| SUL Services Ltd | Construction | 2015 |
| Sulem Ltd | Wholesale & retail | 2023 |
| Suleyman Properties Limited | Real estate | 2024 |
| Sullimer Properties Ltd | Real estate | 2017 |
| Sultan Concrete Services Limited | Construction | 2023 |
| Sultan Doner Kebab Ltd | Hospitality | 2024 |
| Sultan Fashion Ltd | Wholesale & retail | 2017 |
| Sultan Food & Events Ltd | Hospitality | 2019 |
| Sultana's Solutions Limited | Education | 2020 |
| Sulym Ltd | Transport & logistics | 2025 |
| SUM Car Rental Ltd | Administrative & support | 2014 |
| Suma News Limited | Construction | 2008 |
| Sumal Property Management Limited | Real estate | 2019 |
| Sumeel Smiles Ltd | Health & social care | 2013 |
| SUMI23 Ltd | Health & social care | 2026 |
| Sumit Design Ltd | Construction | 2025 |
| Sumit Ltd | Construction | 2026 |
| Sumitomo Investments Ltd | Real estate | 2021 |
| Sumittcart Trading Ltd | Wholesale & retail | 2026 |
| Summer Services Group Ltd | Construction | 2024 |
| Summercare Group Limited | Health & social care | 2026 |
| Summercare Limited | Health & social care | 1997 |
| Summerslondon Limited | Wholesale & retail | 2026 |
| Summit Bazaar Ltd | Wholesale & retail | 2025 |
| Summit Group London Developments Ltd | Real estate | 2023 |
| Summit Group London Ltd | Financial services | 2023 |
| Summit of Barclay Ltd | Real estate | 2025 |
| Sumptuous Food Ltd | Manufacturing | 2020 |
| Sumzz Medics Ltd | Health & social care | 2012 |
| Sun & MO Creative AI Ltd | Information & communication | 2026 |
| Sun Bright (London) Ltd | Real estate | 2023 |
| Sun Caterers Limited | Hospitality | 2019 |
| Sun K9 Security Limited | Administrative & support | 2023 |
| Sun Light (England) Ltd | Real estate | 2016 |
| Sun Managed Services UK Limited | Professional & scientific | 2019 |
| Sun Shine (Ilford) LLP | | 2016 |
| Sun TAW PUB Co Ltd | Hospitality | 2018 |
| Sun Traders Ltd | Wholesale & retail | 2026 |
| Sunakiel Properties Ltd | Real estate | 2018 |
| Sunam Trading Ltd | Hospitality | 2024 |
| Sunash Diamond Limited | Construction | 2020 |
| Sunash Impex and Metals Limited | Real estate | 2022 |
| Sunbirth (Turnstone) Limited | Construction | 2018 |
| Sunbloom Energy Limited | Construction | 2026 |
| Sundara Homes Limited | Real estate | 2026 |
| Sunday AGY Ltd | Administrative & support | 2023 |
| Sunday Infotech Private Limited | Information & communication | 2024 |
| Sundreams Services Limited | Real estate | 2023 |
| Sunflower Enterprises Limited | Wholesale & retail | 2020 |
| Sungate Support Services Ltd | Information & communication | 2015 |
| Suninfotec Ltd | Information & communication | 2022 |
| Sunline Construction Ltd | Construction | 2025 |
| Sunlyn Limited | Wholesale & retail | 2001 |
| Sunman International Ltd | Wholesale & retail | 2025 |
| Sunmeet Properties Ltd | Real estate | 2025 |
| Sunny Builders Limited | Construction | 2012 |
| Sunny Day Films Limited | Information & communication | 2014 |
| Sunny Eco Homes Limited | Households | 2007 |
| Sunny Kids Shine Ltd | Education | 2024 |
| Sunny Prestige and Management Limited | Transport & logistics | 2014 |
| Sunny Real Estate Ltd | Real estate | 2024 |
| Sunnygone 2024 Ltd | Real estate | 2022 |
| Sunnyman Limited | Construction | 2017 |
| Sunnyskyworld Ltd | Wholesale & retail | 2024 |
| Sunpal Solutions Limited | Professional & scientific | 2014 |
| Sunrise Abode Limited | Real estate | 2023 |
| Sunrise Capital Consultants Ltd | Financial services | 2024 |
| Sunrise Deliveries and Tailoring Ltd | Administrative & support | 2025 |
| Sunrise Interpreters Ltd | Professional & scientific | 2025 |
| Sunshine Design & Build Ltd | Construction | 2025 |
| Sunshine Food & Wine Ltd | Wholesale & retail | 2008 |
| Sunshine Home Investments Ltd | Real estate | 2024 |
| Sunstone Care Services Limited | Extraterritorial | 2021 |
| Suntech Wholesale Ltd | Wholesale & retail | 2022 |
| Sunu PAY Limited | Financial services | 2025 |
| Supaeasy Supplies Ltd | Wholesale & retail | 2025 |
| Supapet Limited | Wholesale & retail | 2002 |
| Super A2Z Consultancy Ltd | Professional & scientific | 2025 |
| Super Carz Ltd | Wholesale & retail | 2025 |
| Super Casa I Ltd | Other services | 2022 |
| Super Construct Daniel Ltd | Construction | 2019 |
| Super Deep Clean Ltd | Administrative & support | 2026 |
| Super Destinations Limited | Administrative & support | 2012 |
| Super Euro Plus Ltd | Wholesale & retail | 2021 |
| Super Events Ltd | Other services | 2025 |
| Super Fags & Mags Ltd | Wholesale & retail | 2019 |
| Super Gads Ltd | Wholesale & retail | 2014 |
| Super K Enterprises Ltd. | Mining & quarrying | 2012 |
| Super Kiddies Academy Ltd | Health & social care | 2026 |
| Super Kratos Limited | Hospitality | 2025 |
| Super Nails Limited | Other services | 2016 |
| Super PAK Crown Ltd | Construction | 2025 |
| Super Quick Supplies Ltd | Wholesale & retail | 2026 |
| Super SEN Staffing Limited | Administrative & support | 2026 |
| Super Slimes Ltd | Wholesale & retail | 2025 |
| Super Sterling Ltd | Administrative & support | 2017 |
| Superb Tuition Ltd | Education | 2021 |
| Supercar Service London Ltd | Wholesale & retail | 2023 |
| Supercar Service Ltd | Wholesale & retail | 2009 |
| Supercar Storage Ltd | Transport & logistics | 2018 |