| PTM Transportation Ltd | Transport & logistics | 2018 |
| Pudzi Transport Ltd. | Transport & logistics | 2017 |
| Puii Ltd | Transport & logistics | 2025 |
| Pure 9 Ltd | Wholesale & retail | 2018 |
| Pure Bright Carpet Cleaning Ltd | Administrative & support | 2021 |
| Pure Fuels Ltd | Professional & scientific | 2006 |
| Pure Glass Partitions Ltd | Construction | 2019 |
| Pure Heat by T.O.M. Ltd | Construction | 2025 |
| Pureserve 777 Ltd | Administrative & support | 2025 |
| Purna Ltd | Information & communication | 2025 |
| Purple Alternatives Ltd | Real estate | 2022 |
| Purple Monster TV Limited | Arts & recreation | 2026 |
| Purple Wave Ltd | Wholesale & retail | 2024 |
| Putingher Ltd | Administrative & support | 2017 |
| PWJ Resource Ltd | Hospitality | 2024 |
| PYF Trans Ltd | Transport & logistics | 2020 |
| Qavahut Limited | Wholesale & retail | 2025 |
| Qfive Healthcare Ltd | Health & social care | 2026 |
| Qintora Ltd | Information & communication | 2025 |
| Quadra Protocol Ltd | Administrative & support | 2026 |
| Qualetic Ltd | Professional & scientific | 2017 |
| Qualikom Ltd | Professional & scientific | 2023 |
| Quantumbyte IT Ltd | Information & communication | 2025 |
| Quastel Associates Limited | Administrative & support | 1987 |
| Queensway Logistics Ltd | Transport & logistics | 2007 |
| Quench Group Ltd | Hospitality | 2021 |
| Quex Ltd | Information & communication | 2017 |
| Quigleys Stores Ltd | Wholesale & retail | 2023 |
| Qwiktyres Hatfield Limited | Extraterritorial | 2014 |
| Qwiktyres.Com Limited | Wholesale & retail | 2012 |
| R & M Butchers Limited | Wholesale & retail | 2014 |
| R & R Legacy Estates Ltd | Real estate | 2026 |
| R Cadisch & Sons Limited | Manufacturing | 2003 |
| R J Bown (Holdings) Limited | Professional & scientific | 1991 |
| R Levi Limited | Construction | 2014 |
| R P Property Management Limited | Real estate | 2019 |
| R.Singal Consulting Ltd | Information & communication | 2024 |
| R.Z.E Ltd | Real estate | 2024 |
| R4 Search Limited | Administrative & support | 2022 |
| RA Collections and Consultancy Limited | Professional & scientific | 2018 |
| Raccoon and Bear Ltd | Arts & recreation | 2020 |
| Rachel Hodge QS Ltd | Households | 2018 |
| Racquets and Healthtrack Group Limited | Professional & scientific | 1995 |
| Radiographic Quality Management Services Limited | Professional & scientific | 2006 |
| Radiville Ltd | Health & social care | 2025 |
| Radley House Partnership Limited | Professional & scientific | 2014 |
| RADSM99 Limited | Health & social care | 2024 |
| Raging APE Skincare Ltd | Wholesale & retail | 2021 |
| Railgaadi Limited | Professional & scientific | 2006 |
| Rails Software Ltd | Information & communication | 2024 |
| Rainbow Mobile Co., Ltd | Energy | 2025 |
| Rainbow Sparkles Limited | Administrative & support | 2019 |
| Rainier Limited | Hospitality | 2019 |
| Rallore Group Limited | Financial services | 2025 |
| RAM Dandu Services Ltd | Information & communication | 2025 |
| Random Lobster Ltd | Information & communication | 2024 |
| Rangta Arts CIC | Arts & recreation | 2026 |
| Rapid-Route Express Ltd | Transport & logistics | 2025 |
| Rapidfire Unicorn Limited | Information & communication | 2024 |
| Rapturous Limited | Hospitality | 2024 |
| Rarey Home Care Ltd | Health & social care | 2025 |
| Ratan House Repairs Limited | Construction | 2023 |
| RAV Superstore Ltd | Wholesale & retail | 2024 |
| Ravala Services Ltd | Information & communication | 2025 |
| RAX Industries Ltd. | Manufacturing | 2010 |
| Raza Digital Solutionz Ltd | Wholesale & retail | 2025 |
| RBJ Group Limited | Extraterritorial | 2024 |
| RBM Trading Ltd | Wholesale & retail | 2024 |
| Rbndent Ltd | Health & social care | 2025 |
| RC Inns Limited | Hospitality | 2021 |
| RC Trax Ltd | Arts & recreation | 2022 |
| RC22 Consulting Ltd | Professional & scientific | 2022 |
| Rccg Faith Generations Church | Other services | 2022 |
| RCM Rent Ltd | Administrative & support | 2025 |
| RCP Contractors Limited | Construction | 2005 |
| Re-Vamp Home Improvements Limited | Construction | 2006 |
| Reach UK Properties Ltd | Real estate | 2016 |
| Real Solution Consulting Limited | Information & communication | 2015 |
| Real World IT Solutions Limited | Information & communication | 2002 |
| Reallynice Physical Theatre Ltd | Arts & recreation | 2016 |
| Reassurance Property Management Limited | Real estate | 2020 |
| Reassurance Resource Management Limited | Professional & scientific | 2013 |
| Reassurance Security Services Limited | Administrative & support | 2003 |
| Rebellion Media Limited | Information & communication | 2025 |
| Reclaimer Industries Ltd | Agriculture & fishing | 2024 |
| Recovery World Limited | Manufacturing | 2000 |
| Recruitsolutions Ltd. | Administrative & support | 2011 |
| Red and White Fire Protection Limited | Manufacturing | 2014 |
| Red Cat Homes Ltd | Real estate | 2018 |
| Red Cave Limited | Manufacturing | 2007 |
| Red Rudolf Technologies Limited | Information & communication | 2024 |
| Redbourne Avenue Freehold Ltd | Households | 2015 |
| Redesign Digital Ltd | Professional & scientific | 2021 |
| Redland Consultancy Ltd | Professional & scientific | 2026 |
| Redproof Proofreading Ltd | Information & communication | 2025 |
| Redstone Plumbing and Bathrooms Limited | Construction | 2025 |
| Redwood (London) Limited | Real estate | 2026 |
| Redwoods Group Ltd | Administrative & support | 2025 |
| Reed Herts Transport Ltd | Transport & logistics | 2018 |
| Reee Management Consultancy Ltd | Administrative & support | 2013 |