| Ranet Retail Limited | Wholesale & retail | 2019 |
| Ranfall Residents Limited | Households | 2000 |
| Ranford Properties Limited | Real estate | 2021 |
| Ranglebox Ltd | Manufacturing | 2022 |
| Rango Care Ltd | Health & social care | 2025 |
| Rangz Limited | Wholesale & retail | 2018 |
| Rania Automotives Ltd | Wholesale & retail | 2024 |
| Rank Webmaster Ltd | Information & communication | 2025 |
| Ranksuite Ltd | Education | 2024 |
| Ranmoor Butchers Limited | Hospitality | 2026 |
| Ranmoor Castle Limited | Wholesale & retail | 2015 |
| Ranmoor Consulting Limited | Professional & scientific | 2026 |
| Ranmoor Enterprise Ltd. | Real estate | 2012 |
| Ranmoor Estates Limited | Real estate | 1957 |
| Ranmoor Grange Management Company Limited | Households | 2002 |
| Ranmoor Health and Safety Limited | Professional & scientific | 2007 |
| Ranmoor Homes & Developments Ltd | Construction | 2019 |
| Ranmoor Ltd | Wholesale & retail | 2009 |
| Ranmoor Services Limited | Professional & scientific | 2024 |
| Ransley Boardman LLP | | 2026 |
| Ransom Associates Limited | Other services | 2007 |
| Ranson Barnes Recruitment Ltd | Administrative & support | 2024 |
| Ranvis Properties (Sheffield) Limited | Real estate | 1976 |
| Ranya Travel Limited | Transport & logistics | 2025 |
| RAP Group Limited | Hospitality | 2025 |
| Rapid Collectables Ltd | Wholesale & retail | 2026 |
| Rapid Health Hub Ltd | Health & social care | 2025 |
| Rapid Machinery UK Ltd | Manufacturing | 2024 |
| Rapid PB Ltd | Construction | 2025 |
| Rapid Steel Fabrication Limited | Manufacturing | 2023 |
| Rapid Tanning Centre Limited | Other services | 2023 |
| Rapide Global Trading Limited | Wholesale & retail | 2006 |
| Rapidfixx Ltd | Construction | 2025 |
| Rapidjointrelief Ltd | Health & social care | 2025 |
| Rapidrise Management Ltd | Wholesale & retail | 2023 |
| Rapscallions Barbers Ltd | Other services | 2019 |
| Raptor Engineering Limited | Wholesale & retail | 2009 |
| Raptor Engineering Products Limited | Wholesale & retail | 2022 |
| RAR Financial Management Ltd | Professional & scientific | 2020 |
| Rare Connections Consulting Ltd | Professional & scientific | 2023 |
| Rare Digital Marketing Limited | Professional & scientific | 2016 |
| Rare Find Design Ltd | Professional & scientific | 2017 |
| Rare Memo Ltd | Information & communication | 2017 |
| Rare Pubs Ltd | Hospitality | 2023 |
| Rarebleech Ltd | Information & communication | 2022 |
| RARUDECORATING3D Ltd | Construction | 2025 |
| RAS Global Ltd | Wholesale & retail | 2024 |
| RAS1 Services Ltd | Transport & logistics | 2026 |
| RAS2 Ltd | Other services | 2014 |
| Rascals Kids Clubs Limited | Health & social care | 2015 |
| Rasdale Construction Limited | Construction | 2023 |
| Rasen Falcon Finance Ltd | Professional & scientific | 2016 |
| RASGROUP7786 Limited | Administrative & support | 2025 |
| Rasheed Gold Limited | Wholesale & retail | 2020 |
| Rasheeds S6 Ltd | Hospitality | 2025 |
| Rashid Enterprises Ltd | Wholesale & retail | 2025 |
| Rashie Care Ltd | Health & social care | 2023 |
| Rasi's Go Local Ltd | Wholesale & retail | 2025 |
| Rassams Express Limited | Wholesale & retail | 2023 |
| Rassams HQ Ltd | Wholesale & retail | 2020 |
| Rast One Ltd | Hospitality | 2025 |
| RAT Scabies Ltd | Information & communication | 2024 |
| Ratalin Ltd | Professional & scientific | 2011 |
| Rate My World Ltd | Professional & scientific | 2026 |
| Ratel Limited | Hospitality | 2012 |
| Rathroe Management Limited | Professional & scientific | 2023 |
| Rattle and Roll Play Space Ltd | Arts & recreation | 2019 |
| Rattle in Retirement Ltd | Education | 2018 |
| Rattle N Roll Ltd | Health & social care | 2024 |
| RAV Supreme Hand Carwash Ltd | Wholesale & retail | 2019 |
| Rav&Pav Ltd | Hospitality | 2025 |
| Rave Nuit Limited | Information & communication | 2024 |
| Rave UK Limited | Administrative & support | 2009 |
| Ravecam Ltd | Information & communication | 2025 |
| Ravega Ltd | Wholesale & retail | 2021 |
| Ravel Media Limited | Professional & scientific | 2023 |
| Raven Bars Limited | Hospitality | 2025 |
| Raven Grove Properties Ltd | Real estate | 2024 |
| Raven Repair Services Ltd | Manufacturing | 2022 |
| Raven Wines & Spirits Ltd | Wholesale & retail | 2022 |
| RAVEN0114 Ltd | Arts & recreation | 2025 |
| Ravenhill Clearance Services Ltd | Transport & logistics | 2022 |
| Ravenhill Contractors Ltd | Construction | 2025 |
| Ravensdale Health Care Limited | Health & social care | 2010 |
| Ravenshear Holdings Ltd | Financial services | 2024 |
| Raventek Limited | Information & communication | 2021 |
| Raventini Ltd | Real estate | 2023 |
| RAW 4 Limited | Financial services | 2023 |
| RAW Digital Health Limited | Information & communication | 2023 |
| RAW Electrical Solutions & Construction Ltd | Construction | 2017 |
| RAW Kids Franchising (UK) Limited | Other services | 2022 |
| RAW Kids Gymnastics Ltd | Arts & recreation | 2021 |
| RAW Plus Ltd | Hospitality | 2024 |
| RAW Procurement Services Limited | Professional & scientific | 2021 |
| Rawa'A Alqurashi Limited | Manufacturing | 2023 |
| Rawan Food Ltd | Hospitality | 2025 |
| Rawconsult Limited | Hospitality | 2017 |
| Rawdons & Co Ltd | Administrative & support | 2014 |
| Rawfeast Limited | Wholesale & retail | 2022 |
| Rawson Residential Renovations Limited | Construction | 2018 |