Hospitality | 2021 |
| Orange Peel UK Group Limited | Professional & scientific | 2020 |
| Orchard Mews Residents Association Limited | Households | 1995 |
| Orchid Sign Co Ltd | Professional & scientific | 2021 |
| Ordnance Precision Ltd | Construction | 2021 |
| Orford House Management Company Limited | Households | 2008 |
| Organic ME Limited | Wholesale & retail | 2025 |
| Orthopet Pro Ltd | Professional & scientific | 2024 |
| Osbour Ltd | Water & waste | 2020 |
| Osmium Studios Ltd | Information & communication | 2026 |
| Outdowns Management Company Limited | Households | 2011 |
| Ovidius Medical Ltd | Health & social care | 2016 |
| Ovidius Solutions Ltd | Wholesale & retail | 2018 |
| P B Clinical Services Limited | Professional & scientific | 2009 |
| P Sparks Limited | Wholesale & retail | 2011 |
| P3DANCEACADEMY Ltd | Education | 2021 |
| Pack Mule Ltd | Information & communication | 2016 |
| Packwood Kerr Ltd | Professional & scientific | 2023 |
| Page Property Limited | Households | 2017 |
| Paint Topper Ltd | Manufacturing | 2019 |
| Papaya Software Ltd | Information & communication | 2016 |
| Paravel Enterprises Limited | Professional & scientific | 2025 |
| Pardot Consulting Limited | Information & communication | 2019 |
| Park & Bridge Limited | Wholesale & retail | 2012 |
| Park Road Developments (Hythe) Limited | Real estate | 2017 |
| Park Road Developments 2 Limited | Real estate | 2019 |
| Park Road Developments 3 Limited | Real estate | 2019 |
| Parkcyclesdeal Ltd | Wholesale & retail | 2025 |
| PAT Service Ltd | Administrative & support | 2006 |
| Paul Coleman Ltd | Professional & scientific | 2023 |
| Paul Craven Partners Ltd. | Other services | 2014 |
| Paul Theo Architects Ltd | Professional & scientific | 2017 |
| Paul Wills Design Ltd | Professional & scientific | 2023 |
| Pavilion Projects Limited | Information & communication | 2016 |
| Pawcentric Pathways Ltd | Other services | 2024 |
| Pawfest Ltd | Other services | 2020 |
| PAX Engineering Solutions Limited | Manufacturing | 2012 |
| PDS Construction Management Ltd | Construction | 2019 |
| Pearson-Wood Farms | | 2002 |
| Pegasus Health and Safety Solutions Ltd | Professional & scientific | 2025 |
| Pegasus Safety Solutions Ltd | Professional & scientific | 2025 |
| Pegglo Limited | Construction | 2022 |
| Pemberton & Nicole FX Ltd | Financial services | 2023 |
| Pemberton & Nicole Limited | Professional & scientific | 2017 |
| Pemberton Construction Ltd | Construction | 2020 |
| Pemberton Design Ltd | Professional & scientific | 2023 |
| Pemberton Estates Residential Ltd | Construction | 2020 |
| Pemberton Timber Frame Ltd | Manufacturing | 2021 |
| Pemberton Works Ltd | Construction | 2025 |
| Pembertons (South-East) Limited | Professional & scientific | 2002 |
| Penao Ltd | Real estate | 2025 |
| Penny Events Co Ltd | Administrative & support | 2021 |
| Penrose Management Company Limited | Real estate | 1988 |
| Perceptronic AI Ltd | Information & communication | 2025 |
| Perez Ashbridge Consultants Ltd | Health & social care | 2020 |
| Petes Consulting Ltd | Professional & scientific | 2022 |
| Phillips Pharma Consultancy Ltd | Professional & scientific | 2014 |