| Powering Through Performance Centre Ltd | Arts & recreation | 2017 |
| Powerstax Ltd | Manufacturing | 1992 |
| PPN Brentwood Ltd | Education | 2023 |
| Practical Doors Ltd | Wholesale & retail | 2012 |
| Precision AIM Ltd | Information & communication | 2023 |
| Precision Heating & Plumbing (Essex) Ltd | Construction | 2024 |
| Precision Paints (Essex) Ltd | Manufacturing | 2014 |
| Precision Pharma Consulting Ltd | Professional & scientific | 2024 |
| Precisioncal Services Limited | Professional & scientific | 2026 |
| Precord Limited | Information & communication | 2017 |
| Preditor London Limited | Professional & scientific | 2016 |
| Premier Clean Franchising Ltd | Other services | 2024 |
| Premier Clean Group Ltd | Administrative & support | 2021 |
| Premier Pool Care Limited | Construction | 2019 |
| Premier Rigging Group Ltd | Construction | 2023 |
| Premier Rigging Ltd | Information & communication | 2007 |
| Present ICT UK Ltd | Information & communication | 2001 |
| Press and Play Ltd | Professional & scientific | 2023 |
| Prestige Group Limited | Construction | 2019 |
| Prestige Wraps UK Ltd | Wholesale & retail | 2024 |
| Price Drop 247 Limited | Wholesale & retail | 2012 |
| Pridestand Limited | Professional & scientific | 1987 |
| Prime & Country Homes Limited | Construction | 2018 |
| Prime Africa Limited | Wholesale & retail | 2024 |
| Prime Sealants Ltd | Construction | 2022 |
| Prime Surveying Services Limited | Professional & scientific | 2024 |
| Primoil Limited | Wholesale & retail | 1999 |
| Prince Electronic Supplies Limited | Wholesale & retail | 1987 |
| Prince Properties (Essex) Limited | Real estate | 2024 |
| Print & Web Studio Limited | Wholesale & retail | 2016 |
| Pristine Glazing & Renewables Ltd | Construction | 2017 |
| Pristine Plastering Limited | Construction | 2009 |
| Pristine Plumbing Ltd | Construction | 2021 |
| Prix Fixe Limited | Hospitality | 2008 |
| Pro Auto Engineering Ltd | Professional & scientific | 2024 |
| Pro Estate Developments Ltd | Real estate | 2024 |
| Pro Ridge Roofing & Building Limited | Construction | 2026 |
| Pro-Duct Ventilation Services Ltd | Construction | 2019 |
| Pro-Tiling Fixing Ltd | Construction | 2022 |
| Proactive Service and Maintenance Limited | Manufacturing | 2025 |
| Production Response Limited | Manufacturing | 2016 |
| Professional Active Soccer Schools Ltd | Arts & recreation | 2003 |
| Professional Property Consulting Limited | Professional & scientific | 2024 |
| Profile Carpets & Flooring Limited | Wholesale & retail | 2020 |
| Proheat Renewable Heating Ltd | Construction | 2026 |
| Propa Talent Ltd | Information & communication | 2019 |
| Property @ R & B Ltd | Real estate | 2019 |
| Property Administrators Ltd | Real estate | 2026 |
| Property Link Nationwide Ltd | Construction | 2015 |
| Property Pioneers Ventures Ltd | Real estate | 2017 |
| Property Trader(Uk) Ltd | Real estate | 2020 |
| Prophase Electrical Ltd | Construction | 2025 |
| Proqure Energy Solutions Limited | Wholesale & retail | 2016 |
| Proqure Ltd | Administrative & support | 2016 |
| Prospect Contractors Limited | Construction | 2014 |
| Prospect Development Holdings Limited | Real estate | 2024 |
| Prosper Football Club Ltd | Arts & recreation | 2024 |
| Protrans Logistics Ltd | Wholesale & retail | 2015 |
| Provisions Group Limited | Hospitality | 2025 |
| PRW Heating Solutions Ltd | Construction | 2016 |
| Pugh & Co (Essex) Limited | Professional & scientific | 2014 |
| Pulp Ltd | Manufacturing | 2021 |
| Pulsar Electrical Services Limited | Construction | 1992 |
| Puma Precision Engineering Limited | Manufacturing | 2003 |
| Pure Elegance Beauty Limited | Health & social care | 2013 |
| Pure House Cleaning Ltd | Administrative & support | 2025 |
| Purelectrical Ltd | Construction | 2016 |
| Puretime Property Purchasing Ltd | Administrative & support | 2024 |
| Purposeful Strategy Limited | Professional & scientific | 2024 |
| Purposefully Ltd | Professional & scientific | 2026 |
| Purus Contract Services Limited | Professional & scientific | 2013 |
| Pwrthr Performance Ltd | Arts & recreation | 2023 |
| Qmac Services Ltd | Administrative & support | 2025 |
| Qoob Grdn Ltd | Transport & logistics | 2023 |
| Quad Mgmt Ltd | Professional & scientific | 2019 |
| Quadrant Equipment Ltd. | Professional & scientific | 2009 |
| Quantum BIM Ltd | Professional & scientific | 2025 |
| Quick FIX Limited | Wholesale & retail | 1994 |
| Quitting Hollywood Limited | Manufacturing | 1986 |
| Quode Limited | Information & communication | 2018 |
| R & a Mizen Limited | Real estate | 2023 |
| R & B Bathroom & Tiling Installations Limited | Construction | 2017 |
| R & D Computing Solutions Limited | Hospitality | 2003 |
| R & G Granite and Quartz Ltd | Construction | 2019 |
| R & R Refrigeration Limited | Extraterritorial | 2010 |
| R & S - Research and Services Limited & Co | | 1997 |
| R a Gower Geological Services Limited | Mining & quarrying | 2012 |
| R Hayes Roofing Ltd | Construction | 2013 |
| R J D Engineering (UK) Limited | Professional & scientific | 2013 |
| R J Johnson Limited | Information & communication | 2006 |
| R N a Elite & Co Limited | Administrative & support | 2015 |
| R P Glazing Services Ltd | Construction | 2019 |
| R S Gough Holdings Ltd | Financial services | 2022 |
| R W Security Limited | Administrative & support | 2002 |
| R&A Talent Acquisition Partners Ltd | Administrative & support | 2025 |
| R&G Revival Homes Ltd | Real estate | 2026 |
| R&R Electronic Security Solutions Limited | Extraterritorial | 2008 |
| R&R Fire and Security Limited | Construction | 1998 |
| R&R Seeley Ltd | Construction | 2015 |
| R. Vaughan 2024 Ltd | Construction | 2024 |