| Tactical Prints Ltd | Manufacturing | 2026 |
| Tada Consultancy Ltd | Administrative & support | 2025 |
| Tadhunter Consultants Limited | Professional & scientific | 2024 |
| Tadhunter Ltd | Professional & scientific | 2023 |
| Tagprint Digital Limited | Wholesale & retail | 2012 |
| Tailor Made Design Services Group Limited | Administrative & support | 2026 |
| Tailor Made Design Services Limited | Construction | 2019 |
| Tailored Wood Ltd | Construction | 2021 |
| Tails Therapy Ltd | Education | 2023 |
| Takhdir Limited | Hospitality | 2018 |
| Takooba Ltd. | Administrative & support | 2010 |
| Takuhe Consultants Limited | Administrative & support | 2015 |
| Talbot and Muir Limited | Financial services | 1993 |
| Talent Solutions (Europe) Ltd | Administrative & support | 2016 |
| Talentus Limited | Professional & scientific | 2010 |
| Talk EAT Laugh Limited | Hospitality | 2015 |
| Talk Results Limited | Administrative & support | 2009 |
| TALK2GENIE Ltd | Professional & scientific | 2024 |
| Tallut Strategies Limited | Wholesale & retail | 2011 |
| Tamar Retail Limited | Wholesale & retail | 2007 |
| Tamarind Property Limited | Administrative & support | 2007 |
| Taminorie Limited | Health & social care | 2012 |
| Tamper Specialty Coffee UK Ltd | Wholesale & retail | 2026 |
| Tanakamason Limited | Public administration | 2023 |
| Tandoori Nights Catering Limited | Hospitality | 2026 |
| Tandoori Nights SP Ltd | Hospitality | 2025 |
| Tank Express Ltd. | Wholesale & retail | 2010 |
| Tanners Farm Trading Limited | Agriculture & fishing | 2019 |
| Tarka Edinburgh Holdings Limited | Financial services | 2022 |
| Tarka Edinburgh Limited | Hospitality | 2022 |
| Tarka Edinburgh Retail Limited | Real estate | 2024 |
| Tarka International Limited | Hospitality | 2023 |
| Tarka UK Property Limited | Financial services | 2022 |
| Tarrant Investments (Shrewton) Limited | Professional & scientific | 1988 |
| Tasmead Ltd | Professional & scientific | 2023 |
| Taste Hospitality Ltd | Hospitality | 2022 |
| Tastro Ltd | Information & communication | 2020 |
| Tatners Street Kitchen Limited | Hospitality | 2022 |
| Tattenham Corner Residents' Association Limited | Households | 1999 |
| Tawny Drive (Birdham) Management Company Limited | Households | 2016 |
| Tax'D Secretarial Services Limited | Administrative & support | 2025 |
| Taxa Publishing Ltd | Professional & scientific | 2010 |
| Taxbusters Ltd | Professional & scientific | 1995 |
| Taydale Properties Limited | Real estate | 1999 |
| Taylen Developments Limited | Construction | 2020 |
| Taylor & Co Lettings Limited | Real estate | 2020 |
| Taylor -Weir Consultants Limited | Administrative & support | 2012 |
| Taylor Energy Services Limited | Mining & quarrying | 2005 |
| Taylor Gatehouse Limited | Financial services | 2013 |
| Taylor Grice Projects Ltd | Professional & scientific | 2021 |
| Taylor Made Devon Limited | Wholesale & retail | 2005 |
| Taylor Milburn Limited | Real estate | 2011 |
| Tbns-It Limited | Information & communication | 2016 |
| TC UK Services Ltd | Real estate | 2021 |
| Tcare Group Limited | Financial services | 2020 |
| TCM Land Ltd | Real estate | 2020 |
| TD Bxng Limited | Information & communication | 2026 |
| Tea Times Holdings Limited | Professional & scientific | 2007 |
| Tea Times Trading Limited | Wholesale & retail | 2007 |
| Teabag Chihuahua Excelsior Ltd | Hospitality | 2022 |
| Teabag Chihuahua Limited | Hospitality | 2003 |
| Teabag Chihuahua Management Company Ltd | Professional & scientific | 2017 |
| Teachtech Solutions Limited | Administrative & support | 2016 |
| Teal Financial Consultancy Limited | Professional & scientific | 2016 |
| Teal Management Limited | Households | 2010 |
| Team Entrepreneurs Limited | Administrative & support | 2016 |
| Team Forces Foundation | Arts & recreation | 2011 |
| Team Forces Funding Limited | Administrative & support | 2010 |
| Team STF UK Limited | Administrative & support | 2024 |
| Team U Limited | Professional & scientific | 2022 |
| Team West Limited | Hospitality | 1994 |
| Team Y Limited | Real estate | 2024 |
| Teamname Ltd | Arts & recreation | 2025 |
| Tec-Safe Ltd | Wholesale & retail | 2011 |
| Tech Heat Ltd | Construction | 2014 |
| Techcrew Limited | Other services | 2009 |
| Techno Cipher Limited | Information & communication | 2016 |
| Techspring Limited | Professional & scientific | 2013 |
| TED Consulting (UK) Limited | Professional & scientific | 2008 |
| Tedaisy Affinity Services Limited | Financial services | 2013 |
| Tedaisy Claims Limited | Administrative & support | 2019 |
| Tedaisy Insurance Brokers Limited | Financial services | 2016 |
| Tedaisy Insurance Group Ltd | Financial services | 2015 |
| Tedaisy Services Limited | Financial services | 2022 |
| Tedaisy Technologies Ltd | Information & communication | 2022 |
| Tedaisy Underwriting Limited | Financial services | 2009 |
| Tee-Time (SW) Limited | Hospitality | 2025 |
| Teewhys Global Enterprise & Consultancy Ltd | Information & communication | 2025 |
| Teffont Aviation Limited | Other services | 2012 |
| Teffont Joinery Ltd | Construction | 2025 |
| Teffont Woodlands Limited | Agriculture & fishing | 2006 |
| Tekgen Dynamics Ltd | Information & communication | 2024 |
| Tekum Group Ltd | Administrative & support | 2025 |
| Tele-Rehab Ltd | Information & communication | 2021 |
| Telos Advisory Limited | Professional & scientific | 2025 |
| Temple Quay Pension Trustees Limited | Financial services | 2006 |
| Templeton Walker Limited | Construction | 2002 |
| Tempo Defence Consultancy Ltd | Professional & scientific | 2025 |
| Temporary Facilities Ltd | Extraterritorial | 2018 |
| TEN - 8 Ltd | Wholesale & retail | 2021 |