| Premier Electric Motor Rewinds Ltd. | Manufacturing | 2002 |
| Premier Piercing+ Ltd | Wholesale & retail | 2025 |
| Premier Plumbing & Drainage Limited | Construction | 2018 |
| Premier Plumbing and Jetting Limited | Construction | 2024 |
| Premier Sealant Systems Limited | Manufacturing | 1994 |
| Premier Sealants Limited | Extraterritorial | 2013 |
| Premier Stove Installations Limited | Manufacturing | 2011 |
| Premseal Ltd | Extraterritorial | 2020 |
| Prestige Access Limited | Manufacturing | 2022 |
| Prestige Auto Care Limited | Transport & logistics | 2026 |
| Prestige Magnus Holdings Ltd | Financial services | 2026 |
| Prestige Rooflines Ltd | Construction | 2026 |
| Prestige Vehicle Enhancement Ltd | Wholesale & retail | 2020 |
| Prestigelabelholdings Ltd | Administrative & support | 2026 |
| Prestimel Property Ltd | Construction | 2026 |
| Prime Global Trade Limited | Wholesale & retail | 2021 |
| Prime Imaging Group Ltd | Health & social care | 2025 |
| Prime Tyres Ltd | Wholesale & retail | 2021 |
| Prime Vertex UK Ltd | Wholesale & retail | 2023 |
| Primemount Limited | Households | 2005 |
| Printlings Ltd | Wholesale & retail | 2026 |
| Priority Business Services Ltd | Professional & scientific | 2019 |
| Priority Land Limited | Real estate | 2018 |
| Priory Park Partnerships CIC | Other services | 2025 |
| Priory Park Trading Limited | Other services | 2024 |
| Prioryshop Ltd | Wholesale & retail | 2022 |
| Prng Holdings Limited | Transport & logistics | 2015 |
| Pro Digs Ltd. | Real estate | 2024 |
| Pro Wash Park Limited | Other services | 2014 |
| Proctor & Rayner (Properties) Limited | Real estate | 2001 |
| Proctor New Build Homes Ltd | Real estate | 2017 |
| Proctor Trading Limited | Real estate | 2024 |
| Professional Anaesthetic Services Ltd | Health & social care | 2015 |
| Proformance Elite Ltd | Arts & recreation | 2023 |
| Progenix IT Limited | Information & communication | 2007 |
| Prompt Thai Ltd | Wholesale & retail | 2025 |
| Proper Property Inc Limited | Real estate | 2025 |
| Property Investment and Management (Santon) Ltd | Construction | 2024 |
| Protask Solutions Limited | Financial services | 2020 |
| Protek - Ashby Timber Treatments Limited | Manufacturing | 2004 |
| Proudfoot Consulting Ltd | Professional & scientific | 2018 |
| Prudentia Cardiology Services Ltd | Health & social care | 2018 |
| PSC Lincs Ltd | Professional & scientific | 2023 |
| PSM International Holdings Limited | Professional & scientific | 1988 |
| Pstba Holdings Limited | Real estate | 2022 |
| PSW Transport Ltd | Transport & logistics | 2020 |
| PT Mobile Tyres Ltd | Wholesale & retail | 2026 |
| PT Telecoms Solutions Ltd | Information & communication | 2023 |
| PT Tyres Ltd | Wholesale & retail | 2024 |
| Pulf Penrith Ltd | Financial services | 2023 |
| Pulse NDT Limited | Professional & scientific | 2023 |
| Pure Skin Laser Treatments Ltd | Other services | 2025 |
| Pure Water Cleaning Contractors Ltd | Other services | 2018 |
| PURELY9 Motors Ltd | Wholesale & retail | 2022 |
| Purple Avenue Group Limited | Financial services | 2017 |
| Purvis Transport Limited | Transport & logistics | 2010 |
| Pushing Bricks Ltd | Construction | 2025 |
| Q of Hearts Ltd | Wholesale & retail | 2024 |
| Qaac Limited | Professional & scientific | 2018 |
| Qimma Products Limited | Wholesale & retail | 2023 |
| Qlickxl Ltd | Information & communication | 2018 |
| Quality Diner Essex Ltd | Extraterritorial | 2018 |
| Quality Fast Specs Ltd | Wholesale & retail | 2025 |
| Quality Improvements (UK) Limited | Professional & scientific | 2004 |
| Quantum Highways Limited | Construction | 2025 |
| Quantum Traffic Management (Southern) Limited | Transport & logistics | 2016 |
| QUANTUMSOLUTIONS02 Ltd | Wholesale & retail | 2026 |
| Quattro Commercials Ltd | Wholesale & retail | 2022 |
| Quebec Convenience Store Ltd | Wholesale & retail | 2025 |
| Quebec Services Ltd | Professional & scientific | 2019 |
| Quebec Stores Limited | Wholesale & retail | 2022 |
| Quebec Supermarket Limited | Wholesale & retail | 2009 |
| Quibell Fabrications Ltd | Manufacturing | 2002 |
| Quickpulse Delivery Ltd | Transport & logistics | 2025 |
| Quid Pro QUO (Projects) Limited | Professional & scientific | 1995 |
| Qumu Investments Limited | Real estate | 2014 |
| Qwantum Healthcare Ltd | Health & social care | 2025 |
| Qwesha Ltd | Health & social care | 2014 |
| R & G Parkes Properties Limited | Real estate | 2019 |
| R Bell Services Ltd | Wholesale & retail | 2026 |
| R Drury Roofing Contractors Limited | Construction | 2023 |
| R J Civils Home & Landscaping Maintenance Ltd | Transport & logistics | 2021 |
| R J Rightmove Ltd | Real estate | 2025 |
| R K Anaesthetics Ltd | Health & social care | 2019 |
| R Kreilis Ltd | Transport & logistics | 2016 |
| R M H Investments (UK) Limited | Real estate | 2013 |
| R M Technical Consultants Limited | Other services | 2010 |
| R Martinson Limited | Agriculture & fishing | 2008 |
| R O Lettings & Development Ltd | Real estate | 2017 |
| R P Anderson & SON Limited | Agriculture & fishing | 2012 |
| R Parker Blade Repair Ltd | Construction | 2019 |
| R S & M Process Engineers Limited | Professional & scientific | 2001 |
| R S Baxter Consulting Ltd | Professional & scientific | 2022 |
| R S Logistics Ltd. | Transport & logistics | 1997 |
| R Short Build Ltd | Construction | 2022 |
| R Sudintas Limited | Transport & logistics | 2015 |
| R&A Supermarket Ltd | Wholesale & retail | 2026 |
| R&S Corporation Ltd | Wholesale & retail | 2008 |
| R&Z Kubaccy Limited | Real estate | 2025 |
| R.Coulson Plumbing & Heating Ltd | Construction | 2024 |