| Reaz Graphics Limited | Transport & logistics | 2018 |
| REB Investment Group Limited | Financial services | 2023 |
| Rebo Gear Limited | Wholesale & retail | 2014 |
| Reborn Dolls & Co Limited | Wholesale & retail | 2026 |
| Rebus Tela Limited | Professional & scientific | 2016 |
| Reconnect and Create Ltd | Arts & recreation | 2025 |
| Recovery Property Limited | Construction | 2017 |
| Recovery Therapy Ltd | Other services | 2026 |
| Recovri Ltd | Information & communication | 2025 |
| Recruit Wise Ltd | Administrative & support | 2020 |
| Recruitists Ltd | Administrative & support | 2021 |
| Recruitment Works (UK) Limited | Other services | 2009 |
| Recruitmove Limited | Professional & scientific | 2017 |
| Recycle 4 Cash (UK) Limited | Water & waste | 2011 |
| Recyclenext Limited | Wholesale & retail | 2026 |
| Red and Greens Africana Food Store Ltd | Wholesale & retail | 2023 |
| Red Banana Interiors Limited | Extraterritorial | 2005 |
| Red Dezign Ltd | Professional & scientific | 2000 |
| Red Group Property Management Ltd | Real estate | 2024 |
| Red Group Scaffolding Ltd | Other services | 2019 |
| Red Horse Private Hire Ltd | Transport & logistics | 2026 |
| Red Hot Engineers Ltd | Construction | 2026 |
| Red Leaf Group Limited | Other services | 2017 |
| Red Monkey Holdings Ltd | Real estate | 2016 |
| Red Oak (Yorkshire) Limited | Extraterritorial | 1994 |
| Red Oak Healthcare Limited | Wholesale & retail | 2012 |
| Red Pepper Deli Limited | Hospitality | 2026 |
| Red Post Press Ltd | Professional & scientific | 2019 |
| Red Rose Inns Ltd | Hospitality | 2019 |
| Red Sea 1 Ltd | Hospitality | 2024 |
| Redbasil Ltd | Hospitality | 2019 |
| Redbeck Forecourts Ltd | Wholesale & retail | 2005 |
| Redbeck Service Station Ltd | Wholesale & retail | 2004 |
| Redbox Marketing Ltd | Wholesale & retail | 2024 |
| Redcarr Property Ltd | Real estate | 2024 |
| Reddribbon Ltd | Wholesale & retail | 2024 |
| Redeemed Christian Church of GOD Chapel of HIS Mercy | Other services | 2026 |
| Redline Motor Group Limited | Wholesale & retail | 2025 |
| Redline Performance Yorkshire Ltd. | Wholesale & retail | 2023 |
| Redline Security Solutions Ltd | Administrative & support | 2024 |
| Redmire Motor Group Limited | Wholesale & retail | 2023 |
| Redmire Property Management Ltd | Real estate | 2023 |
| Redmond Group (Yorkshire) Limited | Construction | 2003 |
| Redmond Homes Ltd | Construction | 2025 |
| Redmond Plumbing & Heating Ltd | Construction | 2024 |
| Redpath Respite Care Ltd | Public administration | 2025 |
| Redragon 4619 Ltd | Hospitality | 2020 |
| Redrock Solutions Ltd | Hospitality | 2024 |
| Redrose Properties (NW) Ltd | Real estate | 2023 |
| Redshield Engineering Limited | Manufacturing | 1996 |
| Redstart Lettings Limited | Real estate | 2020 |
| Redstrike Construction Limited | Construction | 2024 |
| Redtabs Limited | Professional & scientific | 2015 |
| Redwood Civils Ltd | Water & waste | 2026 |
| Redworth Associates Limited | Construction | 1994 |
| Redzep Doors Ltd | Manufacturing | 2023 |
| REE Bimms Cares Ltd | Health & social care | 2025 |
| Reehal Solutions Ltd | Construction | 2025 |
| Reelharmony Ltd | Wholesale & retail | 2022 |
| Reems Property Holdings Ltd | Real estate | 2025 |
| Reeve Capital Limited | Information & communication | 2016 |
| Reewia Limited | Administrative & support | 2023 |
| Refinesmiles 32 Limited | Health & social care | 2026 |
| Refinishing Supplies Ltd | Wholesale & retail | 2014 |
| Refink Ltd | Manufacturing | 2021 |
| Reflective Concept Ltd | Manufacturing | 2024 |
| Reflexion Cafe Ltd | Hospitality | 2024 |
| Reflexion Studio-Uk Ltd | Information & communication | 2018 |
| Refraction Detailing Ltd | Wholesale & retail | 2026 |
| Refresh & Repair Ltd | Construction | 2026 |
| Refresh and Renew Aesthetics Limited | Other services | 2023 |
| Refresh Window Cleaning Limited | Administrative & support | 2020 |
| Reftech Refrigeration Ltd | Construction | 2016 |
| Refurb Properties Ltd | Real estate | 2023 |
| Refurbised Cookers Ltd | Other services | 2024 |
| REG Vibe Ltd | Wholesale & retail | 2025 |
| Regai Limited | Information & communication | 2026 |
| Regal Bakery Ltd | Professional & scientific | 2004 |
| Regal Bathrooms Ltd | Wholesale & retail | 2023 |
| Regal Distribution Limited | Extraterritorial | 2024 |
| Regal Food Industries Ltd | Extraterritorial | 2003 |
| Regal Food Ltd | Wholesale & retail | 2009 |
| Regal Food Products Group PLC | Manufacturing | 2009 |
| Regal Food Products Limited | Extraterritorial | 2010 |
| Regal Import Export Ltd | Professional & scientific | 2025 |
| Regal INT Ltd | Manufacturing | 2015 |
| Regal Investment Property Limited | Real estate | 2020 |
| Regal Marketing International Ltd | Professional & scientific | 2024 |
| Regal OUD Ltd | Wholesale & retail | 2024 |
| Regal Plastering Contractors Ltd | Construction | 2023 |
| Regal Refreshments Centre Ltd | Hospitality | 2017 |
| Regal Star Builders Limited | Construction | 2020 |
| Regal Star Shopfront & Shutters Limited | Construction | 2025 |
| Regal Sweets and Snacks Ltd | Hospitality | 2025 |
| Regal Ventures Limited | Professional & scientific | 2009 |
| Regalplace Property Management Limited | Households | 1996 |
| Regen 2000 Association CIC | Information & communication | 2001 |
| Regency Cleaners Limited | Administrative & support | 2009 |
| Regency Court Management (Bradford) Ltd | Other services | 2000 |
| Regency Dining Group Ltd | Hospitality | 2026 |