| Stadium Garage Ltd | Wholesale & retail | 2009 |
| Stadium MOT Garage Limited | Wholesale & retail | 2023 |
| Stag Security (Rotherham) Limited | Administrative & support | 2005 |
| Stage & Soul Ltd | Education | 2025 |
| Stage 2 Adoptions Ltd | Construction | 2026 |
| Stagepalm Entertainments Limited | Extraterritorial | 2015 |
| Stagmoor Homes Ltd | Real estate | 2023 |
| Stainforth Carpet Centre Limited | Wholesale & retail | 2012 |
| Stainforth Solar Ltd | Construction | 2024 |
| Stainton Construction Ltd | Construction | 2008 |
| Stallion Property Holdings Ltd | Financial services | 2023 |
| Stam Real Estate Limited | Real estate | 2026 |
| Stamford Site Services Limited | Administrative & support | 2025 |
| Stamrecht Hendriks Limited | Administrative & support | 2010 |
| Stamrecht Van DER Sterren Limited | Financial services | 2006 |
| Stan Joinery Limited | Construction | 2014 |
| Stan LOG Ltd | Transport & logistics | 2017 |
| Stan Tiffen Limited | Construction | 2002 |
| Stan White (Produce) Limited | Agriculture & fishing | 1975 |
| Stanbrook Murray Ltd | Professional & scientific | 2022 |
| Stancu Trans Ltd | Transport & logistics | 2016 |
| Standpoint Landscapes Limited | Administrative & support | 2020 |
| Stangaciu Building Limited | Construction | 2024 |
| Stanhurst Properties Limited | Real estate | 2020 |
| Stanhurst Systems Limited | Construction | 2017 |
| Staniland Marina Limited | Arts & recreation | 2014 |
| Stanley Cole Limited | Extraterritorial | 1971 |
| Stanley Sykes Ltd | Arts & recreation | 2014 |
| Stanon Healthcare Limited | Health & social care | 2024 |
| Stansfield and Sons Property Investment Limited | Real estate | 2023 |
| Stansfield Property Trading Ltd | Real estate | 2023 |
| Star 1 Mini Market Ltd | Wholesale & retail | 2025 |
| Star 27 Ltd | Hospitality | 2019 |
| Star 29 Limited | Hospitality | 2024 |
| Star 3PL Fulfilment Limited | Wholesale & retail | 2024 |
| Star Barber Shop Limited | Other services | 2022 |
| Star Commercials Ltd | Wholesale & retail | 2010 |
| Star Inn (Llangollen) Limited | Hospitality | 2026 |
| Star IT Solutions Limited | Information & communication | 2004 |
| Star of Gemini Ltd | Other services | 2026 |
| Star Pizza Bircotes Ltd | Hospitality | 2023 |
| Star Shop Eastlaith Limited | Wholesale & retail | 2024 |
| Star Stitch Ltd | Other services | 2024 |
| Star Textile Ltd | Wholesale & retail | 2019 |
| Star Transport Services Limited | Administrative & support | 2017 |
| Starfair Ltd | Professional & scientific | 2023 |
| Starge Holdings Limited | Professional & scientific | 2023 |
| Starlight Associates Ltd | Professional & scientific | 2025 |
| Starling Stone Ltd | Extraterritorial | 2026 |
| Stars Garden Construct Ltd | Construction | 2025 |
| Stars Supermarket Ltd | Wholesale & retail | 2026 |
| Starship Earth Limited | Water & waste | 2020 |
| Starstruck Studio Ltd | Wholesale & retail | 2024 |
| Startat Ltd | Transport & logistics | 2024 |
| Starverse Ltd | Information & communication | 2025 |
| Stately Tree Gardening & Landscaping Ltd | Professional & scientific | 2020 |
| Station 14 Fitness Ltd | Arts & recreation | 2020 |
| Statustyle Limited | Administrative & support | 1998 |
| Stauntons Homecare Limited | Extraterritorial | 2016 |
| Staveley Brothers Limited | Wholesale & retail | 1954 |
| Staveley Overhead Line Services Ltd | Construction | 2017 |
| Stavely Wealth Limited | Financial services | 2025 |
| Stay Connected IT Solutions Ltd | Information & communication | 2021 |
| Stay Lincolnshire Ltd | Hospitality | 2023 |
| Stay Sharp Engineering (UK) Ltd | Administrative & support | 2014 |
| Stay Yorkshire Limited | Real estate | 2022 |
| Ste.Mo Limited | Other services | 2012 |
| STE4 Examinations Limited | Professional & scientific | 2016 |
| Steak Bite Ltd | Hospitality | 2025 |
| Steakaway Ltd | Hospitality | 2023 |
| Steal Advices Ltd | Construction | 2025 |
| Steale Ltd | Real estate | 2025 |
| Stealth Vans Ltd | Administrative & support | 2017 |
| Steel City Vapes Limited | Wholesale & retail | 2022 |
| Steel Construction (Yorkshire) Limited | Construction | 2006 |
| Steel Reinforcement Services Ltd | Construction | 2008 |
| Steel Songs Limited | Information & communication | 2015 |
| Steel Supplies Limited | Wholesale & retail | 1999 |
| Steelcrest Infrastructure Ltd | Extraterritorial | 2026 |
| Steeldale Limited | Other services | 2019 |
| Steelright Ltd | Manufacturing | 2024 |
| Steelroot Construction Ltd | Extraterritorial | 2026 |
| Steelroot Craft Ltd | Wholesale & retail | 2025 |
| Steering Group Limited | Transport & logistics | 2017 |
| Stefan Daniel Trans Ltd | Transport & logistics | 2025 |
| Stefi Orazi Studio Limited | Administrative & support | 2012 |
| Stefy Bull Boxing Management Limited | Arts & recreation | 2019 |
| Stefy Bull Promotions Limited | Arts & recreation | 2019 |
| Stelamo Property Ltd | Real estate | 2025 |
| Stella Bars 2025 Limited | Hospitality | 2026 |
| Stella Plant Ltd | Construction | 2021 |
| Stellarrise Productions Ltd | Extraterritorial | 2026 |
| Stellexa Ltd | Information & communication | 2026 |
| Stemko Group Ltd | Construction | 2017 |
| Stepanov Transport Ltd | Transport & logistics | 2025 |
| Stephanie Maskill School of Dance Ltd | Arts & recreation | 2023 |
| Stepniewski Ltd | Energy | 2024 |
| Steps to Freedom CIC | Other services | 2016 |
| Sterling FMS Limited | Other services | 2019 |
| Sterling FMS Projects Limited | Administrative & support | 2023 |