| Resolute Property Ltd | Construction | 2019 |
| Resoluteldn Ltd | Professional & scientific | 2021 |
| Resolve Coaching Ltd | Other services | 2020 |
| Resona Care Ltd | Information & communication | 2026 |
| Resonate Digital Ltd | Professional & scientific | 2022 |
| Resource Recruitment Management Limited | Administrative & support | 2013 |
| Response Systems Limited | Information & communication | 1991 |
| Restomods Ltd | Information & communication | 2025 |
| Restorative Builders Limited | Construction | 2024 |
| Restore Audio Ltd | Manufacturing | 2022 |
| Restored Retro Ltd | Wholesale & retail | 2025 |
| Resurface Interior Wrapping Limited | Construction | 2025 |
| Resurface Therapy CIC | Health & social care | 2019 |
| Retail Marketing Group Limited | Professional & scientific | 2004 |
| Retail Storey Ltd | Professional & scientific | 2015 |
| Retirement UK Property Services Limited | Construction | 2006 |
| Retracool Limited | Information & communication | 2026 |
| Retrobuilt Limited | Professional & scientific | 2024 |
| Retrotech Engineering Ltd | Manufacturing | 2025 |
| REV Vantage Ltd | Wholesale & retail | 2025 |
| Revamp Realty Investments Limited | Real estate | 2026 |
| Revel Investments Limited | Real estate | 2019 |
| Revere Property Management and Maintenance Ltd | Real estate | 2025 |
| Review International Ltd | Information & communication | 2026 |
| Revisefind Limited | Information & communication | 1991 |
| Reviso A.I. Ltd | Information & communication | 2020 |
| Revive Naturals Ltd | Wholesale & retail | 2022 |
| Revive Poole Limited | Arts & recreation | 2022 |
| Revolution Cheerleading Academy Limited | Arts & recreation | 2024 |
| Reynolds Commercial Body Repairs Limited | Wholesale & retail | 2002 |
| REZ Elec Ltd | Wholesale & retail | 2019 |
| RF Demolition Ltd | Extraterritorial | 2022 |
| RF Grab Hire Ltd | Extraterritorial | 2022 |
| RF Plant & Machine Hire Ltd | Extraterritorial | 2022 |
| RF Recycling Group Ltd | Extraterritorial | 2022 |
| RF Skip Hire Ltd | Extraterritorial | 2022 |
| RF Waste & Recycling Ltd | Extraterritorial | 2022 |
| Rfbtl Limited | Real estate | 2023 |
| RFR Fitness Ltd | Arts & recreation | 2022 |
| RFT Engineering Ltd | Professional & scientific | 2024 |
| RG & PR Middleton Ltd | Health & social care | 2020 |
| RG Civils Limited | Construction | 2022 |
| RG Fernandez Ltd | Administrative & support | 2025 |
| RGM Automotive Ltd | Wholesale & retail | 2025 |
| RGS Installations Ltd | Construction | 2009 |
| RH Luxury Concierge Ltd | Other services | 2025 |
| RH Rail Training & Consulting Services Ltd | Transport & logistics | 2024 |
| RH Sports Therapy Limited | Health & social care | 2023 |
| Rhico District Heating Products Ltd | Wholesale & retail | 2017 |
| Rhino Logistics Limited | Professional & scientific | 2012 |
| RHM 1 Limited | Construction | 2021 |
| Rhodes Vans Limited | Wholesale & retail | 2013 |
| Rholin Limited | Administrative & support | 2013 |
| RHT Consulting Limited | Professional & scientific | 2024 |
| Rhubarb Digital Limited | Information & communication | 2025 |
| Rhydd Education Limited | Other services | 2026 |
| Rhystar Ltd | Wholesale & retail | 2023 |
| Rhysun Ltd | Wholesale & retail | 2023 |
| Rhythm of Life Community Ltd | Wholesale & retail | 2024 |
| Ribat Editions Ltd | Information & communication | 2018 |
| Ribbonwood Hills Management (NO.1) Co. Ltd. | Households | 1998 |
| Rica Group Ltd | Professional & scientific | 2024 |
| Ricardo Nuthall Ltd | Wholesale & retail | 2025 |
| Rich BAG Ltd | Wholesale & retail | 2026 |
| Rich Mortgage Services Limited | Financial services | 2026 |
| Rich SJS Ltd | Information & communication | 2018 |
| Richard Bossom ITS Consulting Limited | Information & communication | 2011 |
| Richard Coleman and Partners Ltd. | Administrative & support | 1997 |
| Richard Jarrett Studio Ltd | Professional & scientific | 2023 |
| Richard Macmillan Consulting Ltd | Professional & scientific | 2023 |
| Richards Group Ltd | Wholesale & retail | 2015 |
| Richardson Town Planning Ltd | Professional & scientific | 2025 |
| Richinson Consulting Ltd | Administrative & support | 2017 |
| Richmond Grey Consulting Ltd | Professional & scientific | 2026 |
| Richmond House (Bournemouth) Management Company Limited | Households | 2023 |
| Richmond Rise (Management) Limited | Households | 1990 |
| Rickmore Limited | Information & communication | 2019 |
| Ride History Limited | Wholesale & retail | 2024 |
| Ride OUT Supply Ltd | Wholesale & retail | 2026 |
| Ridgeline Consulting Limited | Professional & scientific | 2013 |
| Ridgeline Improvements Ltd | Construction | 2026 |
| Ridgemede Care Limited | Health & social care | 2003 |
| RIF Investments Limited | Wholesale & retail | 2022 |
| RIF Sports Management Limited | Real estate | 2023 |
| Riflewear Ltd | Manufacturing | 2026 |
| RIG Revolution Limited | Other services | 2014 |
| Rigel Herbs Ltd | Wholesale & retail | 2025 |
| Right 2 Manage (Dorset) Ltd | Real estate | 2010 |
| Right 2 Manage (Poole) Limited | Real estate | 2025 |
| Right 2 Manage (Purbeck) Limited | Real estate | 2026 |
| Right 2 Manage (Southern) Limited | Real estate | 2017 |
| Right Brain Productions Ltd | Information & communication | 2023 |
| Right Choice Developments Ltd | Construction | 2020 |
| Rightly Guided Ltd | Financial services | 2025 |
| Rightmoving Ltd | Wholesale & retail | 2025 |
| Rimesa H Limited | Information & communication | 2026 |
| Rimshot Studios Limited | Information & communication | 2005 |
| Rincewind Charters LLP | | 2021 |
| Rinedata Holdings Limited | Other services | 2019 |
| Rinedata Limited | Information & communication | 1996 |