| Red Kite Endeavour Ltd | Real estate | 2025 |
| Red Sea Relax Ltd | Administrative & support | 2017 |
| Redatum Ltd | Professional & scientific | 2011 |
| Rednal Combat Ltd | Arts & recreation | 2019 |
| Redrosegroup Limited | Wholesale & retail | 2017 |
| Reed Tech Ltd | Manufacturing | 2018 |
| Reeves & Co Supply Management Ltd | Construction | 2023 |
| Regalcourt Corporate Services Limited | Professional & scientific | 1994 |
| Regalcourt Hotels Limited | Hospitality | 2007 |
| Regent Cinema Limited | Arts & recreation | 2019 |
| Reil Homes Limited | Construction | 2012 |
| Reliant (UK) Ltd | Information & communication | 2013 |
| Reliant Telecommunications Limited | Information & communication | 2025 |
| Republic Wood Supplies Ltd | Wholesale & retail | 2024 |
| Resolvability Ltd | Professional & scientific | 2013 |
| Retiro Ltd | Real estate | 2021 |
| Revolution Bike Park Limited | Arts & recreation | 2011 |
| Revs Carpentry and Joinery Ltd | Construction | 2020 |
| RG Patmore Limited | Information & communication | 2012 |
| Rhilol Limited | Hospitality | 2017 |
| Rhino Court (Utopia) Limited | Real estate | 2018 |
| Rhys Vaughan Limited | Financial services | 2022 |
| RIBBONS4U Limited | Wholesale & retail | 2024 |
| Richard B Heath Ltd | Professional & scientific | 2013 |
| Richard Lumby Ltd | Professional & scientific | 2018 |
| Ride to the Wall | Administrative & support | 2011 |
| Ridgway Holdings International Ltd | Financial services | 1996 |
| Ridgway Holdings Limited | Financial services | 2021 |
| Ridgway Leasing Ltd | Extraterritorial | 2005 |
| Ridgway Properties Ltd | Real estate | 1998 |
| Rigel 369 Ltd | Arts & recreation | 2022 |
| Ripl Media Ltd | Information & communication | 2021 |
| Riverside Foods Limited | Extraterritorial | 2015 |
| Riverside Holdings Limited | Wholesale & retail | 1984 |
| RJ Septic Tanks Ltd | Water & waste | 2021 |
| Rjec Accountancy Limited | Professional & scientific | 2026 |
| RLH Quality Ltd | Professional & scientific | 2023 |
| RMT Automotive Services Limited | Manufacturing | 2009 |
| RMT Developments Limited | Education | 2020 |
| ROB Gore Purchasing Services Limited | Other services | 2007 |
| Robins & Sunflowers Ltd | Health & social care | 2021 |
| Robinson Advisory Ltd | Professional & scientific | 2026 |
| Roche Security Limited | Extraterritorial | 2022 |
| Roche Systems Limited | Construction | 2000 |
| Rock Bottom Designer Clearance Shops Limited | Wholesale & retail | 2004 |
| Rock Outdoor Living Limited | Wholesale & retail | 2023 |
| Rocking Horse Media Limited | Arts & recreation | 2015 |
| Rogers Construction Ltd | Construction | 2022 |
| Rogers Graphics Limited | Professional & scientific | 2024 |
| Romansbath Ltd | Other services | 2025 |
| RON Saunders Limited | Real estate | 1991 |
| Roofing & Salvage Depot Ltd | Wholesale & retail | 2008 |
| Rosco Holdings Limited | Financial services | 2023 |
| Rovi Engineering Ltd | Manufacturing | 2024 |
| Rowen Tree Care Limited | Administrative & support | 2003 |
| Royale Property Care Limited | Construction | 2025 |
| RPC (Hotels) Limited | Hospitality | 2019 |
| RS CNC Limited | Manufacturing | 2015 |
| Rttw Services Limited | Administrative & support | 2011 |
| Rueffler Ltd | Construction | 2019 |
| Rural Clicks Ltd | Professional & scientific | 2023 |
| Rural Hotels Limited | Hospitality | 2005 |
| Ruscoe Holdings Ltd | Real estate | 2017 |
| Russet Advisory Ltd | Professional & scientific | 2026 |
| Ruvi Star Limited | Hospitality | 2025 |
| S & G Buyers & Estimators Ltd | Wholesale & retail | 2006 |
| S E S Jones Joinery Ltd | Manufacturing | 2020 |
| S&M Vapes Limited | Wholesale & retail | 2014 |
| S.Lawrence & SON Limited | Real estate | 1954 |
| S.P.Cladding Ltd | Construction | 2007 |
| SA Flying Training Ltd | Administrative & support | 2023 |
| Saas-Ecommerce Limited | Information & communication | 2022 |
| Sadiaa Limited | Wholesale & retail | 2023 |
| Safeguard Fire and Security Ltd | Construction | 2010 |
| Safety Training Portal Ltd | Professional & scientific | 2018 |
| Safia Mini Market Ltd | Wholesale & retail | 2024 |
| Salopian Orthopaedics Limited | Professional & scientific | 2016 |
| Salt Solutions (Consultancy) Limited | Professional & scientific | 2019 |
| Samantha Harry Holding Co Ltd | Real estate | 2026 |
| Sanda Creative Design Limited | Information & communication | 2013 |
| Sandford Assets (ST Martins) Ltd | Administrative & support | 1997 |
| Sandford Assets Limited | Financial services | 2012 |
| Sandford Investments Limited | Real estate | 2013 |
| Sandwell Supply Nursery Services Limited | Education | 2009 |
| Sarcantee Limited | Wholesale & retail | 2024 |
| Sarkate Securities Limited | Real estate | 2001 |
| Savanna Investments Limited | Construction | 2019 |
| Sayers Homes Ltd | Construction | 2018 |
| Sayers Property Solutions Ltd | Real estate | 2025 |
| SB4CONSTRUCTION Ltd | Construction | 2023 |
| SBF Energy Ltd | Manufacturing | 2023 |
| Schools Christian Worker Project | Education | 1998 |
| Scott Hester the Unicorn PUB Ltd | Hospitality | 2025 |
| Scott Ruscoe Financial Goals Ltd | Financial services | 2025 |
| Scrumptious PIG Ltd | Professional & scientific | 2020 |
| Seafeast Limited | Professional & scientific | 1983 |
| Seaward Retreats Ltd | Real estate | 2021 |
| Secret Sanctuary Massage Ltd | Other services | 2026 |
| Sector 39 Limited | Education | 2014 |
| Seddon Haulage Ltd | Transport & logistics | 2004 |