| Rewired Mind Limited | Health & social care | 2025 |
| RGZ Local Operations Ltd | Information & communication | 2026 |
| Richtexcorp Limited | Hospitality | 2025 |
| Rizqenta Ltd | Wholesale & retail | 2025 |
| Rjwj Leasing Limited | Administrative & support | 2024 |
| Rjwj Limited | Agriculture & fishing | 2023 |
| RM Creations Group Ltd | Wholesale & retail | 2025 |
| RMB Consultancy Services Ltd | Information & communication | 2007 |
| RMB Property Lettings Limited | Real estate | 2015 |
| Rmrz Ltd | Information & communication | 2017 |
| Road Ahead Driving School Ltd | Education | 2023 |
| Rosita Ltd | Hospitality | 2009 |
| Rossat Limited | Wholesale & retail | 2018 |
| Rowland Hamilton Limited | Hospitality | 2016 |
| Rubbish Move Ltd | Transport & logistics | 2026 |
| RV Being Ltd | Wholesale & retail | 2025 |
| Rxlogix Corporation Limited | Information & communication | 2022 |
| Ryhnas Limited | Wholesale & retail | 2025 |
| S&D Meshe Visuals Ltd | Information & communication | 2023 |
| S&J Hair Styling Salon Ltd | Other services | 2022 |
| Saifcom E-Commerce Management Limited | Information & communication | 2011 |
| SAM Outlet Ltd | Wholesale & retail | 2025 |
| Samavar Limited | Wholesale & retail | 2024 |
| Samtec IT Solutions Ltd | Information & communication | 2018 |
| Santmar Limited | Wholesale & retail | 2012 |
| SAP Construction Management Ltd | Construction | 2024 |
| Sarim Ltd | Wholesale & retail | 2026 |
| Sbds Construction Ltd | Construction | 2025 |
| Secureid Print Ltd | Wholesale & retail | 2021 |
| Sehgal Enterprises Ltd | Transport & logistics | 2020 |
| Sentinelshield Ltd | Administrative & support | 2026 |
| Service Stor Ltd | Administrative & support | 2025 |
| Shabarz Kebabish Limited | Hospitality | 2016 |
| Shadowtree Forestry Limited | Agriculture & fishing | 2025 |
| Sharleez Power Electrics Ltd | Construction | 2021 |
| Shelter Group Ltd | Administrative & support | 2022 |
| Shipmate Ltd | Wholesale & retail | 2023 |
| Shop Memora Ltd | Wholesale & retail | 2021 |
| Shuttle Force CIC | Arts & recreation | 2025 |
| SIA Communications Ltd | Professional & scientific | 2017 |
| Signature Kitchens London Limited | Wholesale & retail | 2017 |
| Signature Security Ltd | Administrative & support | 2022 |
| Signzart Ltd | Wholesale & retail | 2026 |
| Simple Estates LDN Ltd | Real estate | 2018 |
| Sindra Ltd | Information & communication | 2021 |
| Sinergia Security & FM Ltd | Administrative & support | 2023 |
| SJ Bowdery Management Limited | Professional & scientific | 2010 |
| SJS Awareness UK Ltd | Health & social care | 2010 |
| Skin Vital Food Limited | Manufacturing | 2025 |
| SM Premier Luxury Chauffeurs Ltd | Transport & logistics | 2026 |
| Smartgadgets LED Ltd | Wholesale & retail | 2026 |
| SMM Logics Limited | Wholesale & retail | 2025 |
| Smokestack Systems Ltd | Information & communication | 2026 |
| Sociocom Industries Limited | Wholesale & retail | 2025 |
| Sohal Shopfronts & Shutter Ltd | Manufacturing | 2020 |
| Sookra Limited | Professional & scientific | 2021 |
| South Weald Radiology Limited | Health & social care | 2015 |
| Space Soul Ltd | Financial services | 2023 |
| Spectra PVT Ltd | Wholesale & retail | 2020 |
| Spendingster Ltd | Wholesale & retail | 2025 |
| Splash Rides Ltd | Information & communication | 2026 |
| SS A2B Deliveries Ltd | Transport & logistics | 2020 |
| Stockserves Ltd | Wholesale & retail | 2020 |
| Storvault Ltd | Wholesale & retail | 2026 |
| SUI Generis LEX Solutions Ltd | Professional & scientific | 2020 |
| Suiyet Ltd | Wholesale & retail | 2024 |
| Sukh Stairscase London Ltd | Construction | 2024 |
| Sukhera Logistics Ltd | Transport & logistics | 2024 |
| Sunshoos Accountants Limited | Professional & scientific | 2021 |
| Supium Ltd | Information & communication | 2019 |
| Swan Shipping Company Limited | Transport & logistics | 2007 |
| Swift Alert Services Ltd | Information & communication | 2020 |
| Swift Estates & Project Management Services Limited | Real estate | 2018 |
| Swifttelco Ltd | Wholesale & retail | 2025 |
| Sybil Digital Solutions Limited | Information & communication | 2026 |
| Symantronix IT Consultancy Limited | Information & communication | 2021 |
| Symba Renewable Energy Limited | Information & communication | 1999 |
| Synoware Technologies Ltd | Information & communication | 2013 |
| T.D.Electrical Design Ltd | Professional & scientific | 2016 |
| Tamer Mater Ltd | Wholesale & retail | 2025 |
| Tamyuksel Ltd | Wholesale & retail | 2022 |
| Tawhab Wellness Ltd | Wholesale & retail | 2021 |
| Teamwork Healthcare Limited | Administrative & support | 2021 |
| Teleweb Communications Ltd | Information & communication | 2026 |
| Temperature Controlled Couriers Ltd | Transport & logistics | 2018 |
| TEO Exterior Cleaning Ltd | Administrative & support | 2026 |
| Tereosamast Ltd | Wholesale & retail | 2022 |
| Texloom Sourcing UK Limited | Wholesale & retail | 2025 |
| Textured Tresses Ltd | Other services | 2020 |
| THE Beautifully Made Company Collective Ltd | Arts & recreation | 2024 |
| THE Clothing Lounge (London) Limited | Wholesale & retail | 2011 |
| THE Consultant Limited | Professional & scientific | 2024 |
| THE Designic UK Limited | Wholesale & retail | 2025 |
| THE Energy Transition Network Ltd | Other services | 2024 |
| THE Hypr Studio Limited | Information & communication | 2026 |
| THE Original BBQ Ltd | Hospitality | 2020 |
| THE Redbridge Respite Care Association | Health & social care | 1990 |
| THE Shopovo Limited | Wholesale & retail | 2025 |
| Therapeutic Reflections Limited | Health & social care | 2020 |
| Therapyway Ltd | Information & communication | 2025 |