| Stephen Brennan Developments Limited | Construction | 2007 |
| Stephen Gresty R.O.I. Limited | Professional & scientific | 2007 |
| Steve Whitewick Limited | Construction | 2004 |
| Steve Woolston & SON Limited | Transport & logistics | 2003 |
| Stevens Developments Limited | Construction | 2006 |
| Sthapit Consultants Limited | Professional & scientific | 2023 |
| Stockbridge Designs Limited | Construction | 1995 |
| Stockbridge Gallery Limited | Wholesale & retail | 2000 |
| Stockwell Forest Products Limited | Wholesale & retail | 2001 |
| Stoneham Developments Limited | Wholesale & retail | 1980 |
| Stoneham Homes Limited | Wholesale & retail | 1986 |
| Stonehenge Services Limited | Construction | 1991 |
| Stormpetrel Limited | Hospitality | 2007 |
| Stps Engineering Limited | Manufacturing | 2005 |
| STR Human Resource Services Limited | Professional & scientific | 1998 |
| Strategic Maintenance Ltd | Professional & scientific | 2006 |
| Stratton Brown Consulting Ltd | Information & communication | 2018 |
| Stream-Lead Limited | Administrative & support | 2025 |
| Street Level Media Ltd. | Administrative & support | 2002 |
| Struan Financial Management Limited | Financial services | 2005 |
| Structural Drawing Services Ltd | Professional & scientific | 2003 |
| Stuarts of Leigh Limited | Wholesale & retail | 2019 |
| Studio 49 Limited | Other services | 2003 |
| Stylewood Developments Limited | Financial services | 2000 |
| Sun Hung Chang Limited | Wholesale & retail | 2005 |
| Sundale Computing Limited | Information & communication | 1991 |
| Sunflower Software Limited | Information & communication | 1998 |
| Sunrise Stained Glass Limited | Manufacturing | 2003 |
| Sunshine Conservatory Company Limited | Construction | 2001 |
| Sunshine Graphics Ltd | Information & communication | 1993 |
| Superlift UK Limited | Professional & scientific | 2006 |
| Superwire Education Ltd | Wholesale & retail | 2025 |
| Superyacht Projects Limited | Administrative & support | 2007 |
| Sure Safe Fire Systems Limited | Manufacturing | 1999 |
| Surf Interactive Ltd | Information & communication | 2003 |
| Surfaces Reconstruction (Parkstone) Limited | | 1973 |
| SW Facilities Ltd | Construction | 2018 |
| Sway Butchers Limited | Wholesale & retail | 2003 |
| Swaythling Assured Homes PLC | Extraterritorial | 1993 |
| Swissafrik (UK) Ltd | Transport & logistics | 2025 |
| Switch IT on Ltd. | Information & communication | 1998 |
| Sykes Land Management Limited | Professional & scientific | 2003 |
| Systex UK Limited | Professional & scientific | 1998 |
| T & G Brother Limited | Wholesale & retail | 2007 |
| T & M Findley Limited | Administrative & support | 2007 |
| T Byrne Plastering Limited | Construction | 2002 |
| TAJ Technologies Limited | Information & communication | 2018 |
| Talking Telescopes Limited | Administrative & support | 2003 |
| Tall Ships Adventures Limited | Arts & recreation | 2003 |
| Tall Ships Limited | Arts & recreation | 1993 |
| Tallon Properties Limited | Real estate | 2011 |
| Tang, Bentley and Jackson Limited | Professional & scientific | 2005 |
| Taste of Amsterdam Limited | Wholesale & retail | 2000 |
| Taste of the New Forest Limited | Professional & scientific | 2007 |
| Tasty Burger House Ltd | Hospitality | 2026 |
| Tconsult Ltd | Professional & scientific | 2003 |
| TDP Sports and Entertainment Projects Limited | Professional & scientific | 2004 |
| Teaantiques.Com Limited | Wholesale & retail | 2004 |
| Team Communications Limited | Other services | 2003 |
| Teame Construction Limited | Construction | 2002 |
| Tech Astra Limited | Information & communication | 2018 |
| Tecknowledge Support Ltd | Information & communication | 2006 |
| Telectronics Electrical Supplies Limited | Wholesale & retail | 1999 |
| Templar Healthcare Solutions PVT Ltd | Administrative & support | 2019 |
| Temporary Site Management Limited | Professional & scientific | 2000 |
| Tenantry Farms | | 1981 |
| Test Valley Interiors Ltd | Construction | 2021 |
| Test Valley Trout Farming Ltd | Professional & scientific | 1986 |
| THE Alto Marketing Group Limited | Professional & scientific | 2011 |
| THE Alton College Foundation | Education | 1999 |
| THE ARK Conference Centre Limited | Hospitality | 1998 |
| THE Aspex Visual Arts Trust Limited | Education | 1991 |
| THE Barn and Barbell Ltd | Arts & recreation | 2026 |
| THE Brendoncare Foundation | Health & social care | 1984 |
| THE British Alpine SKI School (Morzine) Limited | Arts & recreation | 2003 |
| THE British Deer Society | Professional & scientific | 1997 |
| THE Brockenhurst and Sway EAR Clinic Limited | Health & social care | 2017 |
| THE Carpetsmith Limited | Other services | 2006 |
| THE Casbrook Practice Limited | Professional & scientific | 2006 |
| THE Clovelly Bay Company Limited | Arts & recreation | 1988 |
| THE Coaching Clinic Limited | Professional & scientific | 2000 |
| THE Coaching Works (UK) Limited | Other services | 2003 |
| THE Coal Exchange (Emsworth) Limited | Hospitality | 2011 |
| THE Coffee Company Limited | Professional & scientific | 2000 |
| THE Corn Loft Limited | Education | 1994 |
| THE Courtyard Church Street Limited | Administrative & support | 2007 |
| THE Curious Chef Company Limited | Hospitality | 2017 |
| THE Design and Interiors Recruitment Company Ltd | Administrative & support | 2006 |
| THE Development & Training Co. Ltd | Professional & scientific | 2000 |
| THE Digital South Limited | Professional & scientific | 2004 |
| THE E.C. Roberts Centre | Health & social care | 1997 |
| THE Enlex Group Ukeig | | 2007 |
| THE Environment Centre (TEC) | Professional & scientific | 1993 |
| THE Farnborough Hill Trust | Education | 1994 |
| THE Fitzherbert Road Partnership | | 1987 |
| THE Franciscan Consultancy Limited | Professional & scientific | 2003 |
| THE GMS Protean Group Ltd | Construction | 2023 |
| THE Goods Lift Company Limited | Construction | 2003 |
| THE Grayshott Drapery Company Ltd | Real estate | 2020 |
| THE Henson Consultancy (Europe) Ltd | Professional & scientific | 2005 |