| Pharma Available Ltd | Health & social care | 2026 |
| Pharma CSV Limited | Information & communication | 2013 |
| Pharma Rainbow L.P. | | 2011 |
| Pharma Vision Ltd | Wholesale & retail | 2025 |
| Pharmacy Finance Limited | Professional & scientific | 1970 |
| Pharmagreen & Associates | | 1992 |
| Pharmaproducts Associates | | 1991 |
| Pharmatics Limited | Information & communication | 2011 |
| Pharmcom Trading Holdings LP | | 2018 |
| Pharmcos Trade LP | | 2015 |
| Pharmexpo L.P. | | 2013 |
| Pharmunion GB LP | | 2015 |
| Pharos Music Ltd | Arts & recreation | 2023 |
| Pharos Offshore Ltd. | Extraterritorial | 2005 |
| Phase 3 Engineering Ltd | Professional & scientific | 2022 |
| Phase Biolabs Scotland Ltd | Professional & scientific | 2024 |
| PHASE4 Ventures III FP LP | | 2010 |
| PHASE4 Ventures III GP LP | | 2010 |
| Phatt Street Ltd | Hospitality | 2026 |
| PHC 2424 Ltd | Professional & scientific | 2025 |
| PHD Plumbing and Heating Limited | Construction | 2013 |
| Pheasant Feather Art Limited | Arts & recreation | 2017 |
| Pheno Therapeutics Limited | Professional & scientific | 2018 |
| Phenomenal Solutions Ltd | Information & communication | 2012 |
| Phenomenon Supplies & Machinery Ltd | Wholesale & retail | 2024 |
| PHIDESRO2 Consulting Ltd | Professional & scientific | 2022 |
| Phiit Limited | Information & communication | 2022 |
| Phil MAC Associates LLP | | 2018 |
| Phil Noble Consultancy Ltd | Professional & scientific | 2025 |
| Philemon System LP | | 2013 |
| Philibert Consulting Limited | Information & communication | 2025 |
| Philip Atkinson & Co Ltd | Professional & scientific | 2018 |
| Philip Bald Accountancy Limited | Professional & scientific | 2014 |
| Philip Baxendale Employee Ownership Foundation | Professional & scientific | 2009 |
| Philip Financial Management Ltd | Professional & scientific | 2021 |
| Philip Stewart Photography Limited | Professional & scientific | 2020 |
| Philipenesttrexdr York Ltd | Wholesale & retail | 2026 |
| Phillipa Burns Vascular Surgery Limited | Health & social care | 2017 |
| Phillips Electrical Services Ltd | Construction | 2018 |
| Phillips Investments Limited | Real estate | 2012 |
| Philorth Limited | Real estate | 2003 |
| Philterium Ltd | Administrative & support | 2024 |
| Phinda Investments Ltd. | Real estate | 2020 |
| Phinda Ltd. | Professional & scientific | 2014 |
| Phircaax Ltd | Transport & logistics | 2019 |
| Phit Management Ltd | Professional & scientific | 2014 |
| PHK Portfolio (Scotland) Limited | Real estate | 2023 |
| Phlh Limited | Real estate | 2020 |
| Phlo Technologies Ltd | Wholesale & retail | 2015 |
| Phlox Chemicals Limited | Wholesale & retail | 2025 |
| Phlox Holdings UK Limited | Financial services | 2025 |
| PHO & Roll Ltd | Hospitality | 2025 |
| PHO Viet 1 Limited | Hospitality | 2017 |
| PHO Viet Limited | Hospitality | 2017 |
| Phoenix Alliance LP | | 2016 |
| Phoenix and Sword Ltd | Households | 2025 |
| Phoenix Dalkeith Aparthotel Ltd | Real estate | 2025 |
| Phoenix Developments Edinburgh Limited | Real estate | 2019 |
| Phoenix Economics Limited | Professional & scientific | 2012 |
| Phoenix FH Company Limited | Professional & scientific | 2001 |
| Phoenix General Partner Limited Partnership | | 1992 |
| Phoenix General Partner Limited Partnership II | | 1996 |
| Phoenix General Partner Limited Partnership III | | 1999 |
| Phoenix General Partner Limited Partnership IV | | 2001 |
| Phoenix HOL Ltd | Administrative & support | 2021 |
| Phoenix Holidays LP | | 2016 |
| Phoenix Housing Edinburgh Ltd | Construction | 2023 |
| Phoenix Lawtech Solutions LP | | 2019 |
| Phoenix Medical and Safety Solutions Limited | Health & social care | 2016 |
| Phoenix Organisation L.P. | | 2010 |
| Phoenix Properties Edinburgh Ltd | Real estate | 2015 |
| Phoenix SCP Trustees Limited | Financial services | 1987 |
| Phoenix Star LP | | 2015 |
| Phoenix Travel Services Ltd | Transport & logistics | 2025 |
| Phoenyx Group Ltd | Professional & scientific | 2018 |
| Phone Plus Pstreet Ltd | Wholesale & retail | 2025 |
| Phone Repairs Steps Limited | Wholesale & retail | 2025 |
| Phone Spot Ltd | Information & communication | 2016 |
| Phonogramma Ltd | Manufacturing | 2025 |
| Phonovision Media Holdings Limited | Manufacturing | 2020 |
| Phonovision Records Limited | Manufacturing | 2020 |
| Photoccasions Limited | Professional & scientific | 2017 |
| Photolox Limited | Professional & scientific | 1983 |
| Photon Force Ltd | Manufacturing | 2015 |
| Phragma Trade LP | | 2015 |
| Phraqorion Adaptation Limited | Information & communication | 2026 |
| Phresh Fashion Ltd | Wholesale & retail | 2020 |
| Phriends Food Ltd | Manufacturing | 2022 |
| Phthalo Studio Limited | Professional & scientific | 2022 |
| PHW Property Maintenance Ltd | Administrative & support | 2022 |
| Phylreeva Ltd | Administrative & support | 2023 |
| Phylum Forge Ltd | Information & communication | 1985 |
| Phyos Limited | Information & communication | 2009 |
| Physician Medical Services Ltd | Health & social care | 2023 |
| Physiogrange Limited | Health & social care | 2014 |
| Physique Body Shop Limited | Wholesale & retail | 1994 |
| Physis Affordable Counselling Limited | Health & social care | 2026 |
| Physis Healthcare Ltd | Real estate | 2014 |
| Physis Scotland Limited | Education | 2026 |
| Phytovenomics Ltd | Manufacturing | 2025 |