| Runnable Limited | Information & communication | 2014 |
| Ruozino Home Ltd | Real estate | 2019 |
| Rupesh Ltd | Real estate | 2022 |
| Rushco Limited | Administrative & support | 2007 |
| Rusin Properties Ltd | Real estate | 2021 |
| Ruskin Oriel Property Limited | Real estate | 2026 |
| Ruskita Limited | Construction | 2008 |
| Rusper Consulting Limited | Professional & scientific | 2016 |
| Rusper Property Ltd | Real estate | 2022 |
| Russell Green Limited | Professional & scientific | 2012 |
| Russropa Ltd | Education | 2021 |
| Rustic Cafe and Bistro Ltd | Hospitality | 2023 |
| Rustic Studios Ltd | Information & communication | 2025 |
| Rusticfables Limited | Wholesale & retail | 2025 |
| Ruta Maya Limited | Wholesale & retail | 2023 |
| Ruth Corkin Ltd | Professional & scientific | 2020 |
| Ruthkin Limited | Health & social care | 2012 |
| RV Financial Associates Limited | Administrative & support | 2013 |
| RV Investments (London) Limited | Real estate | 2023 |
| RV Packaging Limited | Wholesale & retail | 2017 |
| RVE Corporate Finance Limited | Professional & scientific | 2019 |
| RW Creative Studios Limited | Professional & scientific | 2012 |
| RW Steel Fabrications Limited | Manufacturing | 2026 |
| RWC Incorporated Limited | Real estate | 2014 |
| RWD Prop Co Ltd | Real estate | 2025 |
| RWK Food LT Ltd | Hospitality | 2024 |
| RWM Kitchens and Electrical Ltd | Construction | 2021 |
| RWP Plumbing Services Ltd | Construction | 2021 |
| RWR 3 LLP | | 2012 |
| RWR Bookkeeping Services Limited | Professional & scientific | 2018 |
| RWS Services Limited | Administrative & support | 2009 |
| RWS Technical Services Limited | Professional & scientific | 2011 |
| RX Farma Limited | Manufacturing | 2000 |
| RXP Limited | Information & communication | 2024 |
| RXS Business Consulting Limited | Professional & scientific | 2014 |
| Ryan Bahadur Ltd | Health & social care | 2023 |
| Ryan Promotions Ltd | Arts & recreation | 2022 |
| Ryan Pyle Productions Limited | Information & communication | 2013 |
| RYB Trans Limited | Transport & logistics | 2019 |
| Rydal Consulting Limited | Wholesale & retail | 2014 |
| Ryder Seed Mews Management Limited | Households | 1997 |
| Rydm Ltd | Education | 2019 |
| Ryker Structures Limited | Construction | 2017 |
| RYN Projects Limited | Wholesale & retail | 2022 |
| Ryte Foods Limited | Manufacturing | 2023 |
| Rytebridge Healthcare Ltd | Health & social care | 2025 |
| Rytebridge Propco Ltd | Health & social care | 2025 |
| RZ Building & Decorating Ltd | Wholesale & retail | 2005 |
| RZ13 Ltd | Professional & scientific | 2025 |
| RZH Holdings Ltd | Financial services | 2021 |
| S & B Decorating Limited | Construction | 2019 |
| S & D Motor Sport Ltd | Wholesale & retail | 2021 |
| S & F Restaurant Limited | Hospitality | 2018 |
| S & F Shafiq Limited | Real estate | 2019 |
| S & I Groundworks & Civils Ltd | Construction | 2025 |
| S & M Pro Cleaning Company Ltd | Administrative & support | 2026 |
| S & T Media Management Limited | Professional & scientific | 2001 |
| S & T Property Care Ltd | Construction | 2005 |
| S & T Property Management Limited | Real estate | 2004 |
| S & V Management Consultancy Ltd | Information & communication | 2019 |
| S a Designer Parfums Limited | Wholesale & retail | 2001 |
| S a P Printing Limited | Manufacturing | 2006 |
| S Aesthetics London Ltd | Other services | 2023 |
| S and J Investments (Delivery Office Southall) Limited | Real estate | 2011 |
| S Bishop Consultancy Ltd | Information & communication | 2022 |
| S D Samuels (Special Projects) Limited | Construction | 2004 |
| S F Hospitality Limited | Hospitality | 2023 |
| S F Tech Management Solutions Ltd | Information & communication | 2023 |
| S Gilmartin Ltd | Real estate | 2021 |
| S J Miller Roofing and Building Services Ltd | Construction | 2026 |
| S Jars Properties Limited | Real estate | 2022 |
| S John Construction Ltd | Construction | 2015 |
| S K Malhi Ltd | Transport & logistics | 2026 |
| S L Motor Traders Limited | Wholesale & retail | 2020 |
| S L Roofing Ltd | Construction | 2017 |
| S Lassen Properties Ltd | Real estate | 2025 |
| S Mahoney Carpentry & Joinery Limited | Construction | 2026 |
| S MAM Healthcare Ltd | Health & social care | 2024 |
| S P L Haulage Contractors Limited | Transport & logistics | 2018 |
| S Taylor ED Psyche Ltd | Health & social care | 2024 |
| S V Care Limited | Health & social care | 2015 |
| S W Carpentry Services Limited | Manufacturing | 2006 |
| S W Electrical Services London Ltd | Construction | 2025 |
| S W European Limited | Transport & logistics | 2010 |
| S&B Plastics Ltd | Other services | 2024 |
| S&D Capital Group Ltd | Real estate | 2026 |
| S&H Motors Ltd | Wholesale & retail | 2020 |
| S&J Asset Holdings Ltd | Real estate | 2024 |
| S&K Property Conversions Limited | Real estate | 2019 |
| S&M Financial Planning Ltd | Financial services | 2019 |
| S&M Medical Limited | Manufacturing | 2002 |
| S&N Service Ltd | Wholesale & retail | 2015 |
| S&N Smart Solutions Ltd | Other services | 2017 |
| S&O Capital Ltd | Financial services | 2019 |
| S&P's Solutions Ltd | Professional & scientific | 2022 |
| S&T Patel Limited | Construction | 2025 |
| S&Z Homes Ltd | Real estate | 2022 |
| S-Mech M S Limited | Manufacturing | 2005 |
| S. & J. Leisure Group Limited | Arts & recreation | 1984 |
| S. B. Jorgensen Ltd | Wholesale & retail | 2009 |