| Pure Recharge Limited | Hospitality | 2013 |
| Pure Value Deals Limited | Wholesale & retail | 2026 |
| Pureinsights Technology Ltd | Administrative & support | 2020 |
| Pureskar Limited | Wholesale & retail | 2016 |
| Purfleet Aggregates Limited | Professional & scientific | 1983 |
| Purple Artichoke Consulting Ltd | Professional & scientific | 2019 |
| Purple Bytes Consultancy Limited | Information & communication | 2017 |
| Purple Hygiene UK Limited | Wholesale & retail | 2015 |
| Purple Inclusion Limited | Other services | 2026 |
| Purple Pilchard Limited | Administrative & support | 2005 |
| Purple Rose Properties Limited | Real estate | 2012 |
| Purrform Ltd | Manufacturing | 2011 |
| PW Consultance Limited | Professional & scientific | 2022 |
| PW Crafted Design Limited | Information & communication | 2018 |
| Pyala Ltd | Hospitality | 2017 |
| Pyfeld Properties Limited | Construction | 1997 |
| PYP Construction Recruitment Limited | Construction | 2010 |
| Pytrad Ltd. | Real estate | 2005 |
| Q & L Building Solutions Limited | Construction | 2019 |
| Qblock Ltd | Professional & scientific | 2018 |
| QC Estates Ltd | Construction | 2025 |
| QC Projects Ltd | Construction | 2012 |
| QH Management Limited | Administrative & support | 1976 |
| Qifasolutions Ltd | Professional & scientific | 2012 |
| QOC Management Company Limited | Hospitality | 2009 |
| QSP Global (UK) Limited | Information & communication | 2008 |
| Quad Operations Limited | Professional & scientific | 1992 |
| Qual-It (London) Limited | Wholesale & retail | 2006 |
| Qualitech Healthcare Ltd | Wholesale & retail | 2013 |
| Quality Home Inspectors Ltd | Construction | 2026 |
| Quality Management Specialists Ltd | Professional & scientific | 2013 |
| Quality Options Ltd | Health & social care | 2010 |
| Quant Development Solutions Ltd | Information & communication | 2019 |
| Quantcierge Ltd | Information & communication | 2026 |
| Quanten Limited | Construction | 2010 |
| Quanten Property Limited | Real estate | 2013 |
| Quantica Holdings Ltd | Real estate | 2026 |
| Quantico Associates Limited | Administrative & support | 2017 |
| Quantisys Info Systems Limited | Information & communication | 2025 |
| Quantum Aviation Solutions Limited | Information & communication | 2006 |
| Quantum Executive Services Limited | Administrative & support | 2025 |
| Quantum Property Group Limited | Real estate | 2019 |
| Quantum Travel Ltd | Professional & scientific | 2015 |
| Quantum Tuning Limited | Wholesale & retail | 2010 |
| Quarterfive Recruitment Limited | Administrative & support | 2013 |
| Quattro Telematics Limited | Wholesale & retail | 2013 |
| Qube Investments Ltd | Real estate | 2025 |
| Qubi Pro Ltd | Manufacturing | 2020 |
| Queens Oak Homes Limited | Construction | 2007 |
| Queensgate Developments Limited | Construction | 1964 |
| Queensgate Holdco Limited | Real estate | 2023 |
| Queensgate Homes Limited | Construction | 1963 |
| Queensgate Trust Limited | Financial services | 1978 |
| Queenswood Homes Limited | Construction | 2017 |
| Quench Christian Bookshops | Wholesale & retail | 2011 |
| Quest END Limited | Construction | 2010 |
| Quest Real Estate Limited | Real estate | 2023 |
| Quick Byte Foods Ltd | Manufacturing | 2025 |
| Quick Send Store Ltd | Wholesale & retail | 2024 |
| Quickstart DAS Limited | Education | 2024 |
| Quinnesse Kitchens & Bathrooms Limited | Construction | 2015 |
| Quintessential Craftsman Limited | Construction | 2025 |
| Quintet Technologies Limited | Information & communication | 2010 |
| Quirky Developments Limited | Real estate | 2016 |
| Quocirca Ltd | Extraterritorial | 2019 |
| Quone Cyber Security Limited | Information & communication | 2022 |
| Qustom Ltd | Construction | 2025 |
| Quvars Invest Limited | Real estate | 2025 |
| Qword Solutions Ltd | Information & communication | 2024 |
| R & M Sales Associates Limited | Professional & scientific | 2014 |
| R & R Distribution Ltd | Wholesale & retail | 2006 |
| R & R Thompson Services Ltd | Other services | 2005 |
| R E Walsh Builders Ltd | Construction | 2023 |
| R I Solutions Limited | Financial services | 2009 |
| R J Clyde Builder Limited | Extraterritorial | 2009 |
| R J Stevens Property Solutions Limited | Construction | 2010 |
| R Kelly Limited | Hospitality | 2017 |
| R P Commercial Cleaning Services Limited | Administrative & support | 2010 |
| R S Grant Limited | Construction | 2008 |
| R S Motors (UK) Limited | Wholesale & retail | 2011 |
| R S Welland Limited | Other services | 2017 |
| R&B Walker Limited | Real estate | 2022 |
| R&R Generation Limited | Professional & scientific | 2023 |
| R&S Heating Services Ltd | Construction | 2016 |
| R. E. Electronics Limited | Professional & scientific | 2011 |
| R.A Accounting Consultancy Limited | Other services | 2018 |
| R.A.S.I.T. Universitat (NGO) Limited Partnership | | 2014 |
| R.J. & V.A. Curry Associates Limited | Professional & scientific | 2006 |
| R.M.S. Services Limited | Information & communication | 1993 |
| R.M.W.F.Limited | Real estate | 1956 |
| R2 Supplies Ltd | Wholesale & retail | 2016 |
| R4G Geophysical Limited | Professional & scientific | 2021 |
| RA Mega Tech Ltd | Professional & scientific | 2025 |
| Rachel Fletcher Studio Ltd | Arts & recreation | 2024 |
| Rachel Story Ltd | Manufacturing | 2017 |
| Rada Valeting Limited | Wholesale & retail | 2013 |
| Radhekrishna PVT Ltd | Real estate | 2021 |
| Radiant HDV Ltd | Hospitality | 2025 |
| Radiant Hearts CIC | Education | 2026 |
| Radically Digital Holdings Limited | Financial services | 2022 |