| PS3D Labs Ltd | Manufacturing | 2026 |
| PSM Investments (Bridge Street) Ltd | Real estate | 2023 |
| PSM Investments (Castlegate) Ltd | Real estate | 2022 |
| PSM Investments (Exmouth) Ltd. | Real estate | 2026 |
| PSM Investments (Ilkley) Ltd | Real estate | 2024 |
| PSM Investments (Lansdown) Ltd | Real estate | 2023 |
| PSM Investments (Westoe) Limited | Real estate | 2021 |
| PSM Investments (York) Ltd | Real estate | 2023 |
| PSM Investments Limited | Real estate | 2019 |
| PST Consulting (Emea) Ltd | Information & communication | 2016 |
| PSW Consulting Limited | Professional & scientific | 2021 |
| Psych Strength Ltd | Arts & recreation | 2020 |
| PT Interims Limited | Professional & scientific | 2012 |
| Pt&Dsk Trading Limited | Financial services | 2019 |
| PTG Strategic Finance Limited | Professional & scientific | 2025 |
| Pubblish Limited | Information & communication | 2026 |
| Public Sector Access Limited | Professional & scientific | 2022 |
| Publisher Collective Holdings Limited | Financial services | 2022 |
| Publisher Discovery Ltd | Information & communication | 2016 |
| Publisher Growth Studio Ltd | Information & communication | 2026 |
| Pulse Healing Ltd | Health & social care | 2022 |
| Pulse Print and Communications Ltd | Information & communication | 2012 |
| Pulteney Bridge Coffee Ltd | Hospitality | 2020 |
| Pulteney Cafe Ltd | Hospitality | 2023 |
| Pulteney Coffee Shop Ltd | Hospitality | 2025 |
| Pulteney Enterprises Limited | Arts & recreation | 2004 |
| Pulteney Holdings Limited | Real estate | 2013 |
| Pulteney Kitchen Ltd | Hospitality | 2017 |
| Pulteney Mews Investments Limited | Real estate | 2021 |
| Pulteney Practice Limited | Health & social care | 2019 |
| Pura Vida Catering Ltd | Hospitality | 2025 |
| Pure Automotive Solutions Limited | Wholesale & retail | 2010 |
| Pure Avalon Ltd | Wholesale & retail | 2026 |
| Pure Sourcery Ltd | Information & communication | 2021 |
| Pureglen Limited | Real estate | 2006 |
| Puresound Network Ltd | Information & communication | 2018 |
| Purifide Limited | Manufacturing | 2025 |
| Purple Assured Ltd | Education | 2025 |
| Purple Blessings Education Limited | Administrative & support | 2024 |
| Purple C Ltd | Construction | 2026 |
| Purple Medical Limited | Health & social care | 2013 |
| Purple Parasol Ltd | Information & communication | 2003 |
| Purton Property Company Limited | Real estate | 1949 |
| PUT OUR Foot Down Limited | Extraterritorial | 2020 |
| PXO Ltd | Professional & scientific | 2019 |
| Pyramids & Persepolis Ltd | Health & social care | 2025 |
| Pétanque England | Arts & recreation | 2018 |
| Q General Consulting Ltd | Other services | 2019 |
| QA Systems Ltd | Information & communication | 2011 |
| QC Events Limited | Arts & recreation | 2008 |
| QC of Bath Limited | Households | 2025 |
| QED Accountancy Solutions Limited | Professional & scientific | 2007 |
| Qemplate Ltd | Information & communication | 2025 |
| Qnola Limited | Manufacturing | 2014 |
| QQ Education Ltd | Education | 2020 |
| Qserve Consultancy Ltd | Professional & scientific | 2024 |
| Qsurvey (UK) Ltd | Administrative & support | 2010 |
| Qualitechnic Solutions Ltd | Professional & scientific | 2019 |
| Quality Prosthetics Ltd | Health & social care | 2014 |
| Quantill Limited | Information & communication | 2020 |
| Quantum Identity Limited | Information & communication | 2023 |
| Quantum Transport Planning Ltd. | Professional & scientific | 2017 |
| Quantumshift Enterprises Limited | Information & communication | 2006 |
| Quarrymans Court Management Company (Bath) Limited | Households | 2001 |
| Quatrain Studio Ltd | Information & communication | 2026 |
| Quattrofolium Limited | Professional & scientific | 2025 |
| Queen Square Advisory Limited | Professional & scientific | 2018 |
| Queen Square Management Limited | Households | 1980 |
| Queensberry Estates Limited | Hospitality | 2006 |
| Queensberry Hotel Limited | Extraterritorial | 1987 |
| Queensquare Farming Limited | Agriculture & fishing | 2011 |
| Queensquare Trustees Limited | Administrative & support | 2014 |
| Quest Innovation Ltd | Professional & scientific | 2024 |
| Question 5 Limited | Professional & scientific | 2018 |
| Questum Consulting Ltd | Professional & scientific | 2020 |
| Quick Courier Delivery Ltd | Transport & logistics | 2020 |
| Quidos Environmental Limited | Water & waste | 2025 |
| Quidos Holdings Limited | Financial services | 2024 |
| Quidos Limited | Information & communication | 2006 |
| Quidos Vantage Limited | Information & communication | 2024 |
| Quidos Ventures Limited | Professional & scientific | 2024 |
| Quiet Escapes Ltd | Hospitality | 2018 |
| Quinag Communication Limited | Professional & scientific | 2018 |
| Quinch Limited | Real estate | 2002 |
| Quintet UK Investment Ltd | Real estate | 2024 |
| Quintustec Limited | Administrative & support | 2017 |
| Quote Renewable Energy Limited | Construction | 2024 |
| Quvium UK Ltd | Manufacturing | 2013 |
| R & D Garnett Limited | Wholesale & retail | 2006 |
| R & M Lettings Limited | Real estate | 2024 |
| R Browning Painting Limited | Construction | 2016 |
| R D Developments (South West) Limited | Real estate | 2020 |
| R D Owen Services Ltd | Professional & scientific | 1999 |
| R J Bath Limited | Professional & scientific | 2009 |
| R J K (Bath) Ltd | Construction | 2016 |
| R J Knighting Holdings Ltd | Financial services | 2019 |
| R LE Huray Electrical Contractors Limited | Construction | 2010 |
| R Lunch Company Ltd | Hospitality | 2024 |
| R Mcneill Associates Ltd | Professional & scientific | 2003 |
| R U Learning Limited | Education | 2021 |