| Orbital Sound Limited | Information & communication | 1993 |
| Orca Law Limited | Education | 2014 |
| Orchid Project Management Limited | Professional & scientific | 2019 |
| ORF Integration. Limited | Information & communication | 2018 |
| Oriental & African Strategic Consultancy Limited | Professional & scientific | 2020 |
| Oriental & African Strategic Investments Limited | Financial services | 2020 |
| Origami Frog Limited | Construction | 2009 |
| Ormside Road Management Company Limited | Households | 2017 |
| Orpwood Security Ltd | Administrative & support | 2025 |
| Orratay Solutions Ltd | Professional & scientific | 2015 |
| Orson Associates Ltd | Professional & scientific | 2020 |
| Orsus Ventures Limited | Information & communication | 2019 |
| Orvato Healthcare Limited | Extraterritorial | 2020 |
| Orvato Limited | Extraterritorial | 2018 |
| Osborne Education Limited | Education | 2013 |
| Oscar Oliver Ltd | Wholesale & retail | 2026 |
| Osco Jewellery Limited | Wholesale & retail | 2026 |
| Osco London Ltd | Other services | 2022 |
| Ostrowski Investments Limited | Real estate | 2023 |
| Otford Antique Centre Ltd | Wholesale & retail | 2024 |
| Otford Builders Merchants Limited | Wholesale & retail | 1971 |
| Otford Developments Ltd | Construction | 2025 |
| Otford DRY Cleaners Ltd | Other services | 2023 |
| Otford Electrical Limited | Construction | 1998 |
| Otford Interiors Limited | Other services | 2022 |
| Oubetni Flooring Ltd | Construction | 2020 |
| Oughton Partners Ltd | Administrative & support | 2023 |
| OUR Tribe Limited | Administrative & support | 2020 |
| Outsourced Back Office Management Ltd | Administrative & support | 2022 |
| Ouyue Limited | Hospitality | 2018 |
| Oven Legends Ltd | Administrative & support | 2019 |
| Overseas Transportation & Shipping LLP | | 2008 |
| Ozanne Consulting Ltd | Professional & scientific | 2026 |
| Ozbury Limited | Administrative & support | 2016 |
| P & S Goodworth Limited | Real estate | 1991 |
| P a Surridge Ltd | Professional & scientific | 2021 |
| P G Critchley Limited | Professional & scientific | 2025 |
| P R E Services Limited | Other services | 2002 |
| P S Bookkeeping Ltd | Professional & scientific | 2024 |
| P2 (Kent) Ltd | Construction | 2018 |
| Pace Accident Repair Centre Limited | Wholesale & retail | 2012 |
| Pacific Trade Connect Ltd | Wholesale & retail | 2024 |
| Package & Ship Ltd | Wholesale & retail | 2025 |
| Packhorse Services Ltd | Professional & scientific | 2023 |
| Packstone Lake Consulting Ltd | Professional & scientific | 2017 |
| Paddock Gardens (Crouch) Management Company Limited | Households | 2017 |
| Paddocks Residents Association Limited(The) | Households | 1984 |
| Paediatric Oncology Consultancy Limited | Health & social care | 2019 |
| Paint Like Jake Ltd | Construction | 2023 |
| Palace Antiques Otford Ltd | Wholesale & retail | 2024 |
| Palatine Advisors Limited | Manufacturing | 2013 |
| Palazzo Estates Limited | Real estate | 2023 |
| Palm Solutions Ltd | Wholesale & retail | 2017 |
| Palmer Golf Company Limited | Arts & recreation | 2006 |
| Palmer Rail Testing Ltd | Professional & scientific | 2019 |
| Pamoja Growth Partners Ltd | Wholesale & retail | 2025 |
| PAN Asia Services Ltd | Professional & scientific | 2022 |
| PAN European Professional Real Estate Developers Ltd. | Financial services | 1994 |
| Panda Code Ltd | Information & communication | 2021 |
| Panda Retail Group Ltd | Wholesale & retail | 2024 |
| Pangea Botanica Ltd | Professional & scientific | 2021 |
| Pantera Autocentres Ltd | Wholesale & retail | 2025 |
| Panther Sports Enterprises Co LLP | | 2015 |
| Pantry ME Ltd | Manufacturing | 2023 |
| Paper Masons Ltd | Wholesale & retail | 2025 |
| Paperhouse Music LLP | | 2010 |
| Papermakers Trading Company Ltd | Hospitality | 2024 |
| Paradise Plumbing Ltd | Construction | 2018 |
| Paragon Installations Limited | Professional & scientific | 2010 |
| Parc Recruitment Ltd | Administrative & support | 2024 |
| Parcadian Limited | Professional & scientific | 2015 |
| Park Farm Stables Limited | Agriculture & fishing | 2011 |
| Park Lane (Kemsing) Limited | Real estate | 2016 |
| Parker Commercial Limited | Wholesale & retail | 2009 |
| Parkside (Sevenoaks) Limited | Construction | 2016 |
| Parkstone Property Solutions Limited | Real estate | 2006 |
| Parkview Management (Croydon) Limited | Households | 1984 |
| Parkview Vehicle Solutions Limited | Wholesale & retail | 2004 |
| Parr Car Sales Limited | Administrative & support | 2007 |
| Parr Motorsport Limited | Wholesale & retail | 1997 |
| Parr Specialists in Porsche Limited | Extraterritorial | 2007 |
| Parrett Consulting Ltd | Financial services | 2025 |
| Parsley Spa Ltd | Health & social care | 2025 |
| Partnerpro Limited | Other services | 2024 |
| Partners in Leadership Limited | Professional & scientific | 2025 |
| Partneryn Ltd | Information & communication | 2026 |
| Party and Carnival Warehouse Limited | Wholesale & retail | 1998 |
| Pascoe & Associates Limited | Transport & logistics | 1998 |
| Pasion Limited | Professional & scientific | 2021 |
| Pasta Verdi Limited | Manufacturing | 2000 |
| Pastiche Bags Ltd | Wholesale & retail | 2021 |
| Pasture-Fed Livestock Association CIC | Agriculture & fishing | 2011 |
| Patrick Athill Ltd | Wholesale & retail | 2019 |
| Patrick's Day Films Limited | Information & communication | 2013 |
| Patterson Actuarial Limited | Administrative & support | 2006 |
| Paul Clark Trustee Limited | Professional & scientific | 2022 |
| Paul Davis Associates Ltd | Professional & scientific | 2011 |
| Paul Hambilton Investment LLP | | 2010 |
| Paul Lawrence Electrical Limited | Construction | 2006 |
| Paul M Ltd | Information & communication | 2013 |