| Necesse Technical Services Ltd | Information & communication | 2020 |
| Netinstall Ltd | Professional & scientific | 2011 |
| New Century (Bagshot) Ltd | Hospitality | 2025 |
| New Century (Surrey) Ltd | Extraterritorial | 2023 |
| New Homes (Mays) Limited | Professional & scientific | 2011 |
| New Image Design & Build Ltd | Construction | 2024 |
| Newbury Care Home Limited | Health & social care | 2025 |
| Nexatech IT Solutions Limited | Information & communication | 2025 |
| Nexstor Trading Limited | Wholesale & retail | 2011 |
| Ngill Consultancy Ltd | Health & social care | 2022 |
| Nhrh Limited | Health & social care | 2018 |
| NKM Financial Ltd | Professional & scientific | 2013 |
| Nmpb Ltd | Professional & scientific | 2017 |
| Norman Herridge Limited | Professional & scientific | 2001 |
| North Stifford Care Home Limited | Real estate | 2024 |
| Nova Source Technologies Limited | Administrative & support | 2012 |
| Novaes-Norman Property Investments Limited | Financial services | 2024 |
| Number Fifty Three Limited | Financial services | 2013 |
| O.C.M&E Ltd | Other services | 2026 |
| Oak Lodge Canine Retreats Ltd | Other services | 2026 |
| Oakmont Contracting Ltd | Construction | 2024 |
| Oakmont Futures Ltd | Construction | 2025 |
| Oakmont Group Holdings Ltd | Construction | 2025 |
| Obsw Ltd | Real estate | 2018 |
| Odyssey Futures Ltd | Professional & scientific | 2023 |
| Ohmic Electrical Services Limited | Construction | 2003 |
| OHW Holdings Ltd | Financial services | 2024 |
| Olibeth Development Ltd | Professional & scientific | 2022 |
| Oliphant Travels Limited | Administrative & support | 2023 |
| OM Barker Builders Ltd | Construction | 2018 |
| Onetouchservices Ltd | Information & communication | 2014 |
| ONLINE365 Limited | Wholesale & retail | 2014 |
| Opio Designs Limited | Professional & scientific | 2024 |
| OTO Properties Limited | Real estate | 2014 |
| OUTDOOR365 Limited | Wholesale & retail | 2008 |
| Outperform Invest Limited | Professional & scientific | 2017 |
| Outstanding Credit Ltd | Administrative & support | 2019 |
| P and Q Electric Ltd | Construction | 2018 |
| P and S Heating Ltd | Other services | 2026 |
| P&H Food & Wine Limited | Wholesale & retail | 2018 |
| Palace Motors Limited | Wholesale & retail | 2000 |
| Paloma Beach Limited | Real estate | 2018 |
| PAM Trading Limited | Transport & logistics | 2016 |
| Patten Ltd | Professional & scientific | 2020 |
| PAY Guardians Limited | Professional & scientific | 2023 |
| PC Tutorials Limited | Information & communication | 2011 |
| Pearlydent-Uk Ltd | Professional & scientific | 2023 |
| Penny Hill Motor Spa Ltd | Other services | 2020 |
| Penny Hill Motors Ltd | Wholesale & retail | 2021 |
| Pennyhill Park Limited | Hospitality | 1982 |
| Perfect FD Limited | Professional & scientific | 2026 |
| Periodic Limited | Health & social care | 2024 |
| Physica Health Ltd | Other services | 2019 |
| Ping Accounting Ltd | Professional & scientific | 2017 |
| PIX8 Ltd | Information & communication | 2012 |
| Pixiebuild Properties Limited | Construction | 1997 |
| PJ Repairs Ltd | Manufacturing | 2024 |
| PJB Plastering Limited | Construction | 2011 |
| Plastercraft (Berkshire) Limited | Arts & recreation | 2017 |
| Playhousedrycleaning Ltd | Other services | 2021 |
| PMK Maintenance Limited | Construction | 2015 |
| Pmnjic Properties Limited | Real estate | 2004 |
| Pooling Better Resources Ltd | Professional & scientific | 2017 |
| Post House Mews Residents Association Limited | Households | 2019 |
| Power and Quality Ltd | Construction | 2018 |
| Power Scooter Motorcycle Ltd | Wholesale & retail | 2025 |
| Power Tribe Athletics Ltd | Education | 2024 |
| Precious Metal Coin Company Limited | Construction | 1974 |
| Precision Core Mechanical Ltd | Construction | 2026 |
| Precision Plumbing & Air Conditioning Ltd | Construction | 2023 |
| Precision Technical Engineering Ltd | Construction | 2019 |
| Precision Tiling and Bathrooms Ltd | Construction | 2016 |
| Premier League Consulting Limited | Administrative & support | 2001 |
| Prestige Surface Care Ltd | Administrative & support | 2026 |
| Price PDR Limited | Wholesale & retail | 2024 |
| Price Real Estate Ltd | Real estate | 2020 |
| Primalvit Ltd | Wholesale & retail | 2017 |
| Prime Accountancy Limited | Professional & scientific | 2015 |
| Primrose Community Care Homes Ltd | Health & social care | 2012 |
| Principal Chairs Ltd | Education | 2012 |
| Pristine Valeting Centre Bagshot Ltd | Administrative & support | 2025 |
| Property Southern Limited | Professional & scientific | 1988 |
| Property Yorkshire Limited | Professional & scientific | 1984 |
| Proshine Solutions Limited | Administrative & support | 2022 |
| Protech Engineers Ltd | Manufacturing | 2026 |
| Prunus Treecare and Landscape Services Ltd | Administrative & support | 2018 |
| Publish U Ltd | Information & communication | 2022 |
| Pure Rebel Crystals Limited | Other services | 2021 |
| Purposeground Property Management Limited | Professional & scientific | 1997 |
| Put-It-Right.Com Ltd | Other services | 2021 |
| PYE Property Limited | Hospitality | 2014 |
| Qosmetic Limited | Health & social care | 2014 |
| Quantum Particle Trading Limited | Hospitality | 2020 |
| Quickstore Storage Limited | Real estate | 2002 |
| R H R L M Ltd | Professional & scientific | 2012 |
| R&A Construction Ltd | Construction | 2021 |
| Radius Brand Consultants Limited | Professional & scientific | 2009 |
| Rado Services Ltd | Transport & logistics | 2020 |
| Raedam Limited | Information & communication | 2020 |
| RAM Tech Systems Ltd | Information & communication | 2026 |