| Smart L&V Property Ltd | Real estate | 2026 |
| Smart Learners Academy Ltd | Education | 2026 |
| Smart Medical Aesthetics Ltd. | Health & social care | 2022 |
| Smart Move 1 Limited | Real estate | 2013 |
| Smart Network Telecom Ltd | Wholesale & retail | 2025 |
| Smart Outlet Limited | Wholesale & retail | 2025 |
| Smart Plus Ltd | Construction | 2024 |
| Smart Pride Property Ltd | Real estate | 2020 |
| Smart Properties London Ltd | Real estate | 2020 |
| Smart Property Services(Uk) Limited | Construction | 2021 |
| Smart QS House Limited | Professional & scientific | 2023 |
| Smart Redbridge Ltd | Health & social care | 2022 |
| Smart Scholars Academy Limited | Education | 2013 |
| Smart Secure Ltd | Construction | 2014 |
| Smart Skills Ltd | Professional & scientific | 2014 |
| Smart Sparx Ltd | Construction | 2018 |
| Smart Switch Utility Ltd | Professional & scientific | 2025 |
| Smart Tailors Ltd | Manufacturing | 2018 |
| Smart Tech London Ltd | Wholesale & retail | 2011 |
| Smart Techno Systems Ltd | Administrative & support | 2017 |
| Smart Traders London Ltd | Wholesale & retail | 2023 |
| Smart Travelmate (UK) Limited | Information & communication | 2018 |
| Smart Urban Properties Ltd | Construction | 2021 |
| Smart Wears & Go Ltd | Wholesale & retail | 2014 |
| Smartbear Consultant Ltd | Professional & scientific | 2023 |
| Smartbear Trading Ltd | Wholesale & retail | 2021 |
| Smartbid Ltd | Wholesale & retail | 2026 |
| Smartcart Supplies Limited | Wholesale & retail | 2026 |
| Smartcartventures Limited | Wholesale & retail | 2025 |
| Smartcarz Ltd | Wholesale & retail | 2024 |
| Smartchoice Motorz Ltd | Wholesale & retail | 2026 |
| Smartchoice Shopfronts Ltd | Construction | 2018 |
| Smarter Build Ltd | Construction | 2017 |
| Smartheaven Ltd | Real estate | 2025 |
| Smarticle Labs Ltd | Information & communication | 2018 |
| Smartlex Limited | Information & communication | 2025 |
| Smartlink Globel Services Limited | Wholesale & retail | 2023 |
| Smartlinq Ltd | Information & communication | 2025 |
| Smartpicktraders Ltd | Wholesale & retail | 2025 |
| Smartpuff Limited | Wholesale & retail | 2014 |
| Smarts Cyber Solutions Ltd | Information & communication | 2010 |
| Smartsec FM Ltd | Professional & scientific | 2026 |
| Smartshelters Ltd | Information & communication | 2022 |
| Smartstartplus Ltd | Education | 2026 |
| Smartx Tutoring Ltd | Education | 2026 |
| Smarty Pants Trades Limited | Education | 2016 |
| Smartz Designz Ltd | Professional & scientific | 2022 |
| Smasco Limited | Real estate | 2022 |
| Smat Solutions London Limited | Education | 2025 |
| Smav Ltd | Real estate | 2020 |
| Smaya Ltd | Wholesale & retail | 2019 |
| Smaye Beauty Ltd | Wholesale & retail | 2024 |
| SMB Solicitors Limited | Professional & scientific | 2016 |
| SMC Car Sales Limited | Wholesale & retail | 2006 |
| SMC Trading Ltd | Administrative & support | 2015 |
| SME Consultants Limited | Professional & scientific | 2012 |
| SME Utilities Limited | Energy | 2019 |
| Smer Traders Limited | Wholesale & retail | 2025 |
| SMG Lakhan Limited | Professional & scientific | 2022 |
| Smhb Ltd | Health & social care | 2026 |
| SMI Advisory Solutions Limited | Wholesale & retail | 2022 |
| SMI Developments Limited | Construction | 2011 |
| SMI Holdings Limited | Financial services | 2026 |
| SMI, LMI & FMI African (UK) Ltd | Education | 2024 |
| Smil Ltd | Real estate | 2026 |
| Smile Arch Strategies Ltd | Real estate | 2021 |
| Smile Guard Ltd | Manufacturing | 2026 |
| Smile Lifestyle Ltd | Manufacturing | 2024 |
| Smile Property Management Ltd | Real estate | 2017 |
| SMILE4LONDON Ltd | Health & social care | 2020 |
| Smilers Nursery Limited | Health & social care | 2015 |
| Smiles by CN Ltd | Health & social care | 2021 |
| Smiles Planet Ltd | Other services | 2025 |
| Smilevision Limited | Health & social care | 2025 |
| Smileystars Ltd | Education | 2026 |
| Smita Tech Ltd | Information & communication | 2018 |
| Smith Trading (UK) Ltd | Manufacturing | 2010 |
| Smiths Residential Limited | Real estate | 2003 |
| SMJ Builders Limited | Construction | 2014 |
| SMK Driving School Ltd | Education | 2026 |
| SMK Property Investments Limited | Real estate | 2015 |
| SML Recruiters & Consultants Ltd. | Hospitality | 2025 |
| SMM Trade Limited | Wholesale & retail | 2025 |
| Smml Ltd | Construction | 2025 |
| Smmlab Ltd | Information & communication | 2021 |
| Smmm Ltd | Real estate | 2018 |
| SMN Homes Ltd | Real estate | 2026 |
| Smoke Theory Limited | Wholesale & retail | 2025 |
| Smokey World Ltd | Wholesale & retail | 2024 |
| Smokeywest Limited | Other services | 2022 |
| Smooth Cube Ltd | Information & communication | 2026 |
| Smooth Drivers Limited | Transport & logistics | 2024 |
| Smooth Facility Ltd | Administrative & support | 2019 |
| SMP Unit 5 Ltd | Real estate | 2016 |
| SMR Stores Ltd | Wholesale & retail | 2026 |
| Smrt Property Solutions Ltd | Construction | 2025 |
| SMS Electricals Ltd | Construction | 2025 |
| SMS Fresh Food Limited | Wholesale & retail | 2025 |
| SMS Health Care Services Limited | Administrative & support | 2017 |
| SMS Law Chambers Ltd | Professional & scientific | 2021 |