| STK Property Investments Limited | Real estate | 2019 |
| Stockitz Limited | Wholesale & retail | 2025 |
| Stockland Green Limited | Real estate | 2008 |
| Stocksurv Ltd | Professional & scientific | 2025 |
| Stokdd Limited | Information & communication | 2017 |
| Stoke by Nayland Crown Limited | Hospitality | 2002 |
| Stokeman Cleaning Ltd | Administrative & support | 2025 |
| Stolenegg Digital Ltd | Information & communication | 2024 |
| Stonard Properties Limited | Real estate | 2021 |
| Stone Food Consultants Limited | Professional & scientific | 2023 |
| Stone Strategic Holdings Ltd | Financial services | 2026 |
| Stoneacres Park Limited | Extraterritorial | 2011 |
| Stoned & Waisted Limited | Wholesale & retail | 2018 |
| Stonehaven Realty Limited | Real estate | 2024 |
| Stoneliving Ltd | Real estate | 2025 |
| Stonetech Recruitment Limited | Administrative & support | 2016 |
| Stonewell Empire Limited | Information & communication | 2025 |
| Stoneworks Refurbishments Ltd | Construction | 2017 |
| Stonhous Ltd | Professional & scientific | 2020 |
| Store Performance Limited | Information & communication | 2018 |
| Storge Centre Ltd | Education | 2023 |
| Storycrafters Limited | Information & communication | 2025 |
| Storywise Technology Services Limited | Information & communication | 2023 |
| Stour Valley Tree Services Ltd | Administrative & support | 2019 |
| Stout Property Ltd. | Real estate | 2022 |
| Stowe Veterinary Centre Limited | Professional & scientific | 2005 |
| Stowupland Dog Meadow Ltd | Arts & recreation | 2023 |
| Stowupland Glamping Ltd | Hospitality | 2025 |
| Stradbury Properties Ltd | Real estate | 2025 |
| Strand of Silk Limited | Wholesale & retail | 2011 |
| Strands Haircare Limited | Manufacturing | 2026 |
| Strandsbyaratelabeauty Ltd | Other services | 2026 |
| Strange & Blinding Limited | Professional & scientific | 1997 |
| Stratagem Media Partners Limited | Arts & recreation | 2026 |
| Strategic Science Solutions Ltd | Professional & scientific | 2025 |
| Strategique Ltd | Extraterritorial | 2019 |
| Strategise GG Ltd | Information & communication | 2022 |
| Strategy Consulting Ltd | Professional & scientific | 2024 |
| Strateriq Ltd | Professional & scientific | 2024 |
| Stratiqi Ltd | Professional & scientific | 2025 |
| Stratis Technical Services Limited | Professional & scientific | 2014 |
| Stratium Equity Consulting Limited | Professional & scientific | 2026 |
| Strativon Partners Ltd | Professional & scientific | 2026 |
| Stratobridge Ltd | Wholesale & retail | 2025 |
| Stravida Ltd | Information & communication | 2025 |
| Streak Quest Ltd | Information & communication | 2025 |
| Streamlinexpert Ltd | Administrative & support | 2023 |
| Streetorvintage Ltd | Wholesale & retail | 2025 |
| Strength and Sanity Ltd | Arts & recreation | 2025 |
| Stride Tours Ltd | Administrative & support | 2025 |
| Striding Capital Ltd | Financial services | 2026 |
| Strike SMS Limited | Hospitality | 2008 |
| Strings and Keys Ltd | Information & communication | 2026 |
| Stripe Internet Limited | Information & communication | 2023 |
| Strivium Labs Ltd | Information & communication | 2026 |
| Strockise Limited | Information & communication | 2026 |
| Strom MBH Ltd | Manufacturing | 2022 |
| Structera Contracting Ltd | Construction | 2026 |
| Structovicora Execution Frameworks Ltd | Information & communication | 2026 |
| Structural Engineered Designs Ltd | Professional & scientific | 2022 |
| Structus Prime Ltd | Real estate | 2025 |
| Strymon Europe Limited | Wholesale & retail | 2024 |
| Stryveed Ltd | Professional & scientific | 2018 |
| STS Broadcast Limited | Information & communication | 2022 |
| STS Tracker Ltd | Transport & logistics | 2019 |
| Stuart Arbon Electrical Contractor Limited | Construction | 2019 |
| Stuart Blaik Consultancy Limited | Information & communication | 2023 |
| Stuart D Hughes Holdings Limited | Financial services | 2016 |
| Stuart D Hughes Limited | Professional & scientific | 2016 |
| Stuart Roberts Photography Ltd | Professional & scientific | 2026 |
| Studio 11 Architecture Limited | Professional & scientific | 2008 |
| Studio 3A Ltd | Professional & scientific | 2019 |
| Studio 7T7 Ltd | Wholesale & retail | 2024 |
| Studio Aprisca Ltd | Wholesale & retail | 2025 |
| Studio Dance & Fitness Limited | Arts & recreation | 2014 |
| Studio Imeus Limited | Arts & recreation | 2019 |
| Studio Kenyaki Limited | Information & communication | 2025 |
| Studio Leisure Limited | Hospitality | 2018 |
| Studio Marlais Ltd | Wholesale & retail | 2023 |
| Studio Overkill Ltd | Manufacturing | 2025 |
| Studio Reign Limited | Wholesale & retail | 2026 |
| Studio Variance Ltd | Information & communication | 2025 |
| Studio X Furniture Limited | Manufacturing | 2023 |
| Studiodonatella Ltd | Arts & recreation | 2025 |
| Styled by Lulabelles Ltd | Hospitality | 2022 |
| Styley Inc Ltd | Information & communication | 2023 |
| Stylo Barratts Shoes Limited | Wholesale & retail | 2009 |
| STZ Systems Ltd | Information & communication | 2020 |
| Sub-Structure Strategies Ltd. | Administrative & support | 2025 |
| Subdivision Investment Limited | Financial services | 2023 |
| Subie's Limited | Hospitality | 2018 |
| Sublime DSG Limited | Professional & scientific | 2019 |
| Sublime Housewares Ltd | Wholesale & retail | 2021 |
| Subrix Limited | Information & communication | 2022 |
| Subsos Limited | Professional & scientific | 2025 |
| Suburban Inns Limited | Hospitality | 2013 |
| Suburban Inns Operations Limited | Hospitality | 2020 |
| Suburban Inns People Limited | Administrative & support | 2020 |
| Subversive Structure Limited | Administrative & support | 2025 |
| Success and Wealth Publications Ltd | Administrative & support | 2007 |