| Steve Dodds Associates Ltd | Administrative & support | 2009 |
| Steve Farmer Plumbing & Heating Ltd | Construction | 2012 |
| Steve Fretwell Flooring Limited | Construction | 2024 |
| Steve Moriarty GAS Maintenance Limited | Construction | 2023 |
| Steve Ringer Angling Consultancy Ltd | Agriculture & fishing | 2022 |
| Steve White (Decorating) Ltd. | Construction | 2007 |
| Steven FOX Limited | Real estate | 2001 |
| Steven Michael Kitchens & Interiors Limited | Manufacturing | 2019 |
| Steven Paul Smith Carpentry Limited | Construction | 2015 |
| Steven Smith Construction Ltd | Construction | 2014 |
| Stevens Investments Limited | Real estate | 2018 |
| Stevenson Inc Ltd | Manufacturing | 2023 |
| Steves PUB Company Limited | Hospitality | 2023 |
| Stewart Exterior Cleaning Ltd | Administrative & support | 2025 |
| Stewert Electrical Services Limited | Construction | 1997 |
| Stici Limited | Transport & logistics | 2014 |
| Sticky BEE Marketing Ltd | Professional & scientific | 2021 |
| Sticky Traders Ltd | Wholesale & retail | 2017 |
| Stidu & Co Enterprise Ltd | Construction | 2019 |
| Stiifan Ltd | Construction | 2026 |
| Still ROM Ltd | Transport & logistics | 2021 |
| Still Static Limited | Wholesale & retail | 2012 |
| Stillness Partners Ltd | Professional & scientific | 2024 |
| Stimpson Walton Bond Ltd | Professional & scientific | 2010 |
| Stimulus Aegis Consultancy Limited | Health & social care | 2014 |
| Stingrae Films Ltd | Information & communication | 2022 |
| Stingray Events Limited | Other services | 2025 |
| Stingray Marketing Limited | Professional & scientific | 2025 |
| Stitches Marquee Hire Limited | Administrative & support | 2019 |
| Stituvasile Transport Limited | Transport & logistics | 2018 |
| STJ Plastics Consulting Limited | Professional & scientific | 2014 |
| Stjerneskud Ltd | Professional & scientific | 2014 |
| Stlo Limited | Other services | 2020 |
| Stmb Group Ltd. | Financial services | 2020 |
| Stmb Property Ltd | Real estate | 2021 |
| Stmb Sports Properties Ltd. | Financial services | 2020 |
| Stmc Ltd | Arts & recreation | 2023 |
| Stockcy Limited | Financial services | 2022 |
| Stocked Vending UK Ltd | Wholesale & retail | 2026 |
| Stockton Property Limited | Wholesale & retail | 2019 |
| Stockwell Construction Limited | Construction | 2013 |
| Stockyard Enterprises Limited | Financial services | 2024 |
| Stohk Ltd | Manufacturing | 2020 |
| Stoica Vasile & Patrik Ltd | Transport & logistics | 2022 |
| Stoke Bardolph 10 Renewables Limited | Professional & scientific | 2023 |
| Stoke Bruerne Boat Company Limited | Transport & logistics | 2003 |
| Stolen Picture Ltd | Information & communication | 2016 |
| Stone & Co Legal Ltd | Professional & scientific | 2026 |
| Stone & Stone Interiors Limited | Construction | 2019 |
| Stone and Iron Limited | Construction | 2017 |
| Stone Hospitality Solutions Ltd | Hospitality | 2025 |
| Stone House Investments Limited | Real estate | 2009 |
| Stone Wealth Management | Financial services | 2019 |
| Stone Well Cottage Day Nursery Limited | Education | 2026 |
| Stonebrook Associates Limited | Professional & scientific | 2011 |
| Stonecrest Marble Limited | Wholesale & retail | 2003 |
| Stonegate Living Ltd | Real estate | 2026 |
| Stoneguard Security Service Ltd | Administrative & support | 2020 |
| Stonehart Consultants Limited | Information & communication | 2021 |
| Stonehayes Bricklayers Ltd | Construction | 2025 |
| Stoneleigh Devon Ltd | Extraterritorial | 2016 |
| Stonepit Solutions Ltd | Professional & scientific | 2024 |
| Stones Building Contractors Limited | Construction | 2012 |
| Stoneton Properties | Real estate | 2017 |
| Stonewall Developments Northampton Ltd | Construction | 2025 |
| Stonewrite Memorials Ltd. | Other services | 1993 |
| Stonhills Land & Estate Agents LLP | | 2016 |
| Stonhills Lettings Ltd | Real estate | 2010 |
| Stonhills Limited | Real estate | 1997 |
| Stonik Ltd | Transport & logistics | 2019 |
| Stonor Medical Ltd | Administrative & support | 2021 |
| Stop Hate UK | Other services | 1996 |
| Storage & Probate Limited | Professional & scientific | 2005 |
| Storey Enterprises Limited | Information & communication | 2013 |
| Storey Property Developments (Three) Limited | Real estate | 2019 |
| Storey Property Developments Assets Ltd | Real estate | 2023 |
| Storey Property Developments Holdings Limited | Financial services | 2022 |
| Storey Property Developments Limited | Real estate | 2003 |
| Storey Strategic Land Limited | Real estate | 2020 |
| Storing Ideas Limited | Transport & logistics | 1998 |
| Stork Renovate Ltd | Construction | 2018 |
| Storm Group Developments Ltd | Construction | 2025 |
| Storm Solutions Ltd | Construction | 2022 |
| Stormpurple Limited | Information & communication | 2007 |
| Story Property Solutions Ltd | Real estate | 2019 |
| Stothard Media Limited | Other services | 2024 |
| STR 48 Limited | Hospitality | 2019 |
| STR Pro Consulting Limited | Professional & scientific | 2021 |
| STR Services Limited | Construction | 2015 |
| Strachan Football Foundation Community Interest Company | Arts & recreation | 2011 |
| Straffan Investments Limited | Extraterritorial | 2022 |
| Strale Ltd | Professional & scientific | 2020 |
| Strand-Build Ltd | Construction | 2019 |
| Strange by Design Limited | Professional & scientific | 2025 |
| Strange Trip Ltd | Professional & scientific | 2023 |
| Strategic DEV 786 Ltd | Information & communication | 2024 |
| Strategic Ecological Solutions Ltd | Professional & scientific | 2016 |
| Strategic Marketing Consultants Limited | Professional & scientific | 2013 |
| Strategic Technologies & Solutions Limited | Information & communication | 2009 |
| Strategy Advantage Ltd | Administrative & support | 2018 |