| Sussexomfs Limited | Health & social care | 2021 |
| SVB Media Limited | Information & communication | 2025 |
| Svdw (Alton) Management Limited | Real estate | 2014 |
| SVK Solutions Ltd | Information & communication | 2015 |
| SW Data Ltd | Information & communication | 2025 |
| SW Kent Ltd | Professional & scientific | 2025 |
| Swallow Estates Limited | Professional & scientific | 1985 |
| Swan Marketing Services Ltd | Professional & scientific | 2011 |
| Sweetdreams Confectionery Ltd | Manufacturing | 2017 |
| Swift Haul Limited | Transport & logistics | 2024 |
| Swift Regen Ltd | Professional & scientific | 2026 |
| Swift Security Company Limited | Administrative & support | 2025 |
| Swim Baby Ltd | Education | 2023 |
| Swim Line Ltd. | Other services | 2020 |
| Swimmers Corner Ltd | Education | 2021 |
| Switch Learning Ltd | Other services | 2023 |
| Switchfoot Accounting Limited | Professional & scientific | 2017 |
| Switchfoot Systems and Innovation LAB Limited | Professional & scientific | 2025 |
| Swizzex Limited | Wholesale & retail | 2017 |
| SWS Powder Coating Limited | Manufacturing | 2017 |
| Sylento Supplies Ltd | Wholesale & retail | 2026 |
| Sylvan Aero Ltd | Transport & logistics | 2024 |
| Sylvan Ridge Management Company Limited | Households | 1994 |
| Sync Your Health Ltd | Health & social care | 2023 |
| Syndicate Associates Limited | Construction | 2015 |
| Synergy Promotions North Limited | Administrative & support | 2010 |
| Synergy Promotions South Limited | Administrative & support | 2010 |
| Synergy Solution Services Ltd | Information & communication | 2025 |
| Syntech Recruitment Limited | Administrative & support | 2007 |
| Syon ARC Limited | Professional & scientific | 2021 |
| Systemico Limited | Extraterritorial | 2023 |
| Systems Assured Limited | Professional & scientific | 2001 |
| T & W Auto's Ltd | Wholesale & retail | 2025 |
| T H Electrical Services Ltd | Construction | 2021 |
| T&T Estates Ltd | Real estate | 2017 |
| T&T Goods Limited | Wholesale & retail | 2024 |
| T.C.W. Communication Limited | Information & communication | 1986 |
| Tadka Lounge Ltd | Hospitality | 2024 |
| Tajatad Limited | Wholesale & retail | 2014 |
| Tajatad Properties Limited | Wholesale & retail | 2015 |
| Talem Consulting Limited | Information & communication | 2009 |
| Talent Attraction.Ai Ltd | Information & communication | 2026 |
| Talented Athlete Academy Ltd | Arts & recreation | 2024 |
| Talk Ports Limited | Wholesale & retail | 2016 |
| Talk Technology Limited | Wholesale & retail | 2014 |
| Talking Food Limited | Professional & scientific | 2010 |
| Tamani JUA Properties Limited | Professional & scientific | 2001 |
| Tamarind Court Residents Association Limited | Real estate | 1977 |
| Tamerton FT Limited | Administrative & support | 2014 |
| Tammat Group Ltd | Construction | 2024 |
| Tampotech Limited | Manufacturing | 2009 |
| Tangent Facilities & Construction Ltd | Construction | 2012 |
| Tangerine Yard Limited | Administrative & support | 2020 |
| Tanglewood Developments Limited | Real estate | 2021 |
| Tanjecterly Ltd | Information & communication | 2019 |
| Tanoshi Car Events Ltd | Wholesale & retail | 2024 |
| Tanshire Holdings Limited | Real estate | 1992 |
| Tansi Packaging Solutions Limited | Wholesale & retail | 2010 |
| Tanya & Waled Travel UK Limited | Administrative & support | 2025 |
| Tapestry Business Consulting Ltd | Professional & scientific | 2010 |
| Taqdeer Global Trading Ltd | Wholesale & retail | 2025 |
| Targetfour Limited | Information & communication | 1986 |
| Tarpave Driveways Ltd | Construction | 2025 |
| Tarpave Driveways Trading Ltd | Construction | 2026 |
| Tarrant Court Management Limited | Households | 1991 |
| Taskala Limited | Professional & scientific | 2000 |
| Tasker Plumbing Supplies Limited | Wholesale & retail | 2025 |
| Tasmia Breast Care (UK) Ltd | Health & social care | 2013 |
| Tasmia-Asif Cancer Hospital & Research Centre C.I.C. | Health & social care | 2023 |
| Tawheed Consulting Limited | Professional & scientific | 2012 |
| Taxi 4 U Camberley Ltd | Transport & logistics | 2022 |
| Taylor Commercial Management Ltd | Professional & scientific | 2013 |
| Taylor Hall Recruitment Ltd | Administrative & support | 2017 |
| Taylor Virtual Assistance Ltd | Administrative & support | 2025 |
| Taylored Bricks Ltd | Hospitality | 2025 |
| Tayomet Ltd | Information & communication | 2020 |
| Tayvin 58 Limited | Households | 1996 |
| TB Solveig Ltd | Real estate | 2024 |
| TBE Services Limited | Administrative & support | 2023 |
| TBE Systems Limited | Construction | 2021 |
| Tbws Welding Supplies Limited | Wholesale & retail | 2018 |
| Tcb-Arrow Limited | Manufacturing | 1987 |
| TCH Tech Ltd | Information & communication | 2026 |
| TCL Holdco Limited | Administrative & support | 2023 |
| TDS Commercial Limited | Manufacturing | 2006 |
| TE International Ltd | Information & communication | 2023 |
| TE Solution Experts Ltd | Construction | 2026 |
| Teachitright Holdings Ltd | Administrative & support | 2017 |
| Teachitright Limited | Education | 2006 |
| Team Ashe Ltd | Construction | 2011 |
| Team Engineering Limited | Administrative & support | 2006 |
| Tech 2007 Limited | Construction | 2025 |
| Tech Ally NP Ltd | Information & communication | 2023 |
| Tech Leap Ltd | Information & communication | 2023 |
| Tech Trolley Ltd | Wholesale & retail | 2023 |
| Techarch Consulting Ltd. | Information & communication | 2012 |
| Techmodal Limited | Information & communication | 2005 |
| Techni-Pave Limited | Administrative & support | 2018 |
| Technical Refurbishment Limited | Manufacturing | 1995 |
| Technicool Solutions Limited | Construction | 2005 |