| Raven House Trust Limited | Other services | 1994 |
| Raven Wind Solutions Ltd | Manufacturing | 2026 |
| Rawicom PV Ltd | Construction | 2023 |
| Rawmedlaw CYF. | Health & social care | 2025 |
| Rayiysiun Street Limited | Professional & scientific | 2023 |
| Raymond T Williams Limited | Professional & scientific | 2016 |
| Rayzar Ltd | Wholesale & retail | 2025 |
| Razzberet Ltd | Information & communication | 2019 |
| RB Applied Psychology Limited | Health & social care | 2026 |
| RB Property Investments Limited | Real estate | 2019 |
| RBF Comms. Services Limited | Information & communication | 1996 |
| RBL Investments Ltd | Construction | 2024 |
| Rbtaj Ltd | Real estate | 2024 |
| RC Tech Limited | Professional & scientific | 2022 |
| RC World Limited | Wholesale & retail | 2002 |
| RC1 Promotions Limited | Arts & recreation | 2020 |
| RCH Build (SW) Limited | Construction | 2024 |
| RCH Group (SW) Limited | Wholesale & retail | 2024 |
| RCH Hire (SW) Limited | Wholesale & retail | 2024 |
| RCP Finance Coaching Ltd | Professional & scientific | 2018 |
| RCR Mots and Mechanical Services Ltd | Wholesale & retail | 2018 |
| RCS Synergy Limited | Wholesale & retail | 2023 |
| RD Bull Holdings Limited | Professional & scientific | 2011 |
| RD Mots Ltd | Wholesale & retail | 2020 |
| RD Total Solutions Ltd | Construction | 2025 |
| RDA Environmental Engineering Limited | Manufacturing | 2003 |
| RDA Recycling Limited | Wholesale & retail | 2015 |
| RDE Investments Ltd | Real estate | 2020 |
| Rdis AMS Ltd | Hospitality | 2020 |
| RDJ Investments Limited | Hospitality | 2011 |
| RDP Law Limited | Professional & scientific | 2015 |
| RDP Residential Ltd | Real estate | 2018 |
| RDP10 Promotions Ltd | Arts & recreation | 2019 |
| RDS Landscaping Ltd | Professional & scientific | 2023 |
| Reach Management Company (Isle of Wight) Limited | Households | 2005 |
| Read Plant (Hire and Sales) Limited | Construction | 1980 |
| Readers (Isle of Wight) Limited | Extraterritorial | 1986 |
| Readers Holdings Limited | Administrative & support | 1996 |
| Readers Trading Limited | Wholesale & retail | 1947 |
| Ready Made Theatre Ltd | Arts & recreation | 2007 |
| Ready Mdms Consulting Ltd | Information & communication | 2020 |
| Real Capital Cars Ltd | Transport & logistics | 2025 |
| Real Taste Delicacy Ltd | Hospitality | 2025 |
| Realfriendsgrooming Ltd | Administrative & support | 2025 |
| Realism Studios Limited | Information & communication | 2024 |
| Reality Theatre Community Interest Company | Arts & recreation | 2017 |
| Really Agile Consulting Limited | Administrative & support | 2015 |
| Reassure Safety & Risk Management Limited | Professional & scientific | 2025 |
| Rebar Revolution Limited | Construction | 2024 |
| Rebecca Court Residents Association Limited | Households | 2001 |
| Rebecca Micallef Hair and Makeup Limited | Other services | 2026 |
| Rebel Consultants Limited | Professional & scientific | 2024 |
| Rebello Healthcare,Accounting & Quantity Surveying Ltd | Professional & scientific | 2019 |
| Reborn Coffee Limited | Hospitality | 2025 |
| Reconstruction Records Limited | Information & communication | 2026 |
| Recoswim Ltd | Manufacturing | 2010 |
| Recover Recycling Ltd | Water & waste | 2019 |
| Recruit 121 EOT Limited | Administrative & support | 2025 |
| Recruit 121 Group Limited | Administrative & support | 2010 |
| Recruit 121 Limited | Administrative & support | 2000 |
| Recursive Software Ltd | Information & communication | 2019 |
| Red Abacus Limited | Real estate | 2011 |
| Red Broadcast Limited | Administrative & support | 2020 |
| Red Carpentry and Property Services Ltd | Construction | 2026 |
| Red Castle Investments Ltd | Hospitality | 2025 |
| Red Catering Limited | Administrative & support | 2006 |
| Red Chilli (Kala) Limited | Hospitality | 2018 |
| Red Chilli Newport Limited | Hospitality | 2021 |
| Red Composites (UK) Limited | Manufacturing | 2010 |
| Red DOT Residences Ltd | Real estate | 2025 |
| Red Dragon Coaching Ltd | Arts & recreation | 2026 |
| Red Dragon Computers Limited | Wholesale & retail | 2010 |
| Red Dragon Estates Ltd | Administrative & support | 2014 |
| Red Dragon Flooring Ltd | Wholesale & retail | 2020 |
| Red Edge Media Ltd | Information & communication | 2023 |
| Red Hippo Properties Ltd | Real estate | 2021 |
| Red Hire Limited | Administrative & support | 2020 |
| Red Hot 368 Limited | Hospitality | 2025 |
| Red Lion Sutton Ltd | Hospitality | 2019 |
| Red Ocean Property Ltd | Real estate | 2023 |
| Red Pepper Consulting Ltd | Administrative & support | 2021 |
| Red Phoenix Transport Ltd | Transport & logistics | 2017 |
| Red Rooster Events Ltd | Hospitality | 2021 |
| Red Rooster Property Holdings Limited | Real estate | 2025 |
| Red Squirrel Property Shop Limited | Real estate | 2012 |
| Redbrook Estates Limited | Real estate | 2015 |
| Redbrook Property Management Limited | Real estate | 2003 |
| Redbros Ltd | Manufacturing | 2022 |
| Redcatuk Ltd | Information & communication | 2024 |
| Reddragonhv Ltd | Construction | 2023 |
| Redeaux Limited | Professional & scientific | 2024 |
| Redfern Developments Limited | Construction | 2021 |
| Redhead and Roberts Limited | Construction | 2020 |
| Redi 190 Limited | Real estate | 2009 |
| Redkite AV Ltd | Professional & scientific | 2017 |
| Redrow Driveways and Landscaping Ltd | Construction | 2026 |
| Redspark FSE Limited | Professional & scientific | 2021 |
| Redwing Club Limited | Financial services | 1976 |
| Redwing Quay Limited | Construction | 1976 |
| Redwood Mart Limited | Wholesale & retail | 2025 |