| Raeburn Investment Limited | Professional & scientific | 2007 |
| Raeburn/Girtin Freehold Limited | Households | 2000 |
| Raff Electrical Ltd | Wholesale & retail | 2023 |
| Raha Holdings Ltd | Construction | 2017 |
| Rahmani Driving School Ltd | Education | 2026 |
| Rahnama Dental Laboratory Ltd | Manufacturing | 2016 |
| Rahnama Investments Limited | Real estate | 2020 |
| Rainbownet Limited | Real estate | 1998 |
| Rainford Berry Limited | Administrative & support | 2006 |
| Rainford Publishing Ltd | Information & communication | 2022 |
| RAJ Rowan Limited | Hospitality | 2018 |
| Rajan & Athi Limited | Real estate | 2022 |
| Rajmal Ltd | Real estate | 2020 |
| Raleigh Court Management Limited | Households | 2002 |
| Raleigh House Ltd | Health & social care | 2009 |
| Ramesh & Sons Limited | Wholesale & retail | 2020 |
| Ramsuns Limited | Wholesale & retail | 2011 |
| Ranginui Consulting Services Limited | Professional & scientific | 2014 |
| Rani Group Ltd | Real estate | 2021 |
| Rankstone Ltd | Real estate | 2025 |
| Ransara Ltd | Health & social care | 2024 |
| Rapha Consulting Group Ltd | Professional & scientific | 2024 |
| Rashna Ltd | Real estate | 2016 |
| Raval Holdings Ltd | Administrative & support | 2024 |
| Ravians Enterprise Ltd | Real estate | 2019 |
| RAY Estates Ltd | Real estate | 2021 |
| Rcbl Property Services Limited | Construction | 2021 |
| RCP Investments LLP | | 2016 |
| Rdar Construction Ltd | Construction | 2026 |
| RDH Tiling Ltd | Construction | 2026 |
| Re-Sauce Marketing Consultancy Ltd | Professional & scientific | 2020 |
| Rebeca's Nanny Service Ltd | Health & social care | 2026 |
| Rebwr Kalary Limited | Wholesale & retail | 2025 |
| Reclaiming YOU Ltd | Administrative & support | 2025 |
| Red Electrical Services Limited | Construction | 2005 |
| Red Panda Consultancy Ltd | Professional & scientific | 2019 |
| Red-Lodgings Ltd | Real estate | 2011 |
| Reddy & Associates Limited | Professional & scientific | 2025 |
| Reddy Homes Ltd | Real estate | 2023 |
| Redford Management Ltd | Real estate | 2026 |
| Reel Talk Real Action Ltd | Education | 2014 |
| Reeqip Limited | Wholesale & retail | 2025 |
| Reeva Diamond Ltd | Wholesale & retail | 2025 |
| REF Legal Ltd | Professional & scientific | 2020 |
| Refined Dating Ltd | Education | 2025 |
| Regal Construction and Renovation Limited | Construction | 2024 |
| Regal Glow Cleaning Ltd | Administrative & support | 2025 |
| Regal Marketing Solutions Limited | Administrative & support | 2013 |
| Regal Realty Ltd | Real estate | 2017 |
| Regal Revolutions Limited | Wholesale & retail | 2024 |
| Regal Supported Living Ltd | Public administration | 2022 |
| Regbox Limited | Information & communication | 2010 |
| Regenworks Ltd | Real estate | 2024 |
| Regu Medical Services Limited | Health & social care | 2013 |
| Regweb Limited | Information & communication | 2010 |
| Rekovri Limited | Arts & recreation | 2025 |
| Relish Media Recruitment Ltd | Administrative & support | 2007 |
| Rellford Medical Limited | Professional & scientific | 1986 |
| Reloc Ltd | Water & waste | 2025 |
| Reloop Studio Ltd | Professional & scientific | 2022 |
| Remotely Covered Limited | Professional & scientific | 2026 |
| Renaissance Infotech Limited | Information & communication | 2011 |
| Rendel Education Limited | Education | 2017 |
| Renfini Ltd | Wholesale & retail | 2025 |
| Rent and Run Limited | Administrative & support | 2020 |
| RENT2RENT Ventures Ltd | Real estate | 2024 |
| Repeat Partners Ltd | Information & communication | 2018 |
| Requis UK Limited | Other services | 2021 |
| Resculpt Ltd | Arts & recreation | 2022 |
| Resculpt Studios Ltd | Arts & recreation | 2025 |
| Resolution Square Ltd | Information & communication | 2011 |
| Resource Reinvent Ltd | Administrative & support | 2022 |
| Restmor Investments Ltd | Financial services | 2023 |
| Restoration Stone Carving Limited | Manufacturing | 2019 |
| Restoreduk Ltd | Wholesale & retail | 2024 |
| Resumption Care Ltd | Health & social care | 2023 |
| Rethya Ltd | Construction | 2024 |
| Retjim Properties Limited | Real estate | 2016 |
| Revive Auto Innovations (Surrey North) Ltd | Wholesale & retail | 2007 |
| Revive Automotive Detailing Ltd | Wholesale & retail | 2025 |
| Revive-Vsg Limited | Education | 2020 |
| Revoky Ltd | Wholesale & retail | 2026 |
| Reyansh Corporate Ltd | Hospitality | 2025 |
| RFC Services Ltd | Construction | 2021 |
| RGE Firesec Limited | Professional & scientific | 2010 |
| RH Strategic Finance Ltd | Professional & scientific | 2026 |
| RIA Generics Limited | Wholesale & retail | 1999 |
| Ricambio Limited | Wholesale & retail | 1970 |
| Richard Bell Electrical Installations Limited | Construction | 2010 |
| Richard Bell Electrical Services Ltd | Construction | 2020 |
| Richmond Capital Ltd | Real estate | 2021 |
| Ridhi Technologies Limited | Information & communication | 2010 |
| Rigs Properties Ltd | Real estate | 2022 |
| Rijushan Ltd | Real estate | 2020 |
| Rind Properties Ltd | Households | 2024 |
| Ringr Ltd | Information & communication | 2026 |
| RIO Prime Solutions Ltd | Administrative & support | 2015 |
| Rise School of Excellence Ltd | Education | 2025 |
| Risk Management Trading Limited | Financial services | 2006 |
| Riva Blooms Ltd | Wholesale & retail | 2025 |