| Storage Partners Ltd | Information & communication | 2025 |
| Stormify Ltd | Administrative & support | 2015 |
| Straight Productions Limited | Administrative & support | 2011 |
| Stratfield Radiology Services Ltd | Health & social care | 2016 |
| Stratford Place (Lymington) Management Company Limited | Households | 1990 |
| Stripeasy Limited | Other services | 2000 |
| Strom Architects Limited | Professional & scientific | 2012 |
| Stronglings Ltd | Manufacturing | 2022 |
| Studio Macki Ltd | Extraterritorial | 2017 |
| Studio Macnamara Ltd | Professional & scientific | 2024 |
| STUDIO74 South Limited | Real estate | 2023 |
| Style IT OUT Limited | Wholesale & retail | 2010 |
| SUE Grant Limited | Other services | 2010 |
| SUE Stowell Limited | Extraterritorial | 1990 |
| Suitably Shod Limited | Wholesale & retail | 2007 |
| Sullivan Mitchell (London) Ltd. | Real estate | 1997 |
| Sullivan Mitchell Limited | Real estate | 1994 |
| Sullivan Mitchell Management Ltd | Real estate | 2007 |
| Sunnybank Plants Limited | Wholesale & retail | 2023 |
| Sunrosa Ltd | Professional & scientific | 2024 |
| SUPERPETSTOREUK247 Ltd | Wholesale & retail | 2020 |
| SUPPORT4.BIZ (New Forest) Ltd | Professional & scientific | 2018 |
| Supreme Consulting Limited | Information & communication | 2005 |
| Suprima Limited | Wholesale & retail | 2004 |
| Sure Yachting Limited | Professional & scientific | 2006 |
| Surface Solutions Group Ltd | Other services | 2003 |
| Sutton Building & Design Limited | Construction | 2021 |
| Swan FS Limited | Administrative & support | 2018 |
| Sway Bowmen | Arts & recreation | 2010 |
| Sway Estates Limited | Real estate | 2018 |
| Sway Park (Management) Limited | Households | 1984 |
| Sway Youth Centre | Hospitality | 2007 |
| Sweet B Health Care Ltd | Health & social care | 2025 |
| Sweet Lizzy Limited | Wholesale & retail | 2013 |
| Swift Fencing & Landscaping Ltd | Administrative & support | 2024 |
| Sylvan Landscaping Limited | Administrative & support | 2021 |
| Symposia Ltd | Information & communication | 2016 |
| Synergetic Contact Centre Solutions Limited | Professional & scientific | 2025 |
| Syntiro Property Developments Limited | Real estate | 2010 |
| Systemic Success Consulting Limited | Professional & scientific | 2023 |
| T J K Cornwall Limited | Professional & scientific | 2005 |
| T. C. L. Construction Limited | Construction | 1970 |
| T. V. NIX Limited | Real estate | 1992 |
| TA Bright Eyes Limited | Professional & scientific | 2026 |
| Tanya Ingleton Evolution Limited | Wholesale & retail | 2023 |
| TARGET4GREEN Educational Consultancy and Training Ltd | Education | 2015 |
| Task Alliance Ltd | Professional & scientific | 2025 |
| Taybull Ltd | Information & communication | 2019 |
| Taybullpay Ltd | Information & communication | 2021 |
| Taylin Marine Limited | Water & waste | 2018 |
| Taylor Chester Limited | Real estate | 2018 |
| Taylor'D Training Services Ltd | Education | 2025 |
| Teal Construction Southern Limited | Construction | 2021 |
| Team Awesome Ltd | Arts & recreation | 2016 |
| Team Building Solutions Limited | Professional & scientific | 2011 |
| Team Gekko Limited | Manufacturing | 2025 |
| Team SK2 Ltd | Information & communication | 2014 |
| Teambuilding Events Limited | Arts & recreation | 2009 |
| Teamworking International Limited | Professional & scientific | 1995 |
| Temple Bar Developments (Hampshire) Limited | Construction | 1999 |
| Tenementa Limited | Hospitality | 2015 |
| Tern Energy Limited | Mining & quarrying | 2023 |
| Thakeham Close Freehold Ltd | Households | 2015 |
| Thames RIB Charter Limited | Extraterritorial | 2021 |
| Thatched Cottage Hotel Limited | Hospitality | 2016 |
| THE Absent Pony Ltd | Wholesale & retail | 2023 |
| THE Academy for Relationships Ltd | Information & communication | 2019 |
| THE Anxious MUM Club MG Ltd | Information & communication | 2024 |
| THE Apartment (U.K.) Limited | Wholesale & retail | 2006 |
| THE Assisted Bathing Company Ltd | Manufacturing | 2015 |
| THE Association of Independent Music Limited | Other services | 1998 |
| THE Big Bath Company Limited | Wholesale & retail | 2005 |
| THE Biscuit House Limited | Wholesale & retail | 2014 |
| THE Boatel Ltd | Hospitality | 2015 |
| THE Brew Forest Limited | Manufacturing | 2021 |
| THE Brew Forest Pilsner Company Limited | Manufacturing | 2023 |
| THE Cavalier Group Ltd | Financial services | 2017 |
| THE Cellar Tasting House & Wine Merchant Limited | Hospitality | 2014 |
| THE Centre for Social Innovation CIC | Other services | 2017 |
| THE Chandlery Ltd | Hospitality | 2016 |
| THE Cloth FOX Limited | Wholesale & retail | 2019 |
| THE Coastal Bakery Ltd | Hospitality | 2021 |
| THE Colour Sanctuary Limited | Other services | 2007 |
| THE Considered Group Limited | Professional & scientific | 2004 |
| THE Deli Kitchen Co. Ltd | Hospitality | 2022 |
| THE Dust Project | Health & social care | 2013 |
| THE Edible Plate Ltd | Hospitality | 2024 |
| THE Exmoor Branding Company Limited | Professional & scientific | 2017 |
| THE Ferry Boat Inn (Fambridge) Limited | Hospitality | 2019 |
| THE Forest Foodie Hampers Limited | Wholesale & retail | 2021 |
| THE Forest Foodie Limited | Hospitality | 2020 |
| THE Forest Gardeners Limited | Professional & scientific | 2013 |
| THE Furniture Depository Management Company Limited | Real estate | 2015 |
| THE Glowgetter Mentor Ltd | Administrative & support | 2025 |
| THE Golf GUY Ltd | Wholesale & retail | 2021 |
| THE Hidden Sanctuary Ltd | Health & social care | 2025 |
| THE HR Consultancy Academy Ltd | Extraterritorial | 2023 |
| THE HUT Mobile Bar Ltd | Hospitality | 2022 |
| THE Jolly Flat Co Ltd. | Real estate | 2015 |
| THE KBI Group Limited | Other services | 2023 |