| ROC Planning Ltd | Administrative & support | 2025 |
| Roccer Ltd | Arts & recreation | 2026 |
| Rocdog Properties Limited | Real estate | 2023 |
| Rocha Properties Ltd | Real estate | 2016 |
| Rocham Grid Limited | Construction | 2015 |
| Rochdale V.E. Limited | Other services | 1997 |
| Roche-Flint Education Ltd | Education | 2019 |
| Roche-Flint Limited | Wholesale & retail | 2015 |
| ROCHE11 Ltd | Real estate | 2026 |
| Rock & Alluvium Limited | Construction | 1984 |
| Rock and Bike Friends Ltd | Administrative & support | 2016 |
| Rock Business Support Ltd | Administrative & support | 2014 |
| Rock City Limited | Hospitality | 1999 |
| Rock Electrical Services Ltd | Construction | 2015 |
| Rock Group International Limited | Professional & scientific | 2020 |
| Rock Living Solutions Ltd | Construction | 2023 |
| Rock Massage Studio Ltd | Wholesale & retail | 2018 |
| Rock Port Trading Ltd | Wholesale & retail | 2025 |
| Rock Star Accountant Holdings Limited | Professional & scientific | 2011 |
| Rockabillies Ltd | Information & communication | 2019 |
| Rocket Business Services Limited | Professional & scientific | 2000 |
| Rockfield Assets Limited | Professional & scientific | 2015 |
| Rockford CT Ltd | Manufacturing | 2025 |
| Rocklane Limited | Information & communication | 2025 |
| Rockley Music Limited | Education | 2016 |
| Rockpecker Limited | Manufacturing | 2012 |
| Rockside Hall Management Limited | Households | 2004 |
| Rocksolid Building Services Limited | Real estate | 2025 |
| Rocksolve International Ltd | Wholesale & retail | 2015 |
| Rocksolve Properties Ltd | Real estate | 2026 |
| Rockstar Drip Ltd | Wholesale & retail | 2020 |
| Rockstar Midlands Limited | Real estate | 2026 |
| Rockstar Property Partners Limited | Real estate | 2025 |
| Rockwood Developments Limited | Construction | 1993 |
| Rocky Point Flava's Ltd | Hospitality | 2025 |
| Rocky Riders Limited | Wholesale & retail | 2016 |
| Rockystar Limited | Transport & logistics | 2019 |
| Roco Maintenance Services Limited | Administrative & support | 2023 |
| Rococo Music Ltd | Information & communication | 2022 |
| Rocsoft Ltd | Information & communication | 2012 |
| Rocson Holdings Limited | Financial services | 2025 |
| Rodders Ltd | Water & waste | 2023 |
| Rodebay Limited | Professional & scientific | 2006 |
| Rodely Consultancy and Training Limited | Professional & scientific | 2016 |
| Roden Street Ltd | Construction | 2023 |
| Roden Street Opco Limited | Real estate | 2026 |
| Rodenvine (Nottingham) Limited | Health & social care | 2005 |
| Rodi Homes Ltd | Real estate | 2025 |
| Rodinglane Ltd | Health & social care | 2021 |
| Rodma Ltd | Transport & logistics | 2021 |
| Rodmead Limited | Real estate | 2005 |
| Rodocodo Limited | Education | 2018 |
| Rodrigues Investments and Lettings Ltd | Real estate | 2026 |
| Roemer Barnes Consultancy Limited | Professional & scientific | 2020 |
| Roemer Barnes Holdings Limited | Financial services | 2023 |
| Roemer Barnes Media Limited | Professional & scientific | 2023 |
| Roemer Barnes Training Limited | Education | 2023 |
| Rofe and KIN Ltd | Wholesale & retail | 2025 |
| Roger Bryant Consulting Limited | Information & communication | 2010 |
| Roger Harrison Architecture Ltd | Professional & scientific | 2010 |
| Roger Twidale Farms Limited | Real estate | 1975 |
| Rogers Holdings Ltd | Wholesale & retail | 2024 |
| Rogers VO Limited | Administrative & support | 2022 |
| Rogers Wealth Management Ltd | Financial services | 2012 |
| Rogue Bear Events Limited | Hospitality | 2024 |
| Rogues’ Gallery Designs Limited | Arts & recreation | 2023 |
| Rohaan Motors Ltd | Wholesale & retail | 2024 |
| Rohan Ahsan Enterprises Ltd | Wholesale & retail | 2025 |
| Rohan Notts Ltd | Other services | 2025 |
| Rohi News Network Limited | Information & communication | 2026 |
| ROJ Barber Clifton Ltd | Other services | 2023 |
| Roja Travel Limited | Administrative & support | 2010 |
| Rojan IT Limited | Information & communication | 2018 |
| Roje Properties Limited | Real estate | 2023 |
| ROK Coffee Limited | Administrative & support | 2003 |
| Rokal Ltd | Real estate | 2015 |
| Rokn AL Aman General Trading Ltd | Wholesale & retail | 2025 |
| ROL Fredbergs UK Limited | Manufacturing | 1996 |
| Rolamis Ltd | Wholesale & retail | 2026 |
| Roland England Urology Limited | Health & social care | 2009 |
| Rolet's Ltd | Real estate | 2024 |
| Roll Deep BJJ Limited | Education | 2022 |
| Roll Models Mentorship CIC | Arts & recreation | 2025 |
| Rollama Education Ltd | Education | 2021 |
| Rollerball Bearings Limited | Extraterritorial | 2021 |
| Rolleston House Ltd | Real estate | 2025 |
| Rolleston Manor Management Company Limited | Households | 2020 |
| Rolling Smoke (Sherwood) Ltd | Hospitality | 2025 |
| Rolling Stock Consultants Limited | Administrative & support | 2016 |
| Rolls Cakes Ltd | Wholesale & retail | 2024 |
| Roma Centre CIC | Education | 2025 |
| Roma Cleaning Service Limited | Administrative & support | 2025 |
| Roma Landscapes Limited | Administrative & support | 2002 |
| Romaca Limited | Health & social care | 2015 |
| Romacs Ltd | Information & communication | 2008 |
| Romacts Contractors Ltd | Construction | 2014 |
| Romadas (UK) Limited | Transport & logistics | 2008 |
| Roman Court Apartments Limited | Households | 2003 |
| Roman Gate (Melton Mowbray) Management Company Limited | Households | 2022 |
| Roman Investment Group Limited | Real estate | 2020 |