| Stamford Cannon (MK) Ltd | Construction | 2020 |
| Stamford Cannon (Rothwell) Limited | Construction | 2023 |
| Stamford Designer Glass Limited | Extraterritorial | 2017 |
| Stan and Van Relocation Ltd | Transport & logistics | 2021 |
| Stan and Van Removals Ltd | Water & waste | 2021 |
| Stan Delivery Limited | Transport & logistics | 2019 |
| Stan MK Ltd | Transport & logistics | 2017 |
| Stan Trans PL Ltd | Transport & logistics | 2025 |
| Standar Limited | Transport & logistics | 2017 |
| Standard Heat Ltd | Professional & scientific | 2022 |
| Standex Digital Limited | Information & communication | 2024 |
| Stanev Ltd | Transport & logistics | 2019 |
| Stanford Innovation Consulting Ltd | Professional & scientific | 2023 |
| Stanley David and Associates Limited | Information & communication | 2010 |
| Stanley Property Solutions Limited | Administrative & support | 2008 |
| Stanley Richards Properties Limited | Real estate | 2025 |
| Stanley Tax Associates Ltd | Extraterritorial | 2022 |
| Stanley Transport Services Ltd | Transport & logistics | 2007 |
| Stantone Hydraulics Limited | Real estate | 1977 |
| Stantrans Ltd | Transport & logistics | 2020 |
| Stany-Trans Ltd | Transport & logistics | 2024 |
| Stanzoo Ltd | Information & communication | 2021 |
| Staplecherry Ltd | Wholesale & retail | 2024 |
| Stapleford Management Limited | Administrative & support | 1996 |
| Star Bright Day Nurseries Ltd | Education | 2022 |
| Star Bright Day Nursery Limited | Education | 2014 |
| Star Car Sales Bedford Ltd | Wholesale & retail | 2017 |
| Star Charters LLP | | 2007 |
| Star Cruise Motors Limited | Wholesale & retail | 2024 |
| Star Global Trading Limited | Wholesale & retail | 2004 |
| Star GR Ltd | Real estate | 2018 |
| Star Groceries Limited | Wholesale & retail | 2020 |
| Star Group Live (Holdings) Limited | Financial services | 2021 |
| Star Group Live Limited | Construction | 1983 |
| Star Homes & Estates Ltd | Real estate | 2025 |
| Star Live Equipment Limited | Construction | 2020 |
| Star Live Investments Limited | Financial services | 2017 |
| Star Live Limited | Administrative & support | 2022 |
| Star Live Topco Limited | Professional & scientific | 2023 |
| Star Property Developments Ltd | Real estate | 2017 |
| Starapple Restaurant Limited | Hospitality | 2020 |
| Starcarsmk Ltd | Wholesale & retail | 2024 |
| Stardime Limited | | 1992 |
| Stardotstar Consultancy Services Limited | Information & communication | 2014 |
| Stargaze AI Limited | Information & communication | 2025 |
| Stargrade Construction Limited | Construction | 1994 |
| Stark Caravan Company Limited | Manufacturing | 2010 |
| Stark Homes Ltd | Real estate | 2020 |
| Starke Financial Limited | Information & communication | 2011 |
| Starkey Laboratories Limited | Manufacturing | 1992 |
| Starkey Productions Ltd | Information & communication | 2026 |
| Starkmk Ltd | Construction | 2023 |
| Starknight Ebike Ltd | Manufacturing | 2025 |
| Starlab (UK), Ltd. | Wholesale & retail | 1998 |
| Starlight OIL Heating Services Ltd | Construction | 2022 |
| Starlight Property Management Ltd | Real estate | 2018 |
| Starline Car Rental Limited | Administrative & support | 2019 |
| Starline Property Limited | Real estate | 2024 |
| Starline Security Ltd | Administrative & support | 2023 |
| Starline Traders & Contractors Ltd | Construction | 2023 |
| Starlion Ltd | Administrative & support | 2021 |
| Starmere Limited | Real estate | 2003 |
| Starmett International Ltd | Wholesale & retail | 2018 |
| Starraflesmk Ltd | Wholesale & retail | 2025 |
| Starredldn Limited | Manufacturing | 2025 |
| Starride Taxis Ltd | Transport & logistics | 2019 |
| Starride VIP Ltd | Transport & logistics | 2022 |
| Starry AI Ltd | Information & communication | 2019 |
| Starry Care UK Limited | Administrative & support | 2018 |
| Starry Sky Culture Ltd | Information & communication | 2025 |
| Stars Barbering Saloon Ltd | Other services | 2026 |
| Stars Over Babylon Limited | Information & communication | 2022 |
| Starshine Factory Limited | Professional & scientific | 2024 |
| Starship Technologies Ltd | Administrative & support | 2016 |
| Starsneakersmk Ltd | Wholesale & retail | 2024 |
| Starstone Capital Limited | Real estate | 2015 |
| Starstone Properties Limited | Real estate | 2022 |
| Start UP Steve Ltd | Professional & scientific | 2018 |
| START2END Ltd | Real estate | 2022 |
| Startconstruct Limited | Construction | 2025 |
| Starting Point Solutions Limited | Information & communication | 2000 |
| Startup Tribe Ltd | Professional & scientific | 2025 |
| Starvin Ltd | Hospitality | 2025 |
| Starwok Catering UK Ltd | Hospitality | 2017 |
| Stas Health Ltd | Extraterritorial | 2021 |
| State K9 Security Ltd | Transport & logistics | 2019 |
| State Private Hire Limited | Transport & logistics | 2024 |
| Stationads Ltd | Professional & scientific | 2023 |
| Stay Connected Family Time Ltd | Health & social care | 2025 |
| Stay Ibiza UK Ltd | Hospitality | 2015 |
| Staydeer Ltd | Hospitality | 2018 |
| Stck Holdings Limited | Construction | 2022 |
| STD Security Ltd | Administrative & support | 2025 |
| STE, Sports Tourism Education Ltd | Education | 2019 |
| Stealth Auto Trading Ltd Limited | Wholesale & retail | 2026 |
| Steam Clean Experts Ltd | Administrative & support | 2023 |
| Stean Innovations Limited | Professional & scientific | 2011 |
| Stean Solutions Limited | Health & social care | 2014 |
| Steel Eurotrade Corporation Limited | Wholesale & retail | 2007 |
| Steel Hibiscus Limited | Real estate | 2018 |