| PH Hospitality Ltd | Administrative & support | 2010 |
| PH Solutions (2008) Ltd | Information & communication | 2008 |
| PH Technical Limited | Professional & scientific | 2026 |
| Pharm Horizons Ltd | Wholesale & retail | 2023 |
| Pharma Consulting Ltd | Administrative & support | 2017 |
| Pharmaid Health Limited | Wholesale & retail | 2013 |
| Pharmaida Ltd | Wholesale & retail | 2024 |
| Pharmaspot Inspection Services Limited | Health & social care | 2025 |
| Pharmasurge Investment Partnerships Limited | Real estate | 2021 |
| Pharmelegance Limited | Health & social care | 2018 |
| Pharmify Recruitment Ltd | Health & social care | 2022 |
| Pharmtech Ltd | Health & social care | 2016 |
| Phaseline Electrical Limited | Construction | 2006 |
| Phast Limited | Professional & scientific | 2024 |
| Phat Buns Darc Limited | Hospitality | 2022 |
| Phat Lash Ltd | Wholesale & retail | 2018 |
| Phatsausage.Com Ltd | Manufacturing | 2025 |
| Phaze Scaffolding Ltd | Construction | 2019 |
| Phbe Ltd | Construction | 2013 |
| PHD Studio Ltd | Administrative & support | 2016 |
| Phdhardtalk Ltd | Education | 2022 |
| Phecon Developments Limited | Professional & scientific | 2014 |
| Phelan Scaffolding Limited | Construction | 2010 |
| Pheonix Car & Commercial Limited | Wholesale & retail | 2016 |
| Pheonix Fabrication Ltd | Manufacturing | 2021 |
| Pheonix Fire and Security Limited | Construction | 2023 |
| Phil a Thompson @AIM Limited | Professional & scientific | 2013 |
| Phil Bamford Construction Limited | Construction | 2014 |
| Phil Bamford Development Limited | Construction | 2016 |
| Phil Birks Building Services Ltd | Manufacturing | 2018 |
| Phil Hirst Garden Design Ltd | Professional & scientific | 2017 |
| Phil Parkin Ltd | Professional & scientific | 2013 |
| Phil Richards & Associates Financial Planning Ltd | Financial services | 2020 |
| Phil Swift Logistics Limited | Transport & logistics | 2012 |
| Phil Wilson Marketing Ltd | Administrative & support | 2013 |
| Philadelphia Commercial Limited | Construction | 2005 |
| Philadelphia Experiments Ltd | Construction | 2022 |
| Philadelphia Function Suite Ltd | Hospitality | 2012 |
| Philippa Hanna Limited | Arts & recreation | 2012 |
| Philippa Hanna Touring Limited | Arts & recreation | 2013 |
| Philipson Properties Ltd | Construction | 2022 |
| Philistine Tattoo Removal Limited | Health & social care | 2021 |
| Phillida Reid Limited | Arts & recreation | 2010 |
| Phillimore Services Ltd | Arts & recreation | 2026 |
| Phillip Brewer Architecture Ltd | Professional & scientific | 2020 |
| Phillip Davies Bespoke Joinery Limited | Construction | 2017 |
| Phillips Brickwork Limited | Construction | 2014 |
| Phillips Building Company Limited | Real estate | 2024 |
| Phinco Limited | Wholesale & retail | 2023 |
| Phinco Retail Limited | Manufacturing | 2025 |
| PHL Pubs Ltd | Hospitality | 2025 |
| Phlebas House Ltd | Professional & scientific | 2026 |
| Phlux Technology Ltd | Manufacturing | 2020 |
| PHO Viet Sheffied Ltd | Hospitality | 2023 |
| Phoebe Nails Ltd | Other services | 2025 |
| Phoeniixco Limited | Wholesale & retail | 2023 |
| Phoenix Bark Limited | Manufacturing | 2019 |
| Phoenix Biosciences Ltd | Professional & scientific | 2007 |
| Phoenix Building SERVICES123 Limited | Construction | 2014 |
| Phoenix Collingwood Limited | Construction | 2011 |
| Phoenix Collingwood, Construction, Design and Development Limited | Real estate | 2017 |
| Phoenix Creative Ltd | Professional & scientific | 2015 |
| Phoenix Eatery Ltd | Hospitality | 2025 |
| Phoenix Flying School Limited | Education | 2011 |
| Phoenix Investments (1) Ltd | Financial services | 2018 |
| Phoenix Landscape Services Ltd | Administrative & support | 2020 |
| Phoenix Landscaping Ltd | Administrative & support | 2022 |
| Phoenix Regeneration Limited | Professional & scientific | 2003 |
| Phoenix Sports Limited | Arts & recreation | 1997 |
| Phoenix Steels (Sheffield) Limited | Manufacturing | 2005 |
| Phoenix Taxis (SY) Ltd | Transport & logistics | 2023 |
| PHOENIX07 Ltd | Education | 2022 |
| Phone Bar Ltd | Other services | 2015 |
| Phone Food Delivery Ltd | Information & communication | 2021 |
| Phonetical Limited | Wholesale & retail | 2025 |
| Phoneticx Ltd | Wholesale & retail | 2025 |
| Phonics Bear Ltd | Education | 2022 |
| Phonon Systems Limited | Extraterritorial | 2026 |
| Photium Limited | Information & communication | 2012 |
| Photocast Products Limited | Manufacturing | 1977 |
| Photon Communications Ltd | Construction | 2025 |
| Photon Furnished Limited | Wholesale & retail | 2024 |
| Photuris EOT Limited | Financial services | 2025 |
| Photuris Holdings Limited | Real estate | 2024 |
| Photuris Ltd | Construction | 2005 |
| PHP Cleaners Ltd | Administrative & support | 2017 |
| PHS Realisations Limited | Manufacturing | 1985 |
| Phunky Limited | Hospitality | 2010 |
| Physical Performance Academy Ltd | Education | 2025 |
| Physicool Limited | Administrative & support | 2005 |
| Physics Tutor Online Ltd | Education | 2019 |
| Physionet Plus Ltd | Extraterritorial | 2016 |
| Physique Bar Ltd | Hospitality | 2017 |
| Phyto Therapeutics Limited | Real estate | 1995 |
| PI by 3 Ltd | Information & communication | 2016 |
| PIA Claims Services Limited | Other services | 2010 |
| Piagetti Properties Ltd | Real estate | 2023 |
| Pianist United Ltd | Arts & recreation | 2025 |
| PIC & Save Minimarket Limited | Wholesale & retail | 2025 |
| PIC 24 Healthcare Ltd. | Health & social care | 2015 |