| Purely Soap Ltd | Professional & scientific | 2010 |
| Purple Butterfly Boutique Ltd | Wholesale & retail | 2013 |
| Purple Orchid Health Ltd | Wholesale & retail | 2015 |
| Purple Sector Talent Limited | Administrative & support | 2025 |
| Pwcc Ltd | Arts & recreation | 2014 |
| Pyconsultancy Limited | Information & communication | 2023 |
| Q Accountancy Limited | Professional & scientific | 2019 |
| Q Help International Limited | Construction | 2013 |
| Q Squared Associates Limited | Information & communication | 2004 |
| QA Consulting Limited | Administrative & support | 1999 |
| Qecuk Ltd | Professional & scientific | 2020 |
| Qentrix Ltd | Information & communication | 2026 |
| Qfocus Ltd | Professional & scientific | 2011 |
| QI Marketing Ltd | Professional & scientific | 2019 |
| Qliktech UK Limited | Information & communication | 2004 |
| QM Plus Consultancy Ltd | Information & communication | 2020 |
| Qomputa Solutions Limited | Information & communication | 2016 |
| QQ Electrical Services Ltd | Construction | 2022 |
| Quality Care Providers Limited | Hospitality | 2018 |
| Quality Roofers and Decorators Ltd | Construction | 2024 |
| Quantimvet.Com Limited | Professional & scientific | 2022 |
| Quantum Ace Limited | Real estate | 2013 |
| Quarters Residential Estate Agents Ltd | Real estate | 2018 |
| Quatrokb Limited | Real estate | 2020 |
| Queensbury Building Consultancy & Developments Ltd | Construction | 2026 |
| Quentela Accounting Limited | Professional & scientific | 2021 |
| Quest Interim Limited | Professional & scientific | 2011 |
| Quickwin Business Solutions Limited | Information & communication | 2009 |
| Quickwin Investments Limited | Real estate | 2020 |
| Quiddity PM Ltd | Professional & scientific | 2023 |
| Quin Systems Limited | Manufacturing | 1984 |
| Quintessential Digital Limited | Information & communication | 2019 |
| Quinticus Associates Limited | Administrative & support | 2014 |
| Quippe Marketing Limited | Professional & scientific | 2010 |
| Quixpay Ltd | Wholesale & retail | 2023 |
| QV Investments Ltd | Real estate | 2024 |
| R & L Barron Ltd | Wholesale & retail | 2023 |
| R & S Mortgages & Protection Limited | Financial services | 2017 |
| R a Hemley Carpentry Ltd | Construction | 2019 |
| R B Development Management Limited | Professional & scientific | 1994 |
| R G Services (UK) Limited | Other services | 2006 |
| R G Services Holdings Limited | Financial services | 2015 |
| R Goswell Limited | Construction | 2010 |
| R J Morgan Fencing Limited | Construction | 2014 |
| R John W Limited | Manufacturing | 2013 |
| R Love U Tion Ltd | Construction | 2021 |
| R Love U Tion Tech Ltd | Information & communication | 2024 |
| R P Metalwork Limited | Manufacturing | 2004 |
| R&J Car Spares Limited | Wholesale & retail | 2014 |
| R&S Pogson Ltd | Education | 2024 |
| R'Evolution Planet Earth Limited | Professional & scientific | 2021 |
| R-Logistics Services Limited | Administrative & support | 2009 |
| R. Talens UK Limited | Wholesale & retail | 2015 |
| R.G. Property Services Limited | Construction | 2018 |
| R5KAPOOR Ltd | Information & communication | 2025 |
| Raan Dwellings Limited | Real estate | 2023 |
| RAB Professional Services Limited | Professional & scientific | 2014 |
| RAC Holdings Limited | Administrative & support | 2015 |
| RAC Property Holdings Ltd | Real estate | 2020 |
| Racing Hearts Limited | Administrative & support | 2025 |
| Raclet Limited | Wholesale & retail | 1969 |
| RAD Consortium Ltd | Professional & scientific | 2021 |
| Radar Tank Gauging Holdings Limited | Manufacturing | 2025 |
| Radar Tank Gauging Ltd | Manufacturing | 1999 |
| Radcliffe Cooper Limited | Professional & scientific | 2013 |
| Radiology Consultancy Services Limited | Health & social care | 2006 |
| Rafael International Limited | Information & communication | 2019 |
| Rafflebags Limited | Extraterritorial | 2026 |
| RAH Investments Limited | Real estate | 1988 |
| Rainbow Social Care Limited | Health & social care | 2012 |
| Raishaan Properties Limited | Real estate | 2024 |
| Rakkstrades Ltd | Wholesale & retail | 2026 |
| RAM IT Limited | Information & communication | 1994 |
| Ramaem Ltd | Wholesale & retail | 2025 |
| Ramsey Roofing Limited | Construction | 2019 |
| Rand Innovations Ltd | Construction | 2024 |
| Randall & Newson Ltd | Manufacturing | 2021 |
| Randolph Happy Limited | Information & communication | 2020 |
| Random Productions Limited | Financial services | 2008 |
| Range Super Cuisine Ltd | Hospitality | 2016 |
| Rangeet Limited | Wholesale & retail | 2021 |
| Raos Cater Limited | Hospitality | 2025 |
| Rapid Clean Trustees Limited | Administrative & support | 2026 |
| Rapid Commercial Cleaning Services Limited | Administrative & support | 1999 |
| Rapt Traders Limited | Administrative & support | 2023 |
| Rasa Commercial Ltd | Wholesale & retail | 2026 |
| Ravens Support Services Ltd | Health & social care | 2020 |
| RAW Quality Associates Ltd | Professional & scientific | 2018 |
| Razzle Dazzle Parties Limited | Arts & recreation | 2005 |
| RB Consortium Limited | Real estate | 2022 |
| RB Engineering Ltd | Real estate | 2018 |
| RB13 Capital Group Ltd | Financial services | 2025 |
| RBO Commercial Limited | Professional & scientific | 2026 |
| RBS Leisure Limited | Other services | 2015 |
| RC Engineering Consultancy Limited | Professional & scientific | 2019 |
| RCJ Electrical Services Limited | Construction | 2018 |
| RCM Building Services Limited | Construction | 2020 |
| RCN Consultancy Ltd | Professional & scientific | 2016 |
| RCP Training Limited | Education | 2006 |
| Rdlm Productions Ltd | Information & communication | 2017 |