| QPS Drylining Ltd | Construction | 2020 |
| QT Acoustics Ltd | Professional & scientific | 2014 |
| QTS Support Services Limited | Professional & scientific | 2019 |
| Quality Irrigation Limited | Administrative & support | 1989 |
| Quality Retail & Catering Butchers Limited | Wholesale & retail | 2007 |
| Quantum Iera Limited | Real estate | 2025 |
| Quantum Taxis Ltd | Transport & logistics | 2013 |
| Quartershot Software Ltd | Information & communication | 2024 |
| Queens Road Residents Limited | Households | 1995 |
| Quench Bath & Body Ltd | Wholesale & retail | 2021 |
| Quinntech Advanced Limited | Professional & scientific | 2025 |
| Qumax Limited | Information & communication | 2019 |
| R Collins Fencing Limited | Construction | 2007 |
| R N K2 Estates Ltd | Real estate | 2025 |
| R N K2 Properties Ltd | Construction | 2022 |
| R T Interior Services Ltd | Construction | 2015 |
| R Trinkets Limited | Wholesale & retail | 2026 |
| R&Me Limited | Administrative & support | 2012 |
| R.E. Building & Consultancy Ltd | Construction | 2023 |
| R.S Management Limited | Administrative & support | 2022 |
| R.V.S. Auto Group Limited | Real estate | 1991 |
| R7J Ltd | Wholesale & retail | 2019 |
| RA Misha Housing Limited | Households | 2025 |
| Rabshika Ltd | Real estate | 2019 |
| Rachel Holmes Limited | Other services | 2011 |
| Racked OUT Solutions Ltd | Construction | 2025 |
| Rafonso Logistics Ltd | Administrative & support | 2016 |
| Raiden Roofing Ltd | Construction | 2026 |
| Rama Tyres Motorline Ltd | Wholesale & retail | 2021 |
| Ramajab Limited | Information & communication | 2026 |
| Ramparts Limited | Wholesale & retail | 2007 |
| Ramsey Construction & Landscapes Ltd | Construction | 2024 |
| Ramz Services Ltd | Hospitality | 2024 |
| Rana and Sons Service PVT Ltd | Hospitality | 2024 |
| Rana B3 Kitchen Ltd | Hospitality | 2025 |
| Rana B3 Limited | Wholesale & retail | 2016 |
| Rana B3 Property Build Limited | Real estate | 2026 |
| Rana B3 Property Investment Ltd | Real estate | 2020 |
| Ranas Investment Limited | Real estate | 2025 |
| Randall Keys Limited | Real estate | 2003 |
| Rangu Commerce Ltd | Other services | 2026 |
| Rank Ravine Ltd | Wholesale & retail | 2023 |
| Rapid Fulfilment Limited | Administrative & support | 2003 |
| Rapid Mobile Mechanics Ltd | Wholesale & retail | 2026 |
| Rapid Reckoning Limited | Professional & scientific | 2009 |
| Rapid Response Realty Ltd | Households | 2025 |
| Rapid Spin Media Ltd | Information & communication | 2012 |
| Rare Words Ltd | Information & communication | 2012 |
| Ratna Property Limited | Real estate | 2026 |
| Raunak's Property Ltd | Hospitality | 2020 |
| RAV Telecomms Limited | Other services | 2021 |
| RB Consultinguk Ltd | Professional & scientific | 2016 |
| Rbts PVT Ltd | Wholesale & retail | 2023 |
| Reactive Hvac Ltd | Construction | 2023 |
| Ready Resource Ltd | Information & communication | 2011 |
| Real Asset Investment (RAI) Ltd | Real estate | 2025 |
| Real Business Edge Limited | Professional & scientific | 2013 |
| Real HQ Ltd | Financial services | 2026 |
| Real Option Ltd | Health & social care | 2018 |
| Realise Live Ltd | Professional & scientific | 2010 |
| Red Blue Ltd | Professional & scientific | 2007 |
| Red Mars Ltd | Real estate | 2023 |
| Redashe Limited | Wholesale & retail | 1986 |
| Redressed Ltd | Information & communication | 2026 |
| Redroute Travel Limited | Administrative & support | 2016 |
| Redwood Design & Build Limited | Construction | 2024 |
| Redwood Investment Advisory Limited | Other services | 2026 |
| Redwood Real Estate Investments Limited | Real estate | 2020 |
| Redwood Realty Limited | Real estate | 2023 |
| Redwood Short Lets Limited | Construction | 2018 |
| Redwood Stays Limited | Real estate | 2023 |
| Reed Electrical Ltd | Construction | 2026 |
| Reflection Swim Limited | Wholesale & retail | 2025 |
| Rehman Holdings Ltd | Hospitality | 2018 |
| Reidy Training Limited | Arts & recreation | 2019 |
| Rejennerate Ltd | Manufacturing | 2023 |
| Relcross Limited | Wholesale & retail | 2001 |
| Remedy Support and Recruitment Group Limited | Administrative & support | 2012 |
| Renew Hair & Beauty Ltd | Other services | 2022 |
| Renewable Energy Finance Ltd | Extraterritorial | 2004 |
| Renodecor Ltd | Construction | 2013 |
| RENOV8TE Ltd | Construction | 2015 |
| Rent Free GAS Limited | Other services | 2020 |
| Repmatch Ltd | Professional & scientific | 2026 |
| Rermal Chimanya Limited | Health & social care | 2017 |
| Reset Button Ltd | Hospitality | 2015 |
| Resinlutions Ltd | Construction | 2026 |
| Resite Materials Limited | Information & communication | 2026 |
| Restoration Express Limited | Wholesale & retail | 2005 |
| Revival Spaces Ltd | Real estate | 2024 |
| Revshub Ltd | Hospitality | 2024 |
| Revvolution Ltd | Wholesale & retail | 2020 |
| Reyes Care Ltd | Health & social care | 2024 |
| RF Investments London Limited | Real estate | 2018 |
| RFT London Ltd | Wholesale & retail | 2011 |
| RHA Traders Ltd | Wholesale & retail | 2025 |
| Rhdistribution Ltd | Wholesale & retail | 2023 |
| Rhino Recovery Ltd | Transport & logistics | 2020 |
| RHK Holdings Ltd | Real estate | 2024 |
| Rich DO IT Ltd | Professional & scientific | 2006 |