| Quick and Big Ltd | Wholesale & retail | 2019 |
| Quick Coin Recruitment Ltd | Administrative & support | 2025 |
| Quicklase Limited | Health & social care | 2009 |
| Quicksilver Charter LLP | | 2022 |
| Quickwhite Limited | Health & social care | 2025 |
| Quinn Estates Ashford Ltd | Construction | 2017 |
| Quinn Estates Betteshanger Limited | Real estate | 2019 |
| Quinn Estates Fowlmead Limited | Hospitality | 2019 |
| Quinn Homes Limited | Construction | 2019 |
| Quinn Homes Sellindge 2 Limited | Financial services | 2024 |
| Quinn Homes Sellindge Limited | Construction | 2019 |
| Quinn Patel Estates (1) Limited | Construction | 2006 |
| Quinn Patel Ventures Ltd | Financial services | 2024 |
| Quintal Limited | Professional & scientific | 2010 |
| Quinton Holdings Limited | Professional & scientific | 2003 |
| Quisar Ltd | Hospitality | 2015 |
| Quotemetoday.Co.Uk. Ltd | Professional & scientific | 2003 |
| R & B Property Development Limited | Real estate | 2003 |
| R Ambrose Engineering Ltd | Manufacturing | 2017 |
| R B a Goodies Ltd | Wholesale & retail | 2024 |
| R Clark Electrical Ltd | Construction | 2025 |
| R D Vale Limited | Professional & scientific | 2011 |
| R West Electrical Limited | Energy | 2017 |
| R&L Field Maintenance Ltd | Agriculture & fishing | 2022 |
| R. Todd Management Limited | Construction | 2024 |
| R.A. Dale Accounting Limited | Professional & scientific | 2022 |
| R.E. Hills Consultancy Ltd | Professional & scientific | 2025 |
| R.J.A.Elec Ltd | Construction | 2024 |
| R15S Technologies Ltd | Information & communication | 2025 |
| Radcliffe & Radcliffe Limited | Real estate | 2021 |
| Radcliffes Construction Consultants Limited | Professional & scientific | 2017 |
| Radcliffes Definition Limited | Professional & scientific | 2026 |
| Radcliffes Digital Limited | Professional & scientific | 2021 |
| Radcliffes DXR Limited | Professional & scientific | 2025 |
| Radcliffes Environmental Limited | Professional & scientific | 2024 |
| Radcliffes Surveying Limited | Professional & scientific | 2019 |
| Radiance Cleaning Limited | Water & waste | 2025 |
| Radiantplus UK Limited | Health & social care | 2020 |
| Radix Ventures Limited | Health & social care | 2023 |
| Rail Systems Integration Ltd | Transport & logistics | 2018 |
| Rain Ogilvie Designs Ltd. | Wholesale & retail | 2012 |
| Rain Tree Holiday Lets Ltd | Real estate | 2022 |
| Ralph Dyson Investments Limited | Professional & scientific | 2022 |
| Ramen IKO Limited | Hospitality | 2025 |
| Ramo Nanny Limited | Education | 2026 |
| Ramodany Trans Limited | Transport & logistics | 2023 |
| Ramswork Ltd | Administrative & support | 2025 |
| Ramus Seafoods Limited | Wholesale & retail | 1999 |
| Rana Property Services Ltd | Real estate | 2024 |
| Rands Hair Designs Ltd | Other services | 2021 |
| Range Flooring Ltd | Construction | 2021 |
| Rani Shivaji Chabukswar Ltd | Wholesale & retail | 2025 |
| Ratio M&E Services Consultants Ltd. | Construction | 2014 |
| Ravenlea Limited | Wholesale & retail | 2012 |
| RAW ARC Ltd | Professional & scientific | 2024 |
| Rawcap Limited | Administrative & support | 2017 |
| Rawmat Ltd | Wholesale & retail | 2013 |
| Rbgl Limited | Financial services | 2021 |
| RCC Legal Services Limited | Administrative & support | 2024 |
| RD & KE Stokes Limited | Wholesale & retail | 2019 |
| RD71 Ltd | Professional & scientific | 2024 |
| RDF Equipment Rental Limited | Administrative & support | 2013 |
| RDJ Associates Ltd | Arts & recreation | 2019 |
| RDJ Fitness Ltd | Arts & recreation | 2015 |
| Reach Court Developments Limited | Construction | 2013 |
| Read & Partners LLP | | 2018 |
| Readii Limited | Information & communication | 2023 |
| Real Estate Securities Limited | Real estate | 2003 |
| Real Group EOT Limited | Professional & scientific | 2025 |
| Real Psychology Limited | Professional & scientific | 2008 |
| Real Training Limited | Professional & scientific | 2008 |
| Rebourne Sobriety Ltd | Education | 2026 |
| Rechord.Xyz Limited | Information & communication | 2019 |
| Reclaimed Woman Ltd | Other services | 2017 |
| Reclusive Recordings Limited | Information & communication | 2020 |
| Recognizer Ltd. | Information & communication | 2003 |
| Recruit Flow AI Limited | Information & communication | 2026 |
| Rectangular Software Ltd | Information & communication | 2010 |
| Recuperate Ltd | Other services | 2025 |
| Recycled Timber Mats Limited | Construction | 2016 |
| Red Automation Limited | Administrative & support | 2022 |
| Red Bolt Consulting Limited | Information & communication | 2011 |
| Red BOW Boudoir Photography Limited | Professional & scientific | 2022 |
| Red Bullet Web Design Limited | Information & communication | 2006 |
| Red Flooring Designs Ltd | Construction | 2025 |
| Red Fort Capital UK Limited | Financial services | 2018 |
| Red House Nursing Home Limited(The) | Health & social care | 1987 |
| Red Leatherette Ltd | Other services | 2012 |
| Red Lion Bridge LLP | | 2010 |
| Red Media Fire Safety Ltd | Public administration | 2019 |
| Red Ochre Solutions Ltd | Information & communication | 2014 |
| Red Progress Ltd | Professional & scientific | 2015 |
| Redforge Holdings Limited | Other services | 2015 |
| Redpellet Group Ltd | Financial services | 2025 |
| Redruddy Limited | Information & communication | 2017 |
| Redsters Comics Ltd | Wholesale & retail | 2026 |
| Redturk Limited | Professional & scientific | 2021 |
| Redturk Partners LLP | | 2021 |
| Reed Loft Kent Limited | Real estate | 2020 |
| Reel Numbers Ltd | Professional & scientific | 2025 |