| RBR Rental Ltd | Administrative & support | 2025 |
| Rbvk Group Ltd | Financial services | 2018 |
| Rbzr Property Services Ltd | Real estate | 2023 |
| RD Hair Salon Ltd | Other services | 2022 |
| RD Teck Ltd | Transport & logistics | 2019 |
| Rdba Building Ltd | Construction | 2019 |
| RDL Future Train Ltd | Education | 2021 |
| Rdrv IT Solutions Limited | Information & communication | 2019 |
| Re'Joes Foods Ltd | Hospitality | 2025 |
| Reach Curriculum Projects Limited | Education | 2021 |
| Reach Schools | Education | 2011 |
| Readycarz Ltd | Transport & logistics | 2022 |
| Real Star Properties Ltd | Real estate | 2020 |
| Realty Union Limited | Administrative & support | 2016 |
| Reassure Lettings Limited | Wholesale & retail | 2024 |
| Recent Sports Wears Ltd | Manufacturing | 2023 |
| Rech Solutions Ltd | Information & communication | 2015 |
| Rector Solutions Ltd | Information & communication | 2013 |
| Red Fitness Limited | Arts & recreation | 2021 |
| Reddy Investments Ltd | Construction | 2019 |
| Redlands Properties Ltd | Real estate | 2024 |
| Redleaves Properties Limited | Real estate | 2026 |
| Refined Care Limited | Health & social care | 2021 |
| Reflective Praxis Psychology Ltd | Professional & scientific | 2021 |
| Refresh Build and Maintain Ltd | Construction | 2016 |
| Regal Accountants Limited | Professional & scientific | 2014 |
| Regal Bridge Education Ltd | Education | 2025 |
| Regal Skip Hire Ltd | Water & waste | 2016 |
| Regal Sushi Limited | Hospitality | 2025 |
| Regalcart Ltd | Wholesale & retail | 2025 |
| Regents Food & Wine Limited | Wholesale & retail | 2015 |
| Reghenzani Ltd | Professional & scientific | 2025 |
| Rehan Logi Ltd | Transport & logistics | 2026 |
| Rehena Enterprise Ltd | Wholesale & retail | 2018 |
| Rehmans Tech Ltd | Wholesale & retail | 2021 |
| Remaak Ltd | Administrative & support | 2017 |
| Renata Nunes Therapist Ltd | Health & social care | 2020 |
| Rent for Less (London) Ltd | Real estate | 2026 |
| Reon Construction Ltd. | Construction | 2016 |
| Repostopsy Ltd | Information & communication | 2025 |
| Residential Refurbishment Ltd | Construction | 2013 |
| Resigenix Ltd | Professional & scientific | 2024 |
| Retro Collections Ltd | Wholesale & retail | 2020 |
| Revive Treatments LLP | | 2025 |
| Rewa Builders Ltd | Construction | 2020 |
| Reynolds Care Services Ltd | Health & social care | 2023 |
| Rezalin Estate Limited | Real estate | 2023 |
| RFC Northgate Ltd | Hospitality | 2025 |
| RG Residential Homes Ltd | Real estate | 2021 |
| RG Ride Ltd | Transport & logistics | 2025 |
| RGE Works Ltd | Construction | 2025 |
| RGR Contractors Ltd | Construction | 2022 |
| RI Trendy Kids&Mums Ltd | Wholesale & retail | 2020 |
| Riaz Autocare Ltd | Wholesale & retail | 2025 |
| Ribbon and Blooms Ltd | Wholesale & retail | 2020 |
| Ribonss Holdings Ltd | Real estate | 2016 |
| Rich Clement Creative Ltd | Information & communication | 2013 |
| Rich KID Studios Ltd | Information & communication | 2026 |
| Richardsons of Feltham Limited | Wholesale & retail | 2016 |
| Richmond Borough Property Maintenance Limited | Construction | 2025 |
| Rici Skin Glow Limited | Health & social care | 2025 |
| Rico Secured Ltd | Administrative & support | 2025 |
| Ridge & Rafter Roofing Ltd | Construction | 2024 |
| Rifga Travel and Home Solutions Ltd | Real estate | 2023 |
| Riga AI Ltd | Information & communication | 2025 |
| RIGHT4U Consultancy Limited | Education | 2011 |
| Rima Solutions Limited | Professional & scientific | 2018 |
| Rise International Management and Consultancy Limited | Information & communication | 2023 |
| Rise International School of Education Ltd | Education | 2016 |
| Rise MDS Ltd | Transport & logistics | 2025 |
| Rising Sun Productions Limited | Professional & scientific | 2019 |
| Rising UP Consulting Limited | Professional & scientific | 2024 |
| Ritik Ltd | Wholesale & retail | 2025 |
| Ritu Luxe Studio Ltd | Other services | 2026 |
| Ritu Sharma Ltd | Other services | 2021 |
| RIV Worldwide Ltd | Wholesale & retail | 2010 |
| Riverside Building and Roofing Ltd | Professional & scientific | 2024 |
| Riverside Van Hire (West London) Limited | Administrative & support | 2011 |
| Riverside Vineyard Christian Fellowship | Health & social care | 1992 |
| RJ BAL Transport Ltd. | Transport & logistics | 2023 |
| RJ Kemsal Constructions Ltd | Construction | 2017 |
| RJK Estates Limited | Real estate | 2025 |
| RK Technologies Limited | Information & communication | 2012 |
| Rkgb Ltd | Real estate | 2023 |
| RLC Construction Ltd | Construction | 2023 |
| RM Property and Investments Ltd | Real estate | 2022 |
| RM Sobol Ltd | Construction | 2022 |
| RM Solutions (Bradford) Ltd | Information & communication | 2016 |
| RMA 69 Ltd | Manufacturing | 2024 |
| Rmas Properties Ltd | Real estate | 2025 |
| RMS Systems Ltd | Information & communication | 2026 |
| RMZ Investment Ltd | Real estate | 2023 |
| RMZ Trading Ltd | Real estate | 2023 |
| RN Motors London Ltd | Wholesale & retail | 2021 |
| RNR Apparel Ltd | Wholesale & retail | 2019 |
| Ro-J LT Ltd | Information & communication | 2018 |
| Robert Decor Ltd | Wholesale & retail | 2025 |
| Robert'C Construction Ltd | Construction | 2019 |
| Roberts Hunt Estate Agents Limited | Real estate | 2015 |
| Rockall Datoz Ltd | Information & communication | 2019 |