| Raynor Limited | Construction | 2008 |
| Raynor Safeguarding Ltd | Education | 2022 |
| Raynors Electrical Services Ltd | Construction | 2019 |
| Raynsford Care Limited | Health & social care | 2004 |
| Raynsford Care Services Limited | Professional & scientific | 2019 |
| Raypat Property Ltd. | Real estate | 2012 |
| Rays Haulage Ltd | Transport & logistics | 2018 |
| Raystone Automotive Ltd | Wholesale & retail | 2026 |
| Rayyan Auto Centre Limited | Wholesale & retail | 2025 |
| Rayyans Burgers & Shakes Ltd | Hospitality | 2019 |
| Rayza Consulting Ltd | Financial services | 2025 |
| RAZ Automotive Limited | Wholesale & retail | 2025 |
| RAZ Dubai Gold Centre Ltd | Wholesale & retail | 2025 |
| RAZ Refurbs Ltd | Other services | 2024 |
| Raza DAR Limited | Health & social care | 2014 |
| Raza Grill Ltd | Hospitality | 2023 |
| Razai Ltd | Wholesale & retail | 2025 |
| Razor Bodyworks Ltd | Wholesale & retail | 2023 |
| Razor Developments (NG) Ltd | Construction | 2020 |
| Razvan Removals Ltd | Transport & logistics | 2023 |
| Razz Enterprise Ltd | Wholesale & retail | 2023 |
| Razzle Dazzle Pots Ltd | Arts & recreation | 2010 |
| RB Accounts Assist Ltd | Professional & scientific | 2025 |
| RB Building Maintenance Services Limited | Construction | 2024 |
| RB Chef Ltd | Hospitality | 2019 |
| Rb-Products Limited | Professional & scientific | 2026 |
| RB5 Ltd | Arts & recreation | 2014 |
| RBA National Ltd | Transport & logistics | 2025 |
| Rbkp Group Ltd | Construction | 2024 |
| RBM Service Limited | Wholesale & retail | 2002 |
| Rbmc UK Ltd | Construction | 2017 |
| Rbna Limited | Professional & scientific | 2011 |
| Rbpd Ltd | Construction | 2025 |
| Rbsl Brewery Tower Ltd | Construction | 2025 |
| Rbsl Developments Ltd | Construction | 2024 |
| Rbsl Holdings Ltd | Financial services | 2024 |
| Rbsl Lettings Ltd | Real estate | 2024 |
| Rbsl Matlock Ltd | Construction | 2025 |
| Rbtb Limited | Real estate | 2011 |
| RC Beeston Ltd | Wholesale & retail | 2022 |
| RC Coaching (SW) Limited | Education | 2025 |
| RC Family Legacy Ltd | Real estate | 2025 |
| RC Hire Ltd | Construction | 2011 |
| RC33 Limited | Hospitality | 2025 |
| RCB Builders Ltd | Construction | 2025 |
| Rcbo Electrical Limited | Construction | 2019 |
| Rccg Rehoboth House Nottingham | Other services | 2024 |
| RCG Projects Ltd | Health & social care | 2019 |
| RCH Joinery Ltd | Construction | 2025 |
| RCM Hospitality Operations Limited | Hospitality | 2023 |
| RCR Developments Ltd | Real estate | 2025 |
| Rcracingsupplies Ltd | Wholesale & retail | 2022 |
| RCS Filling Machines Ltd. | Manufacturing | 2001 |
| RCS Products Limited | Wholesale & retail | 2018 |
| RCW Forensic Psychology Ltd | Health & social care | 2023 |
| RCX Holdings Ltd | Financial services | 2021 |
| RD Financial Management Ltd | Professional & scientific | 2019 |
| RD Forwarding Solutions Limited | Transport & logistics | 2025 |
| RD Hough Limited | Real estate | 2024 |
| RD International Holdings Ltd | Financial services | 2020 |
| RD Properties Group Ltd | Real estate | 2022 |
| RD Property Traders Ltd | Real estate | 2024 |
| RD Security Services Limited | Administrative & support | 2023 |
| RD Trade Solutions Ltd | Wholesale & retail | 2024 |
| RDA Coaching and Performance Analysis Limited | Arts & recreation | 2020 |
| RDA Coaching C.I.C. | Arts & recreation | 2020 |
| RDA Property Solutions Ltd | Households | 2024 |
| RDA Structure Limited | Construction | 2023 |
| RDB Asset Management Ltd | Real estate | 2019 |
| RDC Catering Limited | Hospitality | 2014 |
| Rdcb Limited | Professional & scientific | 2009 |
| RDF Accommodation & Support CIC | Administrative & support | 2024 |
| RDF Care & Support Ltd | Health & social care | 2020 |
| Rdgh Investments Ltd | Real estate | 2025 |
| RDJ Property Care Limited | Construction | 2023 |
| RDL Group Limited | Real estate | 2026 |
| Rdmi Freezing JV Ltd | Construction | 2022 |
| RDO Change Limited | Professional & scientific | 2024 |
| RDR Stoves and Installation Ltd | Wholesale & retail | 2019 |
| Rdrs Group Ltd | Financial services | 2024 |
| RDS Refrigeration Ltd | Manufacturing | 2012 |
| Rdsl Dental Limited | Health & social care | 2015 |
| Rdsw Certified Accountants Limited | Professional & scientific | 2024 |
| RDX Logistics Ltd | Transport & logistics | 2024 |
| Rdyconsulting Limited | Professional & scientific | 2023 |
| RE Accountancy Limited | Professional & scientific | 2013 |
| RE Lets Ltd | Real estate | 2024 |
| Re-Insurance Management & Underwriting Services Limited | Financial services | 2020 |
| Re-Loved Luxury Limited | Wholesale & retail | 2024 |
| Re-Nao Homes Limited | Real estate | 2025 |
| Re-New Mind Psychology Service Ltd | Health & social care | 2023 |
| RE: Design Creations Limited | Professional & scientific | 2003 |
| Re:Projuiced Events Ltd | Administrative & support | 2011 |
| Reach Business Coaching UK Ltd | Administrative & support | 2018 |
| Reach Frontiers Ltd | Construction | 2021 |
| Reach Investment Group Ltd | Real estate | 2025 |
| Reach Learning Group Ltd | Education | 2022 |
| Reach Separations Limited | Professional & scientific | 2011 |
| Reachbranch Limited | Real estate | 2024 |
| REACHOUT2ALL CIC | Education | 2019 |