| Opal Road Limited | Hospitality | 2019 |
| Opal Taverns Limited | Hospitality | 2019 |
| Opalcourt Properties Limited | Extraterritorial | 1990 |
| Open Access Events Limited | Administrative & support | 2015 |
| Orchard Works Vehicle Services Ltd | Wholesale & retail | 2024 |
| Originsource Limited | Professional & scientific | 2026 |
| ORL Developments Limited | Construction | 2018 |
| Osmosis IT Limited | Other services | 2014 |
| OUR Lived Experience Ltd | Professional & scientific | 2023 |
| P & R Minibus & Coach Travel Ltd | Transport & logistics | 2018 |
| P R Pallets Limited | Wholesale & retail | 2003 |
| Paaskula Ltd | Wholesale & retail | 2025 |
| Pajw Project Management Limited | Construction | 2023 |
| Pako Lifts Ltd | Construction | 2019 |
| Palestine Land Society Ltd | Professional & scientific | 2000 |
| Panda Packaging Ltd | Manufacturing | 2018 |
| Parkenny Construction Ltd | Construction | 2017 |
| Pathway Gemini Ltd | Financial services | 2018 |
| Pcri Ltd | Administrative & support | 2025 |
| PD Games Ltd | Information & communication | 2012 |
| Peakmetric Sports Ltd | Arts & recreation | 2026 |
| Penka Petrova Limited | Other services | 2011 |
| Pennine Transport Limited | Information & communication | 2013 |
| Perfect Fit Pilates Limited | Arts & recreation | 2008 |
| Perfect Welding Limited | Manufacturing | 2009 |
| Perry Hamilton Property Limited | Real estate | 2025 |
| Perry Ward Engineering Limited | Manufacturing | 2011 |
| Persy London Limited | Information & communication | 2020 |
| Pest Control Technik Limited | Administrative & support | 2022 |
| Pest Technik Limited | Administrative & support | 2015 |
| Pharmadagio Limited | Other services | 2016 |
| Phoenix SEN Services Limited | Public administration | 2024 |
| Phone Connections Limited | Wholesale & retail | 2001 |
| Phone Master 78 Limited | Other services | 2019 |
| Piano Gilligan Limited | Other services | 2026 |
| Pink Fluffy Unicorns Ltd | Arts & recreation | 2006 |
| Plaistow (Grange) Management Company Limited | Households | 1986 |
| Planinc Limited | Transport & logistics | 2015 |
| Plumbsa Plumbing Limited | Construction | 2015 |
| Plymouth House Management Company Limited | Households | 2018 |
| PME Sports Enterprise Ltd | Arts & recreation | 2019 |
| POP POP Ltd | Real estate | 2022 |
| Powerdrama Limited | Agriculture & fishing | 2003 |
| PPH Property Portfolio Management Ltd | Extraterritorial | 2020 |
| Prestigium Universale Ltd | Construction | 2026 |
| Prevail Heating Ltd | Construction | 2024 |
| PRG Events Limited | Arts & recreation | 2026 |
| Prime Plates Ltd | Manufacturing | 2026 |
| Prime Property Investments Ltd | Hospitality | 2012 |
| Prime Recovery 24/7 Ltd | Water & waste | 2026 |
| Prime UK Medical Limited | Education | 2024 |
| Primeurban Residents Management Limited | Households | 1988 |
| Pro-Active Support Services Limited | Other services | 2008 |
| PRO-CRE8 Ltd | Construction | 2024 |
| PRO84 Construction Ltd | Construction | 2015 |
| Product Bay Ltd | Information & communication | 2026 |
| Project a Consultancy Limited | Professional & scientific | 2022 |
| Prop Account Ltd | Financial services | 2016 |
| Property Services CS Ltd | Transport & logistics | 2026 |
| Proplan Group Ltd | Construction | 2022 |
| Prospace Residential Ltd | Construction | 2022 |
| Prospace Solutions Limited | Other services | 2007 |
| Protea Dental Ltd | Health & social care | 2013 |
| Punch Local Inns Ltd | Hospitality | 2015 |
| Pure Structures Limited | Construction | 2008 |
| Pvsolar Ltd | Construction | 2026 |
| PWM Recruit Limited | Administrative & support | 2020 |
| PWM UK Holdings Limited | Financial services | 2024 |
| Quantitative Services Ltd | Professional & scientific | 2023 |
| Ques Idea Ltd | Hospitality | 2018 |
| Quit the Gym Ltd | Arts & recreation | 2011 |
| R & B Photography Ltd | Professional & scientific | 2019 |
| R and R Events Limited | Other services | 2014 |
| R Penfold Ltd | Professional & scientific | 2018 |
| R.K.N Developments Limited | Real estate | 1998 |
| R9 Recruitment Ltd | Administrative & support | 2016 |
| Rackevic Interiors Ltd | Construction | 2026 |
| Rafe Land & Property Limited | Construction | 2020 |
| Rallystone Limited | Households | 1982 |
| Range of Motion UK Ltd | Education | 2023 |
| RAW Surveying Ltd | Professional & scientific | 2024 |
| Rayner Group Limited | Administrative & support | 2018 |
| Rayner Investment Holdings Limited | Real estate | 2022 |
| Rayner Personnel Limited | Administrative & support | 2012 |
| RB Closer Ltd | Professional & scientific | 2026 |
| Re-Boxed Tech Company Ltd | Wholesale & retail | 2024 |
| Real Agent Network Limited | Information & communication | 2026 |
| Reap Recruitment Ltd | Administrative & support | 2026 |
| Rebecca Anderson Ltd | Professional & scientific | 2025 |
| Recopy MPS Limited | Wholesale & retail | 2020 |
| Redbar Consultancy Limited | Administrative & support | 2016 |
| Redbean Ltd | Professional & scientific | 2025 |
| Redsun Corner Limited | Hospitality | 2019 |
| Redsun Inns Limited | Hospitality | 2019 |
| Redsun Lane Limited | Hospitality | 2019 |
| Redsun Road Limited | Hospitality | 2019 |
| Redsun Taverns Limited | Hospitality | 2019 |
| Redwood (South East) Management Limited | Households | 2019 |
| Redwood Homes (South East) Limited | Construction | 2016 |
| Reeset Retreats Ltd | Administrative & support | 2025 |