| SJB Consultancy Ltd | Professional & scientific | 2018 |
| SJBAKER55 Limited | Transport & logistics | 2010 |
| SJD Electrical Limited | Extraterritorial | 2004 |
| SJD Property Limited | Real estate | 2022 |
| SJG Tech Ltd | Wholesale & retail | 2024 |
| SJH Site Services Limited | Administrative & support | 2009 |
| SJJ Family LLP | | 2024 |
| SJL Property Management Limited | Real estate | 2026 |
| SJM Properties MK Ltd | Real estate | 2025 |
| Sjnn Ltd | Real estate | 2023 |
| SJP Contracts Limited | Construction | 2007 |
| SJP Holdings Ltd | Construction | 2015 |
| Sjpt Holdings Limited | Administrative & support | 2024 |
| SJR Home Improvements Ltd | Construction | 2021 |
| SJS (MK) Limited | Manufacturing | 2017 |
| SJS Tennis Coaching Limited | Arts & recreation | 2016 |
| SJT Avionics Ltd | Professional & scientific | 2023 |
| SJW ALT Group Holdings Ltd | Financial services | 2025 |
| SJW Corp Ltd. | Wholesale & retail | 2024 |
| SJW Wealth Management Ltd | Financial services | 2014 |
| SK Core Technologies Ltd | Information & communication | 2019 |
| SK Disinfection Ltd | Health & social care | 2022 |
| SK DRY Cleaners Limited | Other services | 2019 |
| SK Global Investment UK Ltd | Information & communication | 2018 |
| SK Global Menagment Ltd | Transport & logistics | 2025 |
| SK Haulage Ltd | Wholesale & retail | 2025 |
| SK Motors London Ltd | Wholesale & retail | 2019 |
| SK Super Transport Ltd | Transport & logistics | 2024 |
| SK Witham Chicken Ltd | Wholesale & retail | 2019 |
| Skaa Properties Limited | Real estate | 2022 |
| Skaavys Limited | Information & communication | 2015 |
| Skaithe Limited | Wholesale & retail | 2026 |
| Skan Tech Limited | Information & communication | 2016 |
| Skan Technology Limited | Information & communication | 2022 |
| Skand Estates Ltd | Real estate | 2020 |
| Skandhanshi Limited | Real estate | 2023 |
| Skcull Asset Services Limited | Administrative & support | 2014 |
| SKD Operator Solutions Limited | Manufacturing | 2015 |
| Skein Force Ltd | Information & communication | 2018 |
| Skelwith Fold Consultancy Limited | Professional & scientific | 2019 |
| Skepseis Limited | Professional & scientific | 2023 |
| SKF Automotive (U.K.) Limited | Wholesale & retail | 2025 |
| SKH Digital Ltd | Information & communication | 2024 |
| Skillora Consulting Limited | Professional & scientific | 2026 |
| Skills Art Materials & Picture Framing Ltd | Wholesale & retail | 2026 |
| Skills-Hub MK Ltd | Real estate | 2019 |
| Skillsbridge MK CIC | Education | 2026 |
| Skillzing CIC | Education | 2025 |
| Skimcare Ltd | Information & communication | 2023 |
| Skimmr Ltd | Other services | 2024 |
| Skin Glider Limited | Wholesale & retail | 2024 |
| Skin Rehab Products Ltd | Wholesale & retail | 2025 |
| Skin Renew London 2 Limited | Other services | 2026 |
| Skinner-Uk Limited | Administrative & support | 2004 |
| SKK Corporation Limited | Real estate | 2019 |
| SKK Software Ltd | Information & communication | 2010 |
| SKL Lettings Limited | Real estate | 2022 |
| Sklr Ltd | Hospitality | 2026 |
| SKM Lettings Limited | Real estate | 2012 |
| Skmk Events Ltd | Hospitality | 2019 |
| Skmk Fusion Catering Ltd | Hospitality | 2024 |
| Skmk Street Food Ltd | Hospitality | 2019 |
| Sknm Ltd | Construction | 2026 |
| SKP Pharm Ltd | Other services | 2013 |
| Skrbl Limited | Hospitality | 2025 |
| Skrl Limited | Professional & scientific | 2024 |
| SKS Cars Ltd | Wholesale & retail | 2018 |
| SKU Digital Ltd | Information & communication | 2018 |
| Skulduggery Limited | Professional & scientific | 2006 |
| Sky CAM Productions Ltd. | Professional & scientific | 2014 |
| Sky Car Wash Ltd | Administrative & support | 2025 |
| Sky Chance Technology Limited | Information & communication | 2021 |
| Sky Nails & Beauty Ltd | Other services | 2026 |
| Sky Nails MK2 Ltd | Other services | 2023 |
| Sky Peak Enterprises Limited | Wholesale & retail | 2026 |
| Sky-Hi Scaffolding Ltd | Construction | 1999 |
| Sky-Insights Ltd | Professional & scientific | 2018 |
| Skyblue 5 Ltd | Households | 2024 |
| Skyblue Itunu Investments Limited | Professional & scientific | 2017 |
| Skycandy Entertainment Limited | Administrative & support | 2016 |
| Skye Advisory Ltd. | Professional & scientific | 2022 |
| Skye Solutions Ltd | Information & communication | 2007 |
| Skyes Pet Care Ltd | Professional & scientific | 2021 |
| Skyforge Digital Solutions Ltd | Information & communication | 2026 |
| Skyheight Properties Ltd | Real estate | 2020 |
| Skyhigh Express Care Ltd | Health & social care | 2022 |
| Skyhome Properties Limited | Real estate | 2023 |
| Skylark Tech Ltd | Information & communication | 2021 |
| Skyleap Solutions Ltd | Information & communication | 2023 |
| Skylight Transport Limited | Other services | 2014 |
| Skyline Bedford Limited | Transport & logistics | 2016 |
| Skyline Financial Limited | Financial services | 2017 |
| Skyline Taxi and Private Hire Limited | Transport & logistics | 2001 |
| Skyline Taxis Holdings Limited | Transport & logistics | 2019 |
| Skyline Taxis Northampton Ltd | Transport & logistics | 2016 |
| Skylinkconsult Limited | Information & communication | 2014 |
| Skylite Capital Limited | Financial services | 2025 |
| Skylon Investments Limited | Other services | 2011 |
| Skyrace International Freight Forwarders Limited | | 2007 |
| Skyrock Construction Ltd | Construction | 2025 |