| Owen Hearing Care Limited | Wholesale & retail | 2013 |
| Oztekin Ltd | Hospitality | 2025 |
| P&K Design Construction Limited | Construction | 2025 |
| P&L Consulting Limited | Professional & scientific | 2025 |
| P. Simpkin Dental Laboratories Limited | Extraterritorial | 2014 |
| Packham Power Auto Electrics Ltd | Construction | 2026 |
| Paddle Paws Hydrotherapy Limited | Professional & scientific | 2016 |
| Paella for YOU London Ltd | Hospitality | 2026 |
| PAG Lighting Controls Ltd | Construction | 2026 |
| PAJ Property Group Ltd | Real estate | 2024 |
| Palmm Tree Limited | Hospitality | 2025 |
| Papilio Digital Ltd | Professional & scientific | 2021 |
| Papillon Abeille Ltd | Real estate | 2023 |
| Paradoxa Ltd | Wholesale & retail | 2023 |
| Parallax Laser Design Ltd | Professional & scientific | 2018 |
| Param Consultants(Uk) Limited | Information & communication | 2007 |
| Param Investments (UK) Limited | Real estate | 2021 |
| Parkin's Properties Ltd | Real estate | 2020 |
| Partners in Grime (Cleaning) Limited | Administrative & support | 2001 |
| Partners Property and Development Ltd | Real estate | 2024 |
| Parumi Ltd | Real estate | 2016 |
| Pathlight Consulting Ltd | Information & communication | 1992 |
| Paul Kemp Ltd | Professional & scientific | 2020 |
| Paul's Creative Ltd | Construction | 2025 |
| Pavlou Homes Limited | Real estate | 2021 |
| Payment Matters Ltd | Professional & scientific | 2020 |
| Peaches Properties Ltd | Real estate | 2019 |
| Pear Tree Properties (Kent) Ltd | Real estate | 2023 |
| Pearce Boilers and Bathrooms Limited | Construction | 2013 |
| Periplot Limited | Construction | 1988 |
| Pernikkity Limited | Administrative & support | 2011 |
| Peter Neal Pensions LLP | | 2003 |
| Phoenix Forge AI Ltd | Information & communication | 2025 |
| Piercy & Faulkner Ltd | Education | 2024 |
| Pikkles Play Ltd | Wholesale & retail | 2025 |
| Pillar Services Ltd | Professional & scientific | 2025 |
| Pilot Plus Limited | Professional & scientific | 2011 |
| PIN Sharp Hearing Limited | Wholesale & retail | 2025 |
| Pines (Orpington) Management Limited | Households | 2001 |
| Pink Martini Boutiques Ltd | Wholesale & retail | 2022 |
| Pitch Perfect Construction Ltd | Construction | 2022 |
| Piton Property Limited | Real estate | 2022 |
| Pixion Limited | Information & communication | 2021 |
| Plaza Toro Limited | Arts & recreation | 1991 |
| Please Clean Group Ltd | Administrative & support | 2024 |
| Please Clean Services Ltd | Administrative & support | 2022 |
| Plenol Limited | Professional & scientific | 2012 |
| Plexa Partners Ltd | Professional & scientific | 2022 |
| PMA Carpentry Ltd | Manufacturing | 2019 |
| PMBAKER59 Ltd | Professional & scientific | 2016 |
| Pond & Perch Wildlife Ltd | Professional & scientific | 2022 |
| Pool Schools Limited | Education | 2009 |
| Porters Claims Consulting Limited | Financial services | 2023 |
| Poseidon Heating & Plumbing Ltd | Construction | 2022 |
| Positive Insightz Ltd | Administrative & support | 2021 |
| Powder Mill Projects Ltd | Construction | 2024 |
| Powwow Creative Limited | Professional & scientific | 2009 |
| Pr.Ime Electrical Services Kent Limited | Construction | 2015 |
| Prakash Consulting Limited | Information & communication | 2017 |
| Predawn Codex Limited | Information & communication | 2025 |
| Premium Bathroom Collections Limited | Wholesale & retail | 2022 |
| Preston and Gordon Ltd | Construction | 2018 |
| Price & Co Consultancy Ltd | Professional & scientific | 2025 |
| Prima Donnas Restaurant Limited | Hospitality | 2003 |
| Prima Holdings (London) Limited | Extraterritorial | 2024 |
| Prince Krofa & Sons Ltd | Professional & scientific | 2014 |
| Principal Property Maintenance Limited | Construction | 2003 |
| Pristine Houses Ltd | Real estate | 2026 |
| Projectivation Ltd | Information & communication | 2011 |
| Promera Construction Limited | Construction | 2025 |
| Property Bright Holdings Ltd | Real estate | 2023 |
| Property Bright Leasehold Ltd | Real estate | 2023 |
| Property Options Recruitment Ltd | Administrative & support | 2024 |
| Prospect Tree Financial Services Ltd | Financial services | 2008 |
| Prospersipp LLP | | 2011 |
| Psalm 443 Limited | Real estate | 2024 |
| Psjz Limited | Administrative & support | 2007 |
| Psychotherapia Limited | Health & social care | 2015 |
| PTC 24 Ltd | Other services | 2026 |
| Purple Bridge Media Limited | Other services | 2008 |
| PWC Recycling Ltd | Administrative & support | 2009 |
| Q-Phiit Ltd | Arts & recreation | 2018 |
| Qonect Ltd | Information & communication | 2022 |
| Quadratech Ltd | Construction | 2025 |
| Qualitylink Services Provider Ltd | Administrative & support | 2011 |
| Quick Sale Property Services Ltd | Real estate | 2009 |
| Quince Commercial Limited | Real estate | 2024 |
| Quixotifai Ltd | Information & communication | 2026 |
| Qwerty Icon Ltd | Information & communication | 2014 |
| R & a Facilities Management Ltd | Households | 2023 |
| R & D P Solutions Limited | Construction | 2010 |
| R J Powell Decor Ltd | Construction | 2021 |
| R P Gage Maintenance Limited | Construction | 2016 |
| R S Sparks Ltd | Construction | 2009 |
| R&B Rail Services International Limited | Information & communication | 2014 |
| R&Sa Holdings Ltd | Real estate | 2025 |
| R.P.E. Flooring Ltd | Construction | 2003 |
| Raife's Catering Limited | Hospitality | 2026 |
| Raife's Coffee and Artisan Bakery Ltd | Hospitality | 2023 |
| Rainforest Lounge Ltd | Hospitality | 2019 |