| Rogac Mechanical Engineering Limited | Manufacturing | 2005 |
| Roger COE Joinery Limited | Administrative & support | 2008 |
| Rogue State Film & TV Limited | Information & communication | 2023 |
| Rohe Development Limited | Construction | 2025 |
| Rohe Homes Limited | Real estate | 2024 |
| Roial Nurture Centre Ltd | Health & social care | 2020 |
| Roind Construction Ltd | Construction | 2018 |
| Roind Group Ltd | Financial services | 2018 |
| Roind SA100 Ltd | Professional & scientific | 2019 |
| Roind Tax Ltd | Professional & scientific | 2016 |
| Rois Construction Ltd | Construction | 2025 |
| Roja Properties Limited | Real estate | 2016 |
| Rojid Construction Ltd | Construction | 2021 |
| ROK1660 Limited | Other services | 2015 |
| Rokeach OUD Ltd | Wholesale & retail | 2024 |
| Rokel Engineering Limited | Manufacturing | 2012 |
| Rokkaden Holdings Limited | Wholesale & retail | 2023 |
| ROL House Ltd | Real estate | 2023 |
| Roland Gardens Investments Ltd | Real estate | 2023 |
| Roland Hill Gascare Limited | Other services | 2009 |
| Roland Hill Plumbing & GAS Services Limited | Construction | 2004 |
| Roland Preka Holdings Ltd | Real estate | 2025 |
| Roland Preka Ltd | Transport & logistics | 2011 |
| Role Model Crew CIC | Health & social care | 2023 |
| Rolfe Enterprise Ltd | Professional & scientific | 2026 |
| Rolkis TS Ltd | Transport & logistics | 2019 |
| Roll a Round Ltd | Hospitality | 2023 |
| Rollatherm Designs Limited | Professional & scientific | 2010 |
| Rollatherm Holdings Limited | Financial services | 2005 |
| Rollatherm International Group Limited | Administrative & support | 1994 |
| Rolling Mill Services Ltd | Manufacturing | 2008 |
| Rolling Treads Ltd | Construction | 2018 |
| Rolls Rice Sushi Ltd | Hospitality | 2023 |
| ROLW100 Ltd | Professional & scientific | 2023 |
| Roman Expert Ltd | Transport & logistics | 2017 |
| Roman Park Flats NO 3 Limited | Other services | 2020 |
| Roman Radocha Ltd | Transport & logistics | 2017 |
| Romanatech Solutions Ltd | Information & communication | 2025 |
| Romanes Limited | Administrative & support | 1996 |
| Romanian Fresh Food Ltd | Hospitality | 2019 |
| Romanian Lounge Ltd | Hospitality | 2022 |
| Romanian Orthodox Church Northampton Ltd | Health & social care | 2022 |
| Romanian Supplementary School Northamptonshire CIC | Administrative & support | 2024 |
| Romford Drivers Association Limited | Transport & logistics | 2015 |
| Romulus 2016 Ltd | Transport & logistics | 2016 |
| Romulus 2024 Ltd | Transport & logistics | 2024 |
| Romy Ltd | Transport & logistics | 2016 |
| RON Todd FDN Ltd | Hospitality | 2023 |
| Ronald N Care Ltd | Health & social care | 2025 |
| Ronam Acres Limited | Information & communication | 2016 |
| Ronea Ltd | Transport & logistics | 2017 |
| Ronin Render Solutions Ltd | Construction | 2007 |
| Ronliz Limited | Wholesale & retail | 2026 |
| Ronnie Garage Limited | Real estate | 2023 |
| Ronpri & Co Ltd | Transport & logistics | 2025 |
| Ronta Healthcare Ltd | Health & social care | 2021 |
| Ronty Vlad Ltd | Transport & logistics | 2019 |
| Ronzls Accountants Ltd | Professional & scientific | 2015 |
| Rooels Outbound Services Ltd | Administrative & support | 2025 |
| Roof Ability Limited | Construction | 2013 |
| Roofseal Roofing & Contruction Ltd | Construction | 2016 |
| Rookery Open Farm Limited | Agriculture & fishing | 2022 |
| Room From Home Ltd | Real estate | 2017 |
| Roomous Limited | Real estate | 2019 |
| Roosterz Ltd | Hospitality | 2014 |
| Root Group Ltd | Construction | 2015 |
| Root of the Gods Ltd | Education | 2024 |
| Roots and Wings Crew Community Interest Company | Administrative & support | 2025 |
| Roots Retail Ltd | Wholesale & retail | 2023 |
| Rootspace Limited | Information & communication | 2019 |
| ROR Creative Ltd | Professional & scientific | 2014 |
| Roroad Logistics Ltd | Transport & logistics | 2026 |
| Rory Fraser Ltd | Health & social care | 2023 |
| Rosa Schmidt Ltd | Information & communication | 2021 |
| Rosalinda Bakery Ltd | Hospitality | 2025 |
| Rosamaria Ltd | Transport & logistics | 2026 |
| Rose and Crown Hospitality Ltd | Hospitality | 2024 |
| Rose Cottage Crystals Ltd | Wholesale & retail | 2023 |
| Rose Cottage Day Nursery Limited | Health & social care | 2013 |
| Rose Cottage RCH Ltd | Professional & scientific | 2013 |
| Rose Creek Limited | Hospitality | 2023 |
| Rose Greaves Holdings Limited | Financial services | 2026 |
| Rose Greaves Properties Limited | Real estate | 2025 |
| Rose of the Shires Food Company Ltd | Financial services | 2021 |
| Rose Rentals Ltd | Real estate | 2024 |
| Rose's Kitchen Limited | Hospitality | 2012 |
| Rose-Neil Ltd | Extraterritorial | 2015 |
| Roseacres (Weedon) Management Company Limited | Households | 2018 |
| Rosebank Ltd | Real estate | 2020 |
| Rosehill Bearwood Limited | Real estate | 2024 |
| Roseje Rock Foundation | Health & social care | 2023 |
| Rosekessie Ltd | Health & social care | 2020 |
| Rosela Limited | Hospitality | 2022 |
| Roselli Capital Limited | Financial services | 2025 |
| Rosemary Gardens Limited | Extraterritorial | 2016 |
| Rosemary Gardens Mortlake (Freehold) Limited | Households | 2012 |
| Rosemary Gardens,Mortlake(Management)Limited | Households | 1970 |
| Rosemount Legal Services Ltd | Professional & scientific | 2004 |
| Rosen Haulage Ltd | Transport & logistics | 2020 |
| Roses Healthcare Ltd | Other services | 2016 |