| SK International IT Solutions Ltd | Wholesale & retail | 2026 |
| SK International Limited | Arts & recreation | 2018 |
| SK Investment London Ltd | Real estate | 2023 |
| SK MAD Properties Limited | Real estate | 2017 |
| SK PAN Parlour Limited | Wholesale & retail | 2025 |
| SK Service & Maintenance Limited | Manufacturing | 2025 |
| SK Shayan Ltd | Real estate | 2025 |
| SK Smiles Limited | Health & social care | 2021 |
| SK110 Services Limited | Health & social care | 2018 |
| SK9 Decor and Maintenance Ltd | Construction | 2025 |
| SKA Management Ltd | Hospitality | 2024 |
| Skac Ltd | Professional & scientific | 2014 |
| Skanthatheva Limited | Extraterritorial | 2024 |
| Skayil Ltd | Wholesale & retail | 2023 |
| SKC International Ltd | Wholesale & retail | 2021 |
| Skck Ltd | Real estate | 2022 |
| Skcon Ltd | Real estate | 2023 |
| Skcutz Limited | Other services | 2024 |
| SKD Consult Ltd | Professional & scientific | 2025 |
| Skehan Legal Limited | Professional & scientific | 2015 |
| Skeja Developments Ltd | Real estate | 2025 |
| Skeja Solution Limited | Information & communication | 2025 |
| Skellon Superfold Limited | Professional & scientific | 2014 |
| Sketal Limited | Information & communication | 2014 |
| Sketchmyview Ltd | Information & communication | 2021 |
| Skf&B Ltd | Hospitality | 2022 |
| Skfoodsldn Ltd | Manufacturing | 2025 |
| SKH Properties 1 Limited | Real estate | 2023 |
| SKH Properties 2 Limited | Real estate | 2023 |
| SKI Time Limited | Construction | 1996 |
| Skies Limited | Health & social care | 2015 |
| Skill Consultant Ltd | Information & communication | 2018 |
| Skill to Route Ltd. | Administrative & support | 2025 |
| Skilled Workers Ltd | Administrative & support | 2023 |
| Skillen Lodge Management Company Limited | Households | 1993 |
| Skills Sphere Ltd | Administrative & support | 2025 |
| Skimmington Stud Limited | Agriculture & fishing | 2021 |
| Skin Aesthetics Lounge Ltd | Administrative & support | 2024 |
| Skin Deep Medical Limited | Administrative & support | 2008 |
| Skin Doctor Limited | Health & social care | 2026 |
| Skinfinite Skin Ltd | Wholesale & retail | 2023 |
| Skinlab IQ Ltd | Other services | 2023 |
| Skinnou Ltd | Health & social care | 2021 |
| Skinny Mixes (UK) Ltd | Wholesale & retail | 2019 |
| Skinray Ltd | Other services | 2026 |
| Skins Laser Clinic Ltd | Other services | 2012 |
| Skintology Limited | Other services | 2011 |
| Skippeez Limited | Wholesale & retail | 2025 |
| Skladem Infotech Ltd | Information & communication | 2024 |
| SKM Ventures Ltd | Real estate | 2023 |
| SKN Property Services Ltd | Real estate | 2020 |
| Skoraczewska Ltd | Manufacturing | 2015 |
| SKP Eleven Limited | Real estate | 2022 |
| SKP Online Limited | Wholesale & retail | 2022 |
| SKP81 Limited | Health & social care | 2019 |
| SKR Property Investments Limited | Real estate | 2021 |
| SKR Property Services Ltd | Households | 2026 |
| SKR Trading Ltd | Wholesale & retail | 2022 |
| SKT Estates Limited | Real estate | 2022 |
| SKT Foods Ltd | Hospitality | 2018 |
| Skta Smile Ltd | Real estate | 2026 |
| Sktechventures Ltd | Information & communication | 2021 |
| Skva Limited | Real estate | 2017 |
| Sky 26 Limited | Construction | 2007 |
| Sky Aims Limited | Wholesale & retail | 2023 |
| Sky Cabin Limited | Real estate | 2015 |
| Sky Digital Solutions Limited | Wholesale & retail | 2020 |
| Sky Doctors Ltd | Real estate | 2017 |
| Sky Entertainment Ltd | Information & communication | 2025 |
| Sky Heating & Plumbing Ltd | Construction | 2024 |
| Sky LAB Diamonds Ltd | Wholesale & retail | 2025 |
| Sky London Tour Limited | Administrative & support | 2017 |
| Sky Magic Properties Limited | Real estate | 2017 |
| Sky Network Services Limited | Information & communication | 2013 |
| Sky Old Limited | Real estate | 2018 |
| Sky Pinnacle LLP | | 2024 |
| Sky Roofing Limited | Construction | 2019 |
| Sky Rooflights Ltd | Manufacturing | 2020 |
| Sky Silk Textiles Ltd | Wholesale & retail | 2019 |
| Sky View Capital Ltd | Real estate | 2024 |
| Sky Walkers Balloon Experiences Ltd | Transport & logistics | 2024 |
| Sky-High Digital Limited | Wholesale & retail | 2021 |
| SKY9 Enterprise Limited | Manufacturing | 2016 |
| SKY9 Movemasters Ltd | Transport & logistics | 2025 |
| SKY9 Property Investments Ltd | Hospitality | 2026 |
| Skybound Studio Ltd | Information & communication | 2021 |
| Skybrooke Design Ltd | Professional & scientific | 2014 |
| Skyconsult Limited | Professional & scientific | 2021 |
| Skydda Health Ltd | Health & social care | 2014 |
| Skye Promotions Limited | Professional & scientific | 2024 |
| Skyeakash Global Ltd | Financial services | 2026 |
| Skyecycle Limited | Water & waste | 2008 |
| Skyfuel UK Limited | Wholesale & retail | 2023 |
| Skykat Limited | Information & communication | 2019 |
| Skylandtrends Limited | Wholesale & retail | 2025 |
| Skylark Accessories Ltd | Wholesale & retail | 2016 |
| Skylark Design Ltd | Arts & recreation | 2014 |
| Skylark Hospitality Ltd | Hospitality | 2018 |
| Skyler Providers Ltd | Wholesale & retail | 2024 |
| Skylifting Ltd | Manufacturing | 2025 |