| Repo UK Limited | Administrative & support | 2025 |
| Repton Lowes Ltd | Wholesale & retail | 2025 |
| Republic of Ideas Limited | Professional & scientific | 2025 |
| Reroz Ltd | Information & communication | 2025 |
| Resa Leicester Ltd | Real estate | 2023 |
| Resa Salon Limited | Other services | 2020 |
| Resale-A-Goodie Ltd | Wholesale & retail | 2022 |
| Research Link Ltd | Information & communication | 2024 |
| Reset Balance Ltd | Wholesale & retail | 2024 |
| Reset+ Ltd | Wholesale & retail | 2024 |
| Reshkom Ltd | Wholesale & retail | 2024 |
| Residence Ltd | Real estate | 2020 |
| Residency Limited | Real estate | 2015 |
| Residential Court Limited | Extraterritorial | 2015 |
| Residential Property Asset Management Limited | Real estate | 2009 |
| Resideo Properties Ltd | Households | 2025 |
| Resien Property Investments Ltd | Real estate | 2026 |
| Resilience Through Martial Arts CIC | Health & social care | 2022 |
| Resiliscore Ltd | Information & communication | 2025 |
| Resin Flooring Consultancy Ltd | Construction | 2023 |
| Resinrite Ltd | Construction | 2014 |
| Resinserts Ltd | Manufacturing | 2024 |
| Resoled Ltd | Wholesale & retail | 2025 |
| Resolve Ltd | Construction | 2021 |
| Resolve MD Limited | Health & social care | 2023 |
| Resolve Network Services Limited | Information & communication | 2026 |
| Resolve.Core Technologies Limited | Information & communication | 2026 |
| Resolve.Iq Group Limited | Financial services | 2026 |
| Resolve.Iq Limited | Information & communication | 2025 |
| Resource Intelligent Technology Limited | Information & communication | 2004 |
| Respect & Integrity Cleaning Limited | Administrative & support | 2026 |
| Respect Fitness Limited | Arts & recreation | 2012 |
| Respire Developments Limited | Real estate | 2020 |
| Respond 24 Plumbing & Heating Limited | Construction | 2007 |
| Respond Property Services Limited | Manufacturing | 2020 |
| Response Cleaners Limited | Administrative & support | 2025 |
| Responsible Energi Ltd | Professional & scientific | 2026 |
| Resq Property and Garden Maintenance Ltd | Construction | 2024 |
| Rest Easy Accommodations Ltd | Real estate | 2026 |
| Restaurant & Lounge Secret Garden Ltd | Hospitality | 2023 |
| Restaurante Reina Limited | Administrative & support | 2016 |
| Restore Dignity C.I.C. | Hospitality | 2024 |
| Restore Dignity Support Ltd | Hospitality | 2026 |
| Restruo Properties Ltd | Real estate | 2025 |
| Restyle Leics Ltd | Real estate | 2014 |
| Resurge Sports Therapy and Rehabilitation Ltd | Health & social care | 2025 |
| Resurgo Developments Limited | Construction | 2017 |
| Resurgo Properties Ltd | Real estate | 2016 |
| Resusmed Ltd | Health & social care | 2021 |
| RET MID Ltd | Education | 2024 |
| Retail 365 Limited | Wholesale & retail | 2014 |
| Retail Crazy 12 Ltd | Wholesale & retail | 2026 |
| Retail Crazy 13 Ltd | Wholesale & retail | 2026 |
| Retail Design Associates Limited | Professional & scientific | 2004 |
| Retail Display Installations Limited | Construction | 2019 |
| Retail Display Solutions Ltd | Other services | 2014 |
| Retail House Solutions Limited | Manufacturing | 2005 |
| Retail Insideout Limited | Professional & scientific | 2008 |
| Retail Management Consultancy (RMC) Ltd | Wholesale & retail | 2016 |
| Retail Resources Ltd | Real estate | 2013 |
| Retailtrends UK Ltd | Wholesale & retail | 2024 |
| Retch Limited | Wholesale & retail | 2023 |
| Retreat Power Limited | Energy | 2016 |
| Retro Accounting Ltd | Professional & scientific | 2023 |
| Retro Desire Ltd | Wholesale & retail | 2026 |
| Retro Rebound Limited | Wholesale & retail | 2024 |
| Retro&Co Limited | Wholesale & retail | 2026 |
| Rettrose Limited | Wholesale & retail | 2021 |
| Reuben & Partners Ltd | Real estate | 2021 |
| Reuben and Rene Global Limited | Wholesale & retail | 2016 |
| Reubs Garage Ltd | Wholesale & retail | 2022 |
| Reva Accounting & Payroll Ltd | Information & communication | 2026 |
| Reva Metal Trading Ltd | Wholesale & retail | 2026 |
| Revamp Properties Ltd | Real estate | 2020 |
| Reveal Cleaning Solutions Limited | Administrative & support | 2012 |
| Revell Leisure Limited | Wholesale & retail | 1993 |
| Revenue Pro Ltd | Information & communication | 2021 |
| Revenue Rules Limited | Administrative & support | 2017 |
| Revenzo Limited | Professional & scientific | 2025 |
| Reverb Global Limited | Administrative & support | 2026 |
| Reveye Dream Ltd | Manufacturing | 2022 |
| Revitalize Group Ltd | Administrative & support | 2026 |
| Revitalize Property Services Ltd | Construction | 2024 |
| Reviun Limited | Manufacturing | 2022 |
| Revival (Cheltenham) Limited | Real estate | 2023 |
| Revival Active Ltd | Education | 2020 |
| Revival Care Limited | Health & social care | 2012 |
| Revive Care Limited | Health & social care | 2019 |
| Revive Grounds Maintenance Ltd | Administrative & support | 2025 |
| Revive Heating Leicester Limited | Construction | 2025 |
| Revive Kitchens Limited | Manufacturing | 2010 |
| Revive Massage & Physiotherapy Limited | Other services | 2025 |
| Revive Physio & Wellness Ltd | Education | 2024 |
| Revive Residence Ltd | Health & social care | 2025 |
| Reviveiconics Ltd | Wholesale & retail | 2022 |
| Revo Trading Limited | Administrative & support | 2023 |
| Revolution Academy Limited | Education | 2014 |
| Revolution Asset Management Limited | Real estate | 2020 |
| Revolution Brickwork Ltd | Construction | 2021 |
| Revolution Support Services Limited | Administrative & support | 2013 |