| Psych Ltd | Health & social care | 2020 |
| PSYCHTHERAPIES1 Limited | Health & social care | 2018 |
| Ptlingerie Ltd | Manufacturing | 2013 |
| PTP Training and Marketing Limited | Administrative & support | 1997 |
| Public and Plants Limited | Financial services | 2023 |
| Public Edinburgh Ltd | Hospitality | 2025 |
| Public Leicester Limited | Hospitality | 2025 |
| Public Loughborough Limited | Hospitality | 2019 |
| Public Mountsorrel Limited | Hospitality | 2024 |
| Public Nottingham Limited | Hospitality | 2024 |
| Pukka Kebab Limited | Extraterritorial | 1998 |
| Pukka Pizza Limited | Extraterritorial | 1993 |
| Pukka Supplies Limited | Extraterritorial | 1998 |
| Pummie Productions Ltd | Information & communication | 2013 |
| PUR Air (2012) Limited | Construction | 2012 |
| Pure Flex Cleaning Ltd | Administrative & support | 2016 |
| Pure Flex Group Ltd | Administrative & support | 2021 |
| Pure Joinery Limited | Construction | 2018 |
| Pure Lounge Limited | Hospitality | 2025 |
| Pure Oven Cleaning Limited | Administrative & support | 2013 |
| Purohit Property Limited | Real estate | 2018 |
| Purple Edge Consulting Ltd | Information & communication | 2021 |
| Purple House Franchising Ltd | Administrative & support | 2017 |
| Purple House Limited | Health & social care | 2011 |
| Purple Penguin Property Ltd | Real estate | 2025 |
| Purple Zebra Events Limited | Professional & scientific | 2019 |
| Push Mobile Media Ltd | Information & communication | 2015 |
| PV Building Services Ltd | Construction | 2022 |
| Pvjh Limited | Financial services | 2025 |
| Pvolume Limited | Information & communication | 2004 |
| PVV Properties Limited | Real estate | 2025 |
| PWR Trading Limited | Households | 2023 |
| Pymm Kitchens & Joinery Limited | Construction | 2022 |
| Pyramids Cafe Ltd | Hospitality | 2025 |
| Pyrocare Ltd | Construction | 2024 |
| PZP Services Limited | Real estate | 2024 |
| Q Abode Ltd | Real estate | 2021 |
| Q Build Consultancy Services Ltd | Professional & scientific | 2018 |
| Q Dessert Limited | Hospitality | 2021 |
| Q of Good Hair Limited | Other services | 2021 |
| Q6000 Limited | Financial services | 1980 |
| Qcbu Limited | Real estate | 2020 |
| Qdos Clinical Services Ltd | Administrative & support | 2017 |
| QED Motor Sport Limited | Wholesale & retail | 2000 |
| Qodeac Digital Media Limited | Information & communication | 2018 |
| QP Investments Ltd | Other services | 1983 |
| QS Group Holdings Limited | Financial services | 2021 |
| Quality Engineering Design (Consulting Engineers) Limited | Professional & scientific | 2005 |
| Quality Life Document Storage Limited | Other services | 2025 |
| Quality Life Legal Limited | Administrative & support | 2010 |
| Quality Life UK (Care Services) Limited | Health & social care | 2014 |
| Quality Pharmacovigilance Services Ltd | Professional & scientific | 2012 |
| Quantserve Limited | Professional & scientific | 2015 |
| Quantum Technologies Associates Limited | Information & communication | 2023 |
| Quantum Technologies Ltd | Professional & scientific | 2025 |
| Quartet Leicester Ltd | Administrative & support | 2013 |
| Quasor Ltd | Professional & scientific | 2025 |
| Quayside Logistics Company Ltd | Professional & scientific | 2023 |
| Qube Management Services Limited | Professional & scientific | 2019 |
| Qube Media Ltd | Professional & scientific | 2025 |
| Queenholme Equestrian Limited | Agriculture & fishing | 2026 |
| Queensgate Consulting Ltd | Professional & scientific | 2021 |
| Quercus Eleven Limited | Manufacturing | 2020 |
| Quick Print (UK) Ltd | Manufacturing | 2001 |
| Quick Snack (Loughborough) Ltd | Hospitality | 2025 |
| Quidsi Ltd | Financial services | 2012 |
| Quiet Stealth Ltd | Professional & scientific | 2025 |
| Quinton's Plumbing & Heating Services Ltd | Construction | 2013 |
| Quoog Limited | Information & communication | 2010 |
| Quorn Construction Limited | Extraterritorial | 2013 |
| Quorn Country Tiles Limited | Construction | 2005 |
| Quorn Creative Solutions Limited | Professional & scientific | 2017 |
| Quorn Dental Limited | Health & social care | 2020 |
| Quorn Guest Houses Limited | Real estate | 1946 |
| Quorn Manor Ltd | Professional & scientific | 2016 |
| Quorn Marina Holdings Limited | Real estate | 2006 |
| Quorn Park Management Limited | Administrative & support | 1997 |
| Quorn Power Solutions UK Limited | Manufacturing | 2023 |
| Quorn Property Investments Limited | Real estate | 2014 |
| Quorn Stone Limited | Extraterritorial | 2022 |
| Quorn Village Community Interest Company | Manufacturing | 2020 |
| Quorndon Estates Ltd | Real estate | 2024 |
| R & a Aesthetics Limited | Health & social care | 2017 |
| R & a Medical Limited | Health & social care | 2016 |
| R & H Technical Services Limited | Construction | 2006 |
| R & J Evans Property Group Limited | Real estate | 2025 |
| R & P Waterfall Limited | Agriculture & fishing | 2001 |
| R + K Polymer Glass Coatings Limited | Manufacturing | 2008 |
| R Clarke Services Ltd | Other services | 2013 |
| R Coad Limited | Real estate | 2015 |
| R Girdwood Surveying Services Limited | Professional & scientific | 2018 |
| R Hannis Limited | Financial services | 2015 |
| R J Dutton Limited | Construction | 2024 |
| R K Motivation Limited | Professional & scientific | 2015 |
| R K Stephenson Limited | Professional & scientific | 2009 |
| R O Steven Plumbing & Heating Limited | Construction | 2016 |
| R Rathod Limited | Professional & scientific | 2009 |
| R S Technical Ventilation Limited | Manufacturing | 2013 |
| R&H Property Developments Limited | Real estate | 2025 |
| R&K Integrity Ltd | Real estate | 2025 |