| Ronren Consulting Ltd | Professional & scientific | 2020 |
| Roofing Direct (Surrey) Ltd | Construction | 2023 |
| Roofing Solution SW Limited | Construction | 2026 |
| Roofing Solutions (SW) Ltd | Construction | 2017 |
| Roofwise Roofing and Building Services Limited | Construction | 2025 |
| Room 2 Improve Ltd | Construction | 2012 |
| Rooms to Breathe Limited | Real estate | 2026 |
| Roomsdirect Ltd | Real estate | 2019 |
| Roopadesigns Ltd | Professional & scientific | 2016 |
| Root&Rise Hypnotherapy Limited | Health & social care | 2025 |
| Roots Scenery and Carpentry Limited | Arts & recreation | 2014 |
| Roro 77 Ltd | Construction | 2022 |
| Rosa Mistica Ltd | Health & social care | 2015 |
| Rose Contractor Services Limited | Construction | 2010 |
| Roseacre Close Management Company Limited | Households | 2017 |
| Rosebery Flooring Ltd | Construction | 2023 |
| Rosebery PTY Ltd | Real estate | 2020 |
| Rosehill Cars Ltd | Other services | 2016 |
| Rosehill Services Limited | Real estate | 2020 |
| Roselyn Cottage Ltd | Real estate | 2020 |
| Rosemil Care Limited | Health & social care | 2023 |
| Rosestock Limited | Other services | 2003 |
| Rosetta Ltd. | Information & communication | 2017 |
| Rosevelley Cleaning Ltd | Administrative & support | 2026 |
| Ross Roberts Roofing Ltd | Construction | 2017 |
| Rosylea Cafe (Wimbledon) Ltd | Hospitality | 2011 |
| Rotavele Group Ltd | Manufacturing | 2025 |
| Rotavele UK Ltd | Construction | 2019 |
| Roti Masters Ltd | Hospitality | 2026 |
| Rougemont Solutions Limited | Professional & scientific | 2011 |
| Rougemont West Malling Management Limited | Households | 2025 |
| Round Table Capital Ltd | Transport & logistics | 2023 |
| Rowlen Boiler Services Ltd | Construction | 2016 |
| Rowlen Developments Ltd | Real estate | 2026 |
| Roxy's Tasty Kitchen Ltd | Hospitality | 2023 |
| Rozisenchantment Ltd | Other services | 2019 |
| RP Chauffeur Services Limited | Administrative & support | 2011 |
| RP Cosmetics Limited | Health & social care | 2024 |
| RPC Property Limited | Real estate | 2022 |
| RPJ International Consulting Limited | Information & communication | 2001 |
| Rpmg Medicals Limited | Health & social care | 2009 |
| Rpsb Enterprises Ltd | Real estate | 2023 |
| RR BMJ Properties Ltd | Real estate | 2024 |
| RRD Services Ltd | Construction | 2019 |
| RRR Prism & Co. Ltd | Information & communication | 2017 |
| RRT Electrical Services Limited | Construction | 2026 |
| Rruut Limited | Wholesale & retail | 2025 |
| RS Accountancy Services (PVT) Ltd | Professional & scientific | 2019 |
| RS Amini Ltd | Real estate | 2024 |
| RS Amini Ventures Ltd | Wholesale & retail | 2026 |
| RS Bookkeeping Services (PVT) Ltd | Health & social care | 2021 |
| RS Cars Gatwick Ltd | Transport & logistics | 2018 |
| RS Concept Ltd | Construction | 2025 |
| RS Medical PAS Ltd | Health & social care | 2023 |
| RS Stairs Ltd | Construction | 2025 |
| RS Technosoft Limited | Information & communication | 2016 |
| RS Zone UK Limited | Wholesale & retail | 2018 |
| RSC Partnership Limited | Information & communication | 1990 |
| RSL Power Limited | Manufacturing | 2025 |
| Rspm Limited | Real estate | 2020 |
| RSR Group Ltd | Construction | 2019 |
| RTC New & Used Tyres Ltd | Wholesale & retail | 2015 |
| RTF Consultants Limited | Information & communication | 2023 |
| RTP Property Investments Limited | Real estate | 2024 |
| RTY Accountancy Services Ltd | Professional & scientific | 2023 |
| Ruanix Appliance Care Ltd | Other services | 2026 |
| Ruby Chan Consultancy Limited | Professional & scientific | 2021 |
| Rudra SIX Limited | Wholesale & retail | 2025 |
| Ruff House Management Limited | Households | 1982 |
| Rugveda Solutions Limited | Information & communication | 2009 |
| Ruiz Actuarial Solutions Limited | Information & communication | 2015 |
| Rume Studio Limited | Information & communication | 2025 |
| Run Social Ltd | Arts & recreation | 2023 |
| Rupert Oliver Renovations Ltd | Construction | 2023 |
| Rush Shae Ltd | Real estate | 2020 |
| Rushlight Mews Management Company Limited | Households | 2016 |
| Rusin Tonev Ltd | Construction | 2012 |
| Russell & George Limited | Information & communication | 2015 |
| Russell & Maude Ltd | Wholesale & retail | 2021 |
| Russell Associates Ltd | Professional & scientific | 2025 |
| Russell Brothers Ltd | Construction | 2013 |
| Russell Haskins Heating & Plumbing Limited | Construction | 2009 |
| Russell Schrader Productions (UK) Ltd | Arts & recreation | 2025 |
| Russell Site Management Ltd | Other services | 2007 |
| Russell Wall Energy Consulting Limited | Professional & scientific | 2015 |
| Rutland Court (Surrey) Management Company Limited | Real estate | 1986 |
| Rutland House (Sutton) Limited | Health & social care | 2008 |
| Rutland House Care Home Limited | Health & social care | 2006 |
| Ruzfishermonger Limited | Hospitality | 2018 |
| Rvjs Resources Ltd | Professional & scientific | 2018 |
| Ryan Ashley Limited | Information & communication | 2007 |
| Rylands Law Limited | Professional & scientific | 2016 |
| Rymac Surfacing Solutions Ltd | Construction | 2020 |
| Rêve Management Ltd | Information & communication | 2025 |
| S & D Conversions Ltd | Professional & scientific | 2010 |
| S & F Corporate Solutions Limited | Professional & scientific | 2014 |
| S & M Invest Ltd | Construction | 2019 |
| S & R Removals Ltd | Transport & logistics | 2024 |
| S & S Sealants Ltd | Construction | 2018 |
| S a Prime Solutions Ltd | Construction | 2024 |