| Rachael Reid Ltd | Other services | 2019 |
| Rachel LEY Consultancy Limited | Professional & scientific | 2007 |
| Rachel Price Ltd | Professional & scientific | 2012 |
| Radiance UN Limited | Health & social care | 2008 |
| Radomski Property Services Ltd | Construction | 2019 |
| Rail SYS Engineering Limited | Professional & scientific | 2026 |
| Raiman UK Limited | Real estate | 2015 |
| Raimu Japanese Antiques Ltd | Administrative & support | 2009 |
| Rainham Healthcare Ltd | Health & social care | 2023 |
| Rainham Services Limited | Health & social care | 2018 |
| Rapha Holdings Ltd | Administrative & support | 2020 |
| Raspberry & Rainbow Ltd | Health & social care | 2026 |
| Rayalize Limited | Professional & scientific | 2025 |
| Razvan I C Logistic Ltd | Transport & logistics | 2018 |
| RB Creative Group Ltd | Professional & scientific | 2016 |
| Rchc Management Ltd | Professional & scientific | 2020 |
| RD Tree Surgery Limited | Agriculture & fishing | 2025 |
| Re-Lens Limited | Water & waste | 2025 |
| Re-Phridge Ltd | Professional & scientific | 2021 |
| Re-Tail.Co.Uk Mart Ltd | Information & communication | 2011 |
| Reader Digital Ltd | Wholesale & retail | 2026 |
| Real Pride of Wales Limited | Hospitality | 2022 |
| Real Yorkshire Food Limited | Extraterritorial | 2013 |
| Realisation Design Limited | Professional & scientific | 1996 |
| Rebelrok Ltd | Wholesale & retail | 2022 |
| Recovery Industry Engineering Standards Limited | Administrative & support | 2003 |
| Recrutare Limited | Administrative & support | 2013 |
| Rectory Fold Management Limited | Households | 2018 |
| Red Chilly Limited | Hospitality | 2024 |
| Red Kyte Solutions Limited | Information & communication | 2025 |
| Redbrick (UK) Limited | Construction | 2012 |
| Redbrick Properties (Walmley) Limited | Real estate | 2001 |
| Reddipak Limited | Wholesale & retail | 1989 |
| Rediex Limited | Real estate | 2022 |
| Redwood & Spicer - Arden Street Ltd | Construction | 2025 |
| Redwood and Spicer Ltd | Construction | 2025 |
| Refine Respiratory Ltd | Education | 2015 |
| Regency Villas Title Limited | Other services | 2011 |
| Regenesis Health Travel Ltd | Health & social care | 2020 |
| Reid Family Group Ltd | Real estate | 2025 |
| Reids of Cherry Lodge Ltd | Transport & logistics | 2019 |
| Reklaw Solutions Ltd | Professional & scientific | 2015 |
| Remus Alin Limited | Transport & logistics | 2012 |
| Render Construction Ltd | Construction | 2021 |
| Renstone Limited | Construction | 2014 |
| Resort Trustees Limited | Financial services | 2019 |
| Resplandor Limited | Other services | 2018 |
| Restaurants Inc. Ltd | Hospitality | 2021 |
| Restoreo Ltd | Wholesale & retail | 2024 |
| Retail Cloud Limited | Professional & scientific | 2011 |
| Revelwood Limited | Education | 2010 |
| Reway Infrastructure Limited | Manufacturing | 2017 |
| Rewired Massage Ltd | Arts & recreation | 2024 |
| Reynard Consultancy Ltd | Professional & scientific | 2020 |
| RFB Management Ltd | Professional & scientific | 2017 |
| RGS Properties Limited | Construction | 2023 |
| RH Construction Management Ltd | Professional & scientific | 2025 |
| RH Mowing Ltd | Administrative & support | 2023 |
| Rich International Distribution Ltd | Wholesale & retail | 2018 |
| Richard Cooper Bronze Limited | Wholesale & retail | 2007 |
| Richard Gotch Ltd | Professional & scientific | 2019 |
| Richard Lees Associates Ltd | Administrative & support | 2012 |
| Richard P Holland Limited | Administrative & support | 2023 |
| Richard Paul (Hire) Ltd | Administrative & support | 2014 |
| Richard Paul (Sales) Limited | Wholesale & retail | 1998 |
| Richard Walton Consultants Limited | Administrative & support | 2002 |
| Richard's Place (Tiddington) Management Company Limited | Households | 2021 |
| Richards Construction and Development Limited | Construction | 2024 |
| Richards Growth Partners Ltd | Information & communication | 2023 |
| Rigby Capital Limited | Financial services | 2014 |
| Rigby Group (RG) PLC | Financial services | 1997 |
| Rigby Group Technology Investments Ltd | Financial services | 2014 |
| Rigby Private Equity Limited | Financial services | 2015 |
| Rist Transport Ltd | Transport & logistics | 2023 |
| Rita Mansfield Associates Limited | Administrative & support | 2004 |
| Rivard Consulting Limited | Information & communication | 2009 |
| River Meadow Company Ltd | Real estate | 2022 |
| River Motorhomes Limited | Wholesale & retail | 2020 |
| Riverbank Gardens Management Company Limited | Households | 1999 |
| RJ Hartwell Plant Hire Limited | Administrative & support | 2019 |
| RJ Mackenzie Limited | Water & waste | 2012 |
| RLF Properties Limited | Real estate | 1999 |
| RLI Healthcare Ltd | Health & social care | 2023 |
| RLL Legal Ltd | Professional & scientific | 2024 |
| RMA Contracting Limited | Professional & scientific | 2018 |
| RMH Hire Limited | Hospitality | 2024 |
| RMH Motors Limited | Wholesale & retail | 2024 |
| RMH Property Holdings Limited | Real estate | 2024 |
| RMR Consulting Midlands Limited | Professional & scientific | 2013 |
| RN Logistics Ltd | Transport & logistics | 2025 |
| Roadsiteland Limited | Real estate | 2021 |
| Roal Property Ltd | Real estate | 2024 |
| ROB Morris Fencing Ltd | Administrative & support | 2020 |
| Robert Dutton Design & Build Limited | Construction | 2012 |
| Robert Lunn & Lowth LLP | | 2016 |
| Robert Wischhusen-Hayes Limited | Arts & recreation | 2019 |
| Robotdance Ltd | Information & communication | 2025 |
| Robrit Limited | Other services | 2017 |
| Robrit Translations Limited | Professional & scientific | 2020 |
| Rocket Visual Solutions Limited | Information & communication | 2015 |