| Razar Barber Derby Limited | Other services | 2025 |
| Razor Barber Derby Ltd | Other services | 2024 |
| RB Events Decor Limited | Arts & recreation | 2025 |
| RB Management Consulting Limited | Professional & scientific | 2019 |
| RB Plumbing & Tiling Ltd | Construction | 2026 |
| RB Property Renovations Ltd | Real estate | 2023 |
| RBK Properties Development Limited | Real estate | 2026 |
| Rbkb Ltd | Administrative & support | 2026 |
| Rbmph Enterprise Limited | Financial services | 2023 |
| Rbsb Property Ltd | Financial services | 2025 |
| Rccg Living Seed Church Derby | Other services | 2025 |
| Rccg the Shepherd House Derby | Other services | 2024 |
| Rccg, Fountain of Life (FOL) Limited | Other services | 2023 |
| Rcgsales Limited | Wholesale & retail | 2024 |
| RCH Insight Ltd | Education | 2025 |
| RCH Property Limited | Real estate | 2022 |
| RCH Trading Ltd | Other services | 2022 |
| Rchc Asset Management Ltd | Real estate | 2022 |
| Rclamb Ltd | Construction | 2023 |
| RCM Brentwood Limited | Arts & recreation | 2015 |
| RCS Homes Limited | Wholesale & retail | 1995 |
| RCS Maintenance Group Limited | Construction | 2017 |
| RCY Tech Consult Ltd | Construction | 2023 |
| RD Bars Limited | Hospitality | 2024 |
| RD Bookings Limited | Hospitality | 2024 |
| RD Cole Property Limited | Construction | 2022 |
| RD Jones (Derby) Ltd | Manufacturing | 2020 |
| RD Property Solutions Ltd | Wholesale & retail | 2014 |
| RD Surgery Limited | Health & social care | 2013 |
| RDB Rail Engineering Limited | Extraterritorial | 2018 |
| RDG Accounting Company Secretarial Limited | Administrative & support | 2011 |
| RDG Accounting Limited | Professional & scientific | 2007 |
| RDK Drylining Limited | Construction | 2011 |
| RDK Interiors Limited | Construction | 2023 |
| RDK Projects Ltd | Professional & scientific | 2015 |
| RDL Plastering and Rendering Ltd | Construction | 2025 |
| RDM SAS Consultancy Ltd | Information & communication | 2018 |
| RDP Auto's Ltd | Wholesale & retail | 2015 |
| RDP Interiors Limited | Manufacturing | 2016 |
| RDR Properties Limited | Construction | 2015 |
| RDS Big Data Solutions Limited | Information & communication | 2019 |
| RDS Group Limited | Administrative & support | 2000 |
| RDS Software Group Limited | Administrative & support | 2000 |
| RDS Tiling Ltd | Construction | 2003 |
| RDS Tools Ltd | Wholesale & retail | 2025 |
| RDT Engineers UK Limited | Professional & scientific | 2012 |
| Rdvg Investments Ltd | Real estate | 2022 |
| RDW Group Limited | Information & communication | 2017 |
| RDX Midlands Ltd | Wholesale & retail | 2025 |
| Re-Communications Holdings Limited | Financial services | 2018 |
| Re-Invention UK Limited | Professional & scientific | 2009 |
| Re-Touch Midlands Limited | Wholesale & retail | 2024 |
| RE: Marketing Limited | Professional & scientific | 2025 |
| Reach Trust | Other services | 2000 |
| Reachable CIC | Administrative & support | 2026 |
| Reacon Intelligence Ltd | Administrative & support | 2009 |
| React Property Maintenance Ltd | Construction | 2010 |
| Reaction Biosciences Ltd | Extraterritorial | 2017 |
| Read & Bent Autos Ltd | Wholesale & retail | 2024 |
| Readling Limited | Education | 2026 |
| Ready, Steady, Go Parent and Toddler Group CIC | Education | 2024 |
| Real Cine Arts Ltd | Information & communication | 2020 |
| Real Deal Furnishing Ltd | Wholesale & retail | 2018 |
| Real Estate Property Solutions Ltd | Real estate | 2024 |
| Real Estates (Nottingham) Limited | Real estate | 1981 |
| Real Healthcare Ltd | Health & social care | 2015 |
| Real Life Brand Ltd | Financial services | 2020 |
| Real Life Group Ltd | Other services | 2018 |
| Real Life Ventures Ltd | Professional & scientific | 2020 |
| Real T Media Ltd | Information & communication | 2025 |
| Real Wise Ltd | Wholesale & retail | 2025 |
| Real World Care Limited | Health & social care | 2016 |
| Realis Pictures Ltd | Arts & recreation | 2023 |
| Realsec Ltd | Information & communication | 2018 |
| Reas Enterprise Limited | Health & social care | 2016 |
| Reason Care Limited | Health & social care | 2005 |
| Rebecca James Limited | Information & communication | 2016 |
| Rebecca Joselyn Designs in Silver Limited | Professional & scientific | 2016 |
| Rebecca Lovatt Humble Warrior Ltd | Education | 2026 |
| Rebecca Marshall Limited | Real estate | 2017 |
| Rebecca Osborn Ltd | Health & social care | 2022 |
| Rebecca Smith Social Work Ltd | Health & social care | 2024 |
| Rebekah Aesthetics RN Ltd | Health & social care | 2026 |
| Rebuild Masters Ltd | Construction | 2023 |
| REC Support Ltd | Information & communication | 2026 |
| Rece Property Ltd | Real estate | 2026 |
| Recovery & Turnaround Limited | Administrative & support | 2014 |
| Recovery Club and Studios Ltd | Other services | 2025 |
| Recreation in Aston | Arts & recreation | 2006 |
| Recrocoat Ltd | Manufacturing | 2024 |
| Rectory Consultants Limited | Real estate | 2026 |
| Rectory Gardens Residents Management Company Limited | Households | 2022 |
| Recycleflon Limited | Professional & scientific | 1983 |
| Recycling-Rides Ltd | Wholesale & retail | 2025 |
| Red & Black PR Limited | Hospitality | 2026 |
| Red Admiral Recruitment Limited | Administrative & support | 2025 |
| Red Arrow Developers Limited | Construction | 2017 |
| Red Beak Solutions Ltd. | Hospitality | 2016 |
| Red Box Business Solutions Ltd | Professional & scientific | 2024 |
| Red Brick Building & Repairs Limited | Construction | 2012 |