| Stationery International (United Kingdom) Limited | Other services | 2004 |
| Steelmain Enterprises Ltd | Financial services | 2000 |
| Stelmore Ltd | Real estate | 2000 |
| Stephen Anderson Architects Limited | Professional & scientific | 2007 |
| Stephen Andrews & Company Limited | Professional & scientific | 1998 |
| Stephen Ingham Joinery Limited | Construction | 2007 |
| Stephen KAY Limited | Energy | 2002 |
| Steve Horsman School of Motoring Ltd | Education | 2003 |
| Steve Layfield Windows Ltd | Construction | 2005 |
| Steve TAT 2 Limited | Arts & recreation | 2004 |
| Steve Wilson Autos Limited | Wholesale & retail | 2002 |
| Steve's Taxis (Carmarthen) Limited | Professional & scientific | 2004 |
| Steven Baines Osteopath Ltd | Health & social care | 2006 |
| Stewart Cross Limited | Construction | 2001 |
| Stock Park Flats (Newby Bridge) Limited | Households | 1979 |
| Stone Oak Limited | Administrative & support | 1975 |
| Stonewall Property Company Limited | Real estate | 2000 |
| Stotts Tours (Oldham) Limited | Transport & logistics | 1963 |
| STR Training Limited | Wholesale & retail | 2002 |
| Strategic Resource Limited | Professional & scientific | 2002 |
| Strategic Vision (E.U.) Ltd. | Professional & scientific | 2004 |
| Strathmore Business Services Limited | Professional & scientific | 2014 |
| Streamline Technology Solutions Limited | Information & communication | 2007 |
| Stridemode Ltd | Wholesale & retail | 2026 |
| Stuart Blackburn Ltd | Manufacturing | 2003 |
| Stuart Godfrey Computer Services Ltd | Information & communication | 2007 |
| Stuart Mulligan Limited | Financial services | 2006 |
| Style Cafe Limited | Wholesale & retail | 1918 |
| Style Construction Limited | Wholesale & retail | 1992 |
| SUB Surface Limited | Construction | 1972 |
| SUB Surface Midlands Limited | Construction | 1984 |
| SUB Surface North East Limited | Construction | 1990 |
| SUB Surface South East Limited | Construction | 2004 |
| Summit 360 Limited | Information & communication | 2006 |
| Sunnybank P.R.S. Limited | Health & social care | 1991 |
| Sunseekers Sunbeds Limited | Other services | 2003 |
| Superior Imports Limited | Wholesale & retail | 2000 |
| Suprafilt Limited | Manufacturing | 2002 |
| Surefire Communications | | 1995 |
| Surface Protection Coatings Limited | Construction | 2002 |
| Surfnet (U.K.) Limited | Extraterritorial | 1999 |
| Surfnet Computer Systems Limited | Information & communication | 1995 |
| Survey Holdings Limited | Professional & scientific | 2006 |
| Survey Operations Limited | Professional & scientific | 1991 |
| Swatch Limited | Wholesale & retail | 2006 |
| Sweet Dreams (Nelson) Limited | Manufacturing | 1988 |
| Sweet Orange Properties Ltd | Administrative & support | 2005 |
| Swift Tyres Limited | Wholesale & retail | 2007 |
| Syd's Fisheries Limited | Wholesale & retail | 1981 |
| T & S Hargreaves (Properties) Limited | Real estate | 2002 |
| T + J Conservatory and Window Centre Ltd. | Construction | 2002 |
| T H Auto Services Ltd | Wholesale & retail | 2004 |
| T P Challinor & SON Limited | Construction | 2006 |
| T Tiling Limited | Construction | 2005 |
| T.J. Shannon Limited | Real estate | 1927 |
| T1 Solutions Limited | Professional & scientific | 2001 |
| Tailored Systems Ltd | Manufacturing | 1998 |
| Talbot Lodge Limited | Households | 1973 |
| Talice PLC | Professional & scientific | 2000 |
| Tame Valley Properties Ltd | Professional & scientific | 2002 |
| Tame Valley Steelstock Ltd | Manufacturing | 2009 |
| Tameside, Oldham, Glossop and Stockport Mind Ltd | Health & social care | 2007 |
| Tan-Us.Net Ltd | Wholesale & retail | 2005 |
| Tapsell & West of Skipton Limited | Wholesale & retail | 2002 |
| Targamar Holdings Limited | Real estate | 2004 |
| Targetcount Limited | Real estate | 1994 |
| Tarleton Boat Yard Limited | Arts & recreation | 2005 |
| Tarleton GAS Limited | Construction | 2002 |
| Tawe Business Village (Swansea Phase II) Limited | Real estate | 1990 |
| Tawe Business Village (Swansea) Limited | Real estate | 1989 |
| Taylor Industrial Clutch Supplies Limited | Manufacturing | 1994 |
| Taylor Preece Developments Limited | Real estate | 2007 |
| Taylor, Robertson & Willett Ltd | Professional & scientific | 1999 |
| Taylors Legal Services Limited | Professional & scientific | 1991 |
| Tayyabah Bakery Limited | Manufacturing | 2000 |
| TDT Systems Limited | Information & communication | 1995 |
| Tech-World Computers Limited | Other services | 2005 |
| Techcare ICT Limited | Other services | 2005 |
| Techdale Ltd | Information & communication | 2002 |
| Technology Services Limited | Other services | 1984 |
| Techsprint Limited | Information & communication | 1994 |
| Templar Estates Limited | Professional & scientific | 2003 |
| Tere Liye Limited | Wholesale & retail | 2006 |
| Terracotta Facilities Limited | Financial services | 2015 |
| Terror-Fear Factory Limited | Administrative & support | 2001 |
| TES Environmental Services Limited | Water & waste | 1996 |
| Testdown Limited | Professional & scientific | 1984 |
| Textstyles UK Limited | Wholesale & retail | 2000 |
| Thames Asset Management Co. Limited | Real estate | 2000 |
| THE 706 Club Limited | Real estate | 1998 |
| THE Anna's Group Limited | Hospitality | 2006 |
| THE Blackpool Paint Company Limited | Wholesale & retail | 1993 |
| THE BOB Ward Physiotherapy and Rehabilitation Clinic Limited | Health & social care | 2003 |
| THE Bolton Interfaith Company | Information & communication | 2006 |
| THE Bowling Green (Leigh) Limited | Hospitality | 2005 |
| THE Capernwray Missionary Fellowship of Torchbearers | Hospitality | 1998 |
| THE Carpetman (Lancaster) Ltd. | Wholesale & retail | 2001 |
| THE Cellar Restaurant (Pendle) Ltd | Hospitality | 2003 |
| THE Cottontree Yarn Company Limited | Wholesale & retail | 1996 |
| THE Cresent Limited | Real estate | 1993 |