| Sj&R UK Ltd | Wholesale & retail | 2025 |
| Sj&W Holdings Ltd | Real estate | 2019 |
| SJK Pubs Limited | Hospitality | 2013 |
| SJK Refinishers Ltd | Wholesale & retail | 2019 |
| Sjmb Transport Limited | Transport & logistics | 2024 |
| SJP Cleaning Services Ltd | Administrative & support | 2026 |
| SJP Properties (Epsom) Limited | Real estate | 2025 |
| SJR Plastering Ltd | Construction | 2026 |
| SJS Cleaning Limited | Administrative & support | 2024 |
| SJS Heating Ltd | Construction | 2025 |
| SJW0767 Ltd | Wholesale & retail | 2020 |
| SK 23 Properties Ltd | Real estate | 2023 |
| SK Analysis Ltd | Administrative & support | 2025 |
| SK Associates Leeds Limited | Health & social care | 2021 |
| SK Austin West Ltd | Professional & scientific | 2023 |
| SK Blinds Ltd | Wholesale & retail | 2024 |
| SK Bradford Ltd | Real estate | 2024 |
| SK Car Traders Limited | Wholesale & retail | 2013 |
| SK Cladding Limited | Wholesale & retail | 2023 |
| SK Designers Limited | Wholesale & retail | 2025 |
| SK Developments Ltd | Real estate | 2019 |
| SK Eyecare Ltd | Health & social care | 2023 |
| SK Financial Consulting Ltd | Administrative & support | 2012 |
| SK Foods BFD Ltd | Wholesale & retail | 2026 |
| SK Homes Trading Ltd | Real estate | 2024 |
| SK Jewels UK Ltd | Wholesale & retail | 2025 |
| SK Merchandise Ltd | Wholesale & retail | 2020 |
| SK Office Removals Ltd | Transport & logistics | 2023 |
| SK Optical Services Limited | Health & social care | 2018 |
| SK Projx Ltd | Professional & scientific | 2015 |
| SK Sales and Marketing Limited | Administrative & support | 2016 |
| SK Select Ltd | Wholesale & retail | 2026 |
| SK Serviced Apartments Ltd | Hospitality | 2026 |
| SK Simple Solutions Ltd | Professional & scientific | 2019 |
| SK Transportation Limited | Transport & logistics | 2025 |
| SK Vape & Confectionary Ltd | Wholesale & retail | 2025 |
| SK Xpress Ltd | Transport & logistics | 2025 |
| SK95 Limited | Professional & scientific | 2024 |
| SKA Property Holdings Limited | Households | 2025 |
| SKA Stars Limited | Wholesale & retail | 2016 |
| Skauser Services Limited | Health & social care | 2026 |
| SKB Contractors Ltd | Construction | 2025 |
| SKB2016 Limited | Financial services | 2016 |
| Skff Ltd | Wholesale & retail | 2021 |
| SKH Developments Ltd | Construction | 2018 |
| SKH Ltd | Wholesale & retail | 2022 |
| Skhanqs Ltd | Professional & scientific | 2024 |
| Skies of Serenity Ltd | Education | 2025 |
| Skill Engine Ltd | Information & communication | 2025 |
| Skills Gateway CIC | Administrative & support | 2024 |
| Skills Link Training Consultancy Ltd | Education | 2019 |
| Skills-Link Training Ltd | Education | 2013 |
| SKILLS2ACHIEVE Limited | Education | 2019 |
| SKILLS4WORK Ltd | Education | 2024 |
| Skilltech Learning & Commerce Limited | Wholesale & retail | 2026 |
| Skin Arch Ltd | Other services | 2024 |
| Skin Arch Shop Ltd | Wholesale & retail | 2024 |
| Skin Britannia Ltd | Health & social care | 2023 |
| Skin by Rose Limited | Other services | 2023 |
| Skin Essence & Beauty Ltd | Other services | 2025 |
| Skin Hobbies Ltd | Wholesale & retail | 2026 |
| SKIN101-LASER Ltd | Other services | 2025 |
| Skincare by Katherine Taylor Ltd | Wholesale & retail | 2019 |
| Skingenuity Limited | Health & social care | 2018 |
| Skinin Co Limited | Manufacturing | 2025 |
| Skinnovation Medispa Ltd | Other services | 2023 |
| Skinnypatches Ltd | Wholesale & retail | 2025 |
| Skinoff Ltd | Wholesale & retail | 2025 |
| Skinterest Medispa Ltd | Administrative & support | 2018 |
| Skip Connect Ltd | Professional & scientific | 2021 |
| Skip Hire Bradford Limited | Water & waste | 2017 |
| Skipton Car & Van Hire Ltd | Administrative & support | 2019 |
| Skipton Sea Ltd | Wholesale & retail | 2025 |
| Skiy Investment Limited | Real estate | 2026 |
| SKK Investments Ltd | Financial services | 2020 |
| SKL Engineering Services Ltd | Professional & scientific | 2024 |
| SKM Elite Alloys Ltd | Professional & scientific | 2025 |
| Skmegamart Limited | Wholesale & retail | 2025 |
| SKN Counselling Ltd | Health & social care | 2012 |
| Skor Sports Ltd | Wholesale & retail | 2025 |
| SKP Enterprises Ltd | Financial services | 2025 |
| Skpt Properties Limited | Real estate | 2026 |
| Skpt Services Limited | Health & social care | 2023 |
| Skrubs Holding Limited | Wholesale & retail | 2022 |
| SKS Contracting Limited | Health & social care | 2023 |
| Skur Taxis Limited | Transport & logistics | 2025 |
| Sky Blue House Limited | Hospitality | 2024 |
| Sky FLY Connections Ltd | Administrative & support | 2002 |
| Sky Link Takeaway Limited | Hospitality | 2025 |
| Sky LUX Ltd | Wholesale & retail | 2024 |
| Sky Nails & Beauty (BD) Limited | Other services | 2022 |
| Sky Peak Properties Limited | Real estate | 2024 |
| Sky Trips Holidays Ltd | Administrative & support | 2024 |
| Sky Trips Limited | Administrative & support | 2024 |
| Sky Ways Travelling Ltd | Administrative & support | 2017 |
| Sky-Fly 24-7 Limited | Transport & logistics | 2025 |
| Skybridge Facilities Limited | Administrative & support | 2025 |
| Skybridge Holdings Limited | Real estate | 2024 |
| Skybright Travel Ltd | Administrative & support | 2025 |
| Skycraft Property Improvements Limited | Construction | 2026 |