| Star Car Valeting Limited | Administrative & support | 2022 |
| Star Chen Ltd | Administrative & support | 2018 |
| Star Cleaning Carpets Limited | Administrative & support | 2024 |
| Star Dwellings Ltd | Hospitality | 2023 |
| Star Early Years Provision Ltd | Health & social care | 2023 |
| Star International Recruitment and Consultancy Limited | Professional & scientific | 2025 |
| Star Lounge Limited | Hospitality | 2022 |
| Star Midco 1 Limited | Administrative & support | 2015 |
| Star Midco 2 Limited | Administrative & support | 2015 |
| Star North Midco Limited | Extraterritorial | 2024 |
| Star of the North Ltd | Transport & logistics | 2026 |
| Star Pupil Bidco Ltd | Financial services | 2023 |
| Star Pupil Topco Ltd | Financial services | 2023 |
| Star Renovations Ltd | Construction | 2018 |
| Star Rose Property Limited | Real estate | 2025 |
| Star Sound Productions Limited | Information & communication | 2018 |
| Star Strikers FCA Ltd | Arts & recreation | 2017 |
| Star Upholstery Limited | Manufacturing | 2015 |
| STAR68 Property Ltd | Real estate | 2025 |
| Starcrest Publishing Limited | Administrative & support | 2008 |
| Starey Solutions Ltd | Other services | 2013 |
| Stark Productions Limited | Information & communication | 2013 |
| Stark Site Services Ltd | Administrative & support | 2017 |
| Starkes Enterprises Ltd | Construction | 2025 |
| Starks Flooring Ltd | Construction | 2023 |
| Starline Rental Ltd | Administrative & support | 2025 |
| Starling Prestige Motors Ltd | Wholesale & retail | 2023 |
| Starling Property Ltd | Real estate | 2020 |
| Starnhill Four Limited | Wholesale & retail | 2006 |
| Starnhill One Limited | Wholesale & retail | 1993 |
| Starnhill Three Limited | Manufacturing | 2005 |
| Starnhill Two Limited | Wholesale & retail | 2020 |
| Starprint (UK) Ltd | Manufacturing | 2011 |
| Starr Ltd | Administrative & support | 2020 |
| Starr Vacations Limited | Hospitality | 2020 |
| Start Line MTB Limited | Wholesale & retail | 2020 |
| START2FINISH Cleaning Ltd | Other services | 2024 |
| START2STUDY Ltd | Information & communication | 2025 |
| Startextile Industrial Limited | Wholesale & retail | 2025 |
| Startlex Solution Ltd | Information & communication | 2025 |
| Startwell Ventures Ltd | Professional & scientific | 2025 |
| Starweld Engineering Limited | Manufacturing | 1946 |
| Starz Inns Ltd | Hospitality | 2024 |
| Stas Properties Ltd | Real estate | 2017 |
| Stash SOC Ltd | Manufacturing | 2021 |
| Stat Property Lettings Ltd | Real estate | 2021 |
| STAT1 Limited | Administrative & support | 2021 |
| State Power Investment Carbon Management Limited | Wholesale & retail | 2025 |
| Stately & Suburban Limited | Extraterritorial | 2010 |
| Staterra Systems Ltd | Information & communication | 2026 |
| Static Flow Productions Ltd | Information & communication | 2021 |
| Station Academy Ltd | Education | 2023 |
| Station Approach (West Yorkshire) Limited | Real estate | 2003 |
| Station Living Ltd | Hospitality | 2026 |
| Station Road Management Company (Blackpool) Limited | Real estate | 2022 |
| Statisi Ltd | Professional & scientific | 2015 |
| Statisticians in the Pharmaceutical Industry Limited | Other services | 2003 |
| Statller Limited | Wholesale & retail | 2010 |
| Statller Power House Limited | Wholesale & retail | 2015 |
| Staton Media Ltd | Information & communication | 2024 |
| Statua Studios Limited | Professional & scientific | 2025 |
| Status Leisure Ltd | Construction | 1989 |
| Staveley Homes Limited | Construction | 2020 |
| Staves Estate Agents Limited | Real estate | 2009 |
| Stay Angels Ltd | Real estate | 2021 |
| Stay Curious Media Ltd | Information & communication | 2025 |
| Stay DRY Roofing & Property Solutions Limited | Construction | 2025 |
| Stay Opal Ltd | Households | 2025 |
| Stay Red Limited | Arts & recreation | 2012 |
| Stay Safe Security Ltd | Administrative & support | 2018 |
| Stay-Safe K9 UK Limited | Other services | 2021 |
| Staycurity Ltd | Financial services | 2020 |
| Stayluxe Properties Limited | Hospitality | 2026 |
| Staynova Apartments Limited | Real estate | 2025 |
| Staysafe Homes Limited | Real estate | 2026 |
| Staywright Ltd | Real estate | 2025 |
| STB Events Ltd | Hospitality | 2022 |
| STB2 Limited | Administrative & support | 2020 |
| STC Interiors Limited | Manufacturing | 2013 |
| STC Properties Ltd | Households | 2019 |
| Steadfast Tools Limited | Extraterritorial | 1997 |
| Steady Ship Governance Ltd | Information & communication | 2026 |
| Stealth Electrical Services Ltd | Construction | 2024 |
| Stealth Printing Ltd | Administrative & support | 2023 |
| Stealth Professional Limited | Professional & scientific | 2006 |
| Steam and Spice House Ltd | Hospitality | 2025 |
| Steam N’ Spice Limited | Hospitality | 2025 |
| Steam Works Learning | Education | 2016 |
| Steam Yard LLP | | 2013 |
| Stechford Carpets Limited | Wholesale & retail | 2005 |
| Steel & Platts Ltd | Health & social care | 2022 |
| Steel Arrow Ltd | Information & communication | 2012 |
| Steel Arts Software Ltd | Arts & recreation | 2017 |
| Steel Bar Events Limited | Hospitality | 2026 |
| Steel BEE Psychology Ltd | Professional & scientific | 2021 |
| Steel Boring Services Limited | Extraterritorial | 2015 |
| Steel City Apartments Limited | Hospitality | 2026 |
| Steel City Autos Ltd | Wholesale & retail | 2022 |
| Steel City Bearings Limited | Wholesale & retail | 1995 |
| Steel City Builders Ltd | Construction | 2024 |