| REH Pharma Limited | Wholesale & retail | 2018 |
| Rehman Healthcare Limited | Professional & scientific | 2009 |
| Rehman Legacy Group Ltd | Wholesale & retail | 2025 |
| Reid & Rose Accounting Ltd | Professional & scientific | 2022 |
| Reid Electrical & Security Limited | Construction | 2024 |
| Rekilo Limited | Financial services | 2024 |
| Relatestyle Limited | Real estate | 2003 |
| Relative Accountancy (Filey) Limited | Professional & scientific | 2021 |
| Relative Accountancy Limited | Professional & scientific | 2013 |
| Relative:Os Limited | Professional & scientific | 2017 |
| Relax E-Services Ltd | Wholesale & retail | 2024 |
| Release the Houndz Huddersfield Ltd | Other services | 2025 |
| Relentless Recruitment Limited | Administrative & support | 2025 |
| Relesys Ltd | Wholesale & retail | 2022 |
| Reliance Gear Company Limited | Professional & scientific | 2003 |
| Reliance Mechatronics Limited | Professional & scientific | 2004 |
| Reliance RG Limited | Financial services | 2009 |
| Reliance Vigilance Limited | Administrative & support | 2021 |
| Remedy-Natural Products Marketing Limited | Extraterritorial | 2001 |
| Remote Games Holdings Limited | Financial services | 2021 |
| Remote Games Limited | Information & communication | 2011 |
| Renee P Marks Associates Ltd | Health & social care | 2006 |
| Renew and Revive Renovations Ltd | Construction | 2026 |
| Renew Spas Ltd | Wholesale & retail | 2024 |
| Renewable Energy Huddersfield Ltd | Construction | 2024 |
| Renewable Energy Yorkshire Ltd | Construction | 2024 |
| Renewal Aluminium Services Limited | Manufacturing | 2025 |
| Renewed Electrical & Solar Ltd | Construction | 2024 |
| Renorah Limited | Information & communication | 2025 |
| Renteasi Ltd | Real estate | 2026 |
| Rentro Ltd | Hospitality | 2025 |
| Renzelle Jewellery Ltd | Wholesale & retail | 2024 |
| Repairmedia Limited | Extraterritorial | 2014 |
| Replan (U.K.) Limited | Construction | 1983 |
| Reprogram NOW Ltd | Professional & scientific | 2025 |
| Republic Office Furniture UK Ltd | Wholesale & retail | 2023 |
| RES Electrics Ltd | Construction | 2022 |
| Resa Delivery Services Ltd | Hospitality | 2022 |
| Research and Development Tax Ltd | Professional & scientific | 2015 |
| Resichecks Ltd | Information & communication | 2026 |
| Residents Association of Church Vale Developments Limited | Households | 2017 |
| Resolute Commercial Finance Ltd | Financial services | 2018 |
| Resolutepays Limited | Financial services | 2020 |
| Resonance Acoustics Ltd | Information & communication | 2016 |
| Response Event Medics Ltd | Health & social care | 2021 |
| Responsive Learning CIC | Professional & scientific | 2022 |
| Rest Foundry UK Ltd | Manufacturing | 2026 |
| Restart Engineering Limited | Professional & scientific | 2011 |
| Restaurant 102 Limited | Hospitality | 2004 |
| Restock Room Ltd | Wholesale & retail | 2024 |
| Restopedic Ltd | Manufacturing | 2020 |
| Restörr Health & Wellness Ltd | Arts & recreation | 2026 |
| Result Investments Limited | Extraterritorial | 2020 |
| Result Surveying Limited | Professional & scientific | 2020 |
| Retail Shop Hub Ltd | Wholesale & retail | 2021 |
| Retailer Deals Ltd | Wholesale & retail | 2025 |
| Retga Ltd | Hospitality | 2021 |
| Retraining Pain Ltd | Other services | 2020 |
| Retroburn Ltd | Information & communication | 2024 |
| Return to Learn Community Interest Company | Education | 2025 |
| Reuros Capital Ltd | Financial services | 2024 |
| Reuse Tech Solutions Ltd | Manufacturing | 2024 |
| Revell Kitchens Ltd | Administrative & support | 2017 |
| Revintis Limited | Information & communication | 2024 |
| Revision B Limited | Wholesale & retail | 2024 |
| Revival Vintage Limited | Wholesale & retail | 2022 |
| Revive Education Recruitment Limited | Administrative & support | 2024 |
| Revive Home Services Ltd | Administrative & support | 2025 |
| Revive Physio Limited | Health & social care | 2019 |
| Revive Services & Trading Ltd | Wholesale & retail | 2026 |
| Revived Roofing (Yorks) Ltd | Construction | 2021 |
| Revo Labs Ltd | Information & communication | 2024 |
| Revolution Aesthetics Ltd | Health & social care | 2016 |
| Rexz Group Ltd | Wholesale & retail | 2020 |
| Rezina Kelly Consulting Ltd | Education | 2022 |
| RGB Electrical and GAS Services Ltd | Construction | 2006 |
| RGJ Locum Ltd | Health & social care | 2024 |
| RGJ Radiology Services Limited | Health & social care | 2019 |
| Rgmc Limited | Administrative & support | 2019 |
| RH Car Sales Limited | Wholesale & retail | 2020 |
| RHA Ecom Ltd | Wholesale & retail | 2025 |
| RHA Healthcare Limited | Health & social care | 2012 |
| RHA Real Estate Ltd | Real estate | 2023 |
| Rhbas Ltd | Professional & scientific | 2021 |
| Rheda Solutions Ltd | Extraterritorial | 2021 |
| Rhino Construction LLP | | 2015 |
| Rhino Rental Properties Ltd | Real estate | 2024 |
| Rhjd Holdings Limited | Financial services | 2025 |
| RHK Projects Ltd | Professional & scientific | 2026 |
| Rhodes & Shaw Holdings Limited | Financial services | 2021 |
| Rhodes Asset Holdings Limited | Financial services | 2021 |
| Rhubarb Gazelle Limited | Professional & scientific | 2022 |
| Rhymacare Ltd | Administrative & support | 2026 |
| RI Stitching Ltd | Manufacturing | 2023 |
| Ribbleden Mills Limited | Financial services | 2018 |
| Ribera Consultants Limited | Professional & scientific | 2023 |
| Rible Solutions Limited | Information & communication | 2019 |
| Rich Ladz Ltd | Hospitality | 2025 |
| Richard Dean Legal Limited | Professional & scientific | 2022 |
| Richard Hardy (Electrical Engineers) Limited | Manufacturing | 1951 |