| R&S Contracting Ltd | Construction | 2022 |
| R-Kimedia Limited | Information & communication | 2004 |
| R-Solutions Ltd | Information & communication | 2016 |
| R. White Cabinets Limited | Manufacturing | 2003 |
| R.A. Bugler International Transport Limited | Construction | 1989 |
| R.A. Bugler Limited | Construction | 2000 |
| R.B.C. Publishing Limited | Information & communication | 2000 |
| R.J.Holden Ltd | Construction | 2018 |
| R.Lewis Electrical Limited | Construction | 2022 |
| R.V.L. Management Company Limited | Households | 2022 |
| R1 Boat Butlers Limited | Manufacturing | 2006 |
| R24 Investment Limited | Real estate | 2018 |
| R2D2S Tech Limited | Information & communication | 2026 |
| RA & a (Accountants) Limited | Professional & scientific | 1999 |
| RA & a (Properties) Limited | Real estate | 2003 |
| RA 2023 Ltd | Financial services | 2023 |
| RA Joinery Ltd | Construction | 2022 |
| RA Kingz N Kueenz Ltd | Health & social care | 2025 |
| RA Newco Limited | Financial services | 2019 |
| Raaz Trexoza Ltd | Wholesale & retail | 2025 |
| RAB Rooms Limited | Real estate | 2016 |
| Rabmart Limited | Wholesale & retail | 2014 |
| Race Collective Limited | Other services | 2019 |
| Racelink Limited | Arts & recreation | 2026 |
| RAD and KO Limited | Hospitality | 2021 |
| RAD Services Bournemouth Limited | Construction | 2021 |
| Radiant Flow Ltd | Information & communication | 2008 |
| Radiant Wellbeing Ltd | Professional & scientific | 2026 |
| Radiation Safety Ltd | Professional & scientific | 2018 |
| Radish Tech Solutions Ltd | Information & communication | 2017 |
| Radley Hall Management Company Limited | Households | 2001 |
| Rado-Hinks Ltd | Wholesale & retail | 2018 |
| Raestart Ltd | Information & communication | 2025 |
| Rae’S Atelier Ltd | Manufacturing | 2025 |
| Rafal Wojdyla Consulting Ltd | Information & communication | 2020 |
| Rafiq Studios Ltd | Manufacturing | 2025 |
| Ragnar Textile Ltd | Wholesale & retail | 2024 |
| Ragnarok Consulting Limited | Professional & scientific | 2022 |
| Rahat Consulting Limited | Information & communication | 2014 |
| RAI by Design Ltd | Information & communication | 2025 |
| Rainbow 7 Limited | Information & communication | 2019 |
| Rainbow Day Nursery School Ltd | Education | 2007 |
| Rainbow Hosting Ltd | Information & communication | 2021 |
| Rainbow NB Ltd | Hospitality | 2026 |
| Rainbow Pepper Limited | Real estate | 2017 |
| Rainbow Teas Limited | Wholesale & retail | 2020 |
| Rainbow-Treeuk Ltd | Wholesale & retail | 2023 |
| Rainbowpay Ltd | Administrative & support | 2021 |
| Rainsborough Holdings Limited | Real estate | 2023 |
| RAJ Driving School Ltd | Education | 2024 |
| Rajawi Ltd | Wholesale & retail | 2026 |
| Rajuladev's Infocom PVT Ltd | Information & communication | 2024 |
| Rakroz Technologies Ltd | Professional & scientific | 2025 |
| RAM Formwork Limited | Construction | 2006 |
| RAM JET Creative Writing Ltd. | Arts & recreation | 2026 |
| Randall Property Developments Limited | Real estate | 2018 |
| Randall Windows Limited | Construction | 2023 |
| Randle Consulting Ltd | Professional & scientific | 2023 |
| Randle Enterprises Ltd | Information & communication | 2022 |
| Random Variable Limited | Manufacturing | 2025 |
| Rangdar 5 Star Ltd | Wholesale & retail | 2025 |
| Rangerlife Africa Ltd | Professional & scientific | 2025 |
| Rano Healthcare Ltd | Health & social care | 2019 |
| Ransom Accountancy Services Ltd | Professional & scientific | 2012 |
| Ranu Consulting Limited | Public administration | 2023 |
| RAP Solutions Limited | Information & communication | 2007 |
| Rapid Railway Route Conductors UK Ltd | Transport & logistics | 2025 |
| Rapid Response Fittings Limited | Wholesale & retail | 1996 |
| Rapport International Limited | Professional & scientific | 1997 |
| Raquelle Limited | Wholesale & retail | 2026 |
| Rarefield Skills & Employability CIC | Education | 2025 |
| Rareloop Limited | Information & communication | 2011 |
| RAS Care Contract Management Company Limited | Health & social care | 2023 |
| RAS Care Limited | Health & social care | 2018 |
| Rasan Ltd | Other services | 2025 |
| Rasco Revilo Limited | Real estate | 2009 |
| Rasgo Saleemi Ltd | Wholesale & retail | 2025 |
| Raspberry Technology Limited | Information & communication | 2025 |
| Ratemove Ltd | Wholesale & retail | 2024 |
| Rathbone FX Ltd | Administrative & support | 2010 |
| Rattan Furniture Limited | Administrative & support | 2012 |
| Rattanpark Furniture Limited | Wholesale & retail | 2020 |
| Ravelo Ltd | Wholesale & retail | 2026 |
| Ravenhead Property Investments Limited | Real estate | 1998 |
| Ravine Gardens Limited | Households | 1981 |
| Ravula Horizons Limited | Wholesale & retail | 2025 |
| Rawmusictv Limited | Information & communication | 2020 |
| Rawsome Ltd | Wholesale & retail | 2018 |
| RAY Dream Holding Ltd | Financial services | 2026 |
| Ray&Nn Limited | Hospitality | 2024 |
| Raymond Ellerton Site Management Ltd | Professional & scientific | 2012 |
| Raymondvault Ltd | Wholesale & retail | 2025 |
| Raziq Ltd | Wholesale & retail | 2025 |
| Razor Edge Ltd | Information & communication | 2025 |
| RB (Poole) Limited | Manufacturing | 2014 |
| RB Court Management (Aldwick) Ltd | Households | 2012 |
| RB Project Q Limited | Education | 2021 |
| RB Studio Limited | Professional & scientific | 2007 |
| Rbbttnk Limited | Information & communication | 2026 |
| RBE Data Systems Ltd. | Information & communication | 2024 |