| Russell Court (Wembley) Management Company Limited | Households | 1972 |
| Russell Evans Rahaman Limited | Professional & scientific | 2019 |
| Russell Tutoring Ltd | Education | 2025 |
| Ruveo Ltd | Wholesale & retail | 2020 |
| Ruveo Properties Ltd | Real estate | 2020 |
| Ruze Aviation Ltd | Other services | 2022 |
| RV Consultant Services Ltd | Information & communication | 2024 |
| RVE Capital (One) Limited | Real estate | 2022 |
| RVE Capital (Two) Limited | Real estate | 2022 |
| RVF Academy CIC | Information & communication | 2025 |
| RVL Buildings Ltd | Construction | 2023 |
| RVM FIX Limited | Construction | 2015 |
| RVN Willows Properties Ltd | Real estate | 2022 |
| RVR Pro Builders Ltd | Construction | 2018 |
| Rvrichardsandco Limited | Transport & logistics | 2023 |
| Rvvp Ltd | Financial services | 2022 |
| Rworld Express UK Limited | Transport & logistics | 2019 |
| RWZ Ltd | Administrative & support | 2025 |
| Ryaans Ltd | Professional & scientific | 2020 |
| Ryan Consultants Ltd | Construction | 2023 |
| Ryenote Productions Ltd | Arts & recreation | 2014 |
| Ryii Limited | Other services | 2022 |
| RYN Enterprise Limited | Professional & scientific | 2023 |
| Rytte Ltd | Manufacturing | 2022 |
| Ryujin Limited | Hospitality | 2024 |
| Ryujin TECH1 Ltd | Wholesale & retail | 2025 |
| Ryzen Nutrition Ltd | Hospitality | 2026 |
| S & H Express Ltd | Transport & logistics | 2025 |
| S & J Angels Limited | Other services | 2019 |
| S & J Sweets & Savouries Limited | Manufacturing | 2018 |
| S & M Capital Limited | Real estate | 2017 |
| S & N Services (Harrow) Limited | Professional & scientific | 2020 |
| S & P Naik Properties Limited | Real estate | 2021 |
| S & V Sales Limited | Wholesale & retail | 2025 |
| S a Lounge Limited | Hospitality | 2026 |
| S a Properties Ltd | Real estate | 2025 |
| S and M Plumbing Ltd | Construction | 2026 |
| S Arafat Limited | Professional & scientific | 2025 |
| S I Motors Ltd | Wholesale & retail | 2011 |
| S K Distributors Ltd | Transport & logistics | 2019 |
| S K Homes Investment Limited | Real estate | 2019 |
| S K I Associates Limited | Financial services | 2003 |
| S R Patel Stores Ltd | Wholesale & retail | 2010 |
| S S a Trading Limited | Construction | 2025 |
| S S Convenience Distribution Limited | Wholesale & retail | 2006 |
| S Shafaq Limited | Other services | 2019 |
| S&A Multistore Ltd | Wholesale & retail | 2023 |
| S&A Worldwide Ltd | Professional & scientific | 2025 |
| S&D Global Production Ltd | Hospitality | 2022 |
| S&K Properties Rental Ltd | Hospitality | 2025 |
| S&R Projects Development Ltd | Construction | 2025 |
| S&S Consulting Limited | Professional & scientific | 2011 |
| S&S Housing Services Limited | Real estate | 2025 |
| S&S Property Group Ltd | Real estate | 2021 |
| S&T Builders Service Ltd | Construction | 2019 |
| S&V Investment Group Ltd | Real estate | 2021 |
| S,D and K,R Properties Limited | Real estate | 2025 |
| S. Barot Consultancy Limited | Administrative & support | 2020 |
| S. J. R Solutions Limited | Administrative & support | 2019 |
| S. Marotta Limited | Construction | 1988 |
| S.J. Enterprises & Development Ltd | Construction | 2025 |
| S.M.A.R.T. Gloves Cleaning Ltd | Construction | 2014 |
| S.O.D.K. Holdings Limited | Financial services | 2023 |
| S.O.U.L. Building Ltd | Construction | 2023 |
| S.R Jewellery Work Shop Ltd | Manufacturing | 2015 |
| S.Rahmatzai & Co. Ltd | Wholesale & retail | 2026 |
| S.W.Chemilab Ltd | Wholesale & retail | 2023 |
| S2 DAN Ltd | Real estate | 2015 |
| S2 DAN Properties Ltd | Real estate | 2016 |
| S3A Group Ltd | Health & social care | 2021 |
| S5 Maintenance UK Ltd | Administrative & support | 2018 |
| S5 Procare Ltd | Administrative & support | 2024 |
| S5 Services Limited | Administrative & support | 2025 |
| S5 Stationeries UK Ltd | Wholesale & retail | 2020 |
| SA Retail (Ruislip) Ltd | Wholesale & retail | 2010 |
| SAA PVT Ltd | Hospitality | 2026 |
| Saaf Housing Ltd | Real estate | 2020 |
| Saaya Beauty Limited | Other services | 2018 |
| Saaye Supermarket Ltd | Wholesale & retail | 2025 |
| SABA.Q8 Limited | Real estate | 2023 |
| Sable Desk Ltd | Administrative & support | 2026 |
| Sabziya Ltd | Wholesale & retail | 2025 |
| Sachit Autos Ltd | Wholesale & retail | 2021 |
| Sachla Ltd | Real estate | 2018 |
| Saco Consulting Limited | Professional & scientific | 2015 |
| Sadhaura Holdings Ltd | Real estate | 2021 |
| Sadie London Ltd | Wholesale & retail | 2023 |
| Sadra Properties Limited | Real estate | 2017 |
| Saeed Davis Carpentry Ltd | Manufacturing | 2024 |
| Saeed Online Limited | Wholesale & retail | 2025 |
| Safa Constructions Ltd | Construction | 2017 |
| Safa Design and Construction Limited | Construction | 2021 |
| Safe Rentals Limited | Real estate | 2003 |
| Safe Renting Ltd | Real estate | 2024 |
| Safe Sedate Limited | Health & social care | 2026 |
| Safeclean Thornlake Limited | Administrative & support | 2013 |
| Safer Minicab Limited | Information & communication | 2011 |
| Safera Ltd | Wholesale & retail | 2025 |
| Safestand Limited | Construction | 2004 |
| Safetyfirstaidproducts Ltd | Manufacturing | 2021 |