| Starbricks Properties Limited | Real estate | 2025 |
| Statesmen Sports Ltd | Arts & recreation | 2024 |
| Stepcorrectukinc Limited | Other services | 2023 |
| Stephen & Co Accountancy Limited | Professional & scientific | 2016 |
| Strollercise Basildon Limited | Arts & recreation | 2022 |
| Strollercise Limited | Arts & recreation | 2018 |
| Structural Fireproofing Contracts Limited | Construction | 2019 |
| Structural Membranes Solutions Limited | Extraterritorial | 2010 |
| Structural Sealant Contracts (Holding) Limited | Financial services | 2017 |
| Structural Sealant Contracts Limited | Construction | 2010 |
| Structural Waterproofing Contracts Limited | Construction | 2012 |
| Strutt Landscapes Ltd | Administrative & support | 2025 |
| Stuart Mitchell Builders Limited | Construction | 2016 |
| Sunnyside Farm JV Ltd | Construction | 2022 |
| Supply 2 Location Group Limited | Financial services | 2022 |
| Supply 2 Location Limited | Administrative & support | 2009 |
| Supply 2 Location Liverpool Limited | Administrative & support | 2022 |
| Suretech Interiors Limited | Construction | 2002 |
| Surge Plumbing & Electrical Solutions Ltd | Construction | 2025 |
| Swiftstream Solutions Ltd | Financial services | 2024 |
| Swilsonandsons Limited | Construction | 2018 |
| Swts LDN Ltd | Wholesale & retail | 2025 |
| Sylhet Dining Ltd | Hospitality | 2025 |
| Systems Management and Reliability Testing Limited | Professional & scientific | 1993 |
| T & L Access and Rigging Ltd | Information & communication | 2022 |
| T & N Interiors Limited | Construction | 2005 |
| T Everett Transport Holdings Limited | Financial services | 2018 |
| T Everett Transport Limited | Transport & logistics | 2018 |
| T.A. Plumbing and Heating Ltd | Construction | 2025 |
| T.Cern Limited | Construction | 2018 |
| Tanasa Limited | Transport & logistics | 2024 |
| Tarik Bedevi Creative Limited | Professional & scientific | 2017 |
| Taxclear Limited | Professional & scientific | 2025 |
| Taylor's Engineering Services Limited | Construction | 2014 |
| TB Cares Ltd | Health & social care | 2020 |
| TCE Consulting Ltd | Professional & scientific | 2025 |
| TD Wholesale Ltd | Wholesale & retail | 2024 |
| Tech Talent Identified Ltd | Administrative & support | 2017 |
| Technically Unique Ltd | Arts & recreation | 2024 |
| TEE Shot Clothing Ltd | Wholesale & retail | 2025 |
| Teebollz Consulting Limited | Construction | 2016 |
| Telvora Electronics Ltd | Wholesale & retail | 2026 |
| TFB Haulage Limited | Transport & logistics | 2014 |
| Thames Estuary Developments Limited | Real estate | 2000 |
| THE Arches Barbers Limited | Other services | 2015 |
| THE Backend Engineer Ltd | Professional & scientific | 2024 |
| THE Barn Events & Hire Ltd | Hospitality | 2025 |
| THE Bear Necessities Group Limited | Construction | 2015 |
| THE Beauty Muse Essex Ltd | Other services | 2025 |
| THE Cedar Hall Clinic Limited | Health & social care | 2008 |
| THE Charles James Developments Group Limited | Financial services | 2012 |
| THE Cheapest Mattress Limited | Wholesale & retail | 2017 |
| THE Childcare Trainers Ltd | Administrative & support | 2024 |
| THE CUP and Saucer Vintage Tea Room Ltd | Hospitality | 2021 |
| THE Dressing Room Stanford LE Hope Ltd | Wholesale & retail | 2019 |
| THE Fifth Court Limited | Wholesale & retail | 2025 |
| THE Formwork Company Limited | Construction | 2009 |
| THE Formwork Group Limited | Extraterritorial | 2017 |
| THE Gedai Limited | Wholesale & retail | 2019 |
| THE Georgian Import Company Ltd | Wholesale & retail | 2024 |
| THE Healthcare Accountant Ltd | Households | 2025 |
| THE Inspirational Learning Trust | Education | 2013 |
| THE London Electric Taxi Company Ltd | Transport & logistics | 2018 |
| THE London Road Coachworks Limited | Administrative & support | 2009 |
| THE Luxury Hamper Company Limited | Other services | 2019 |
| THE Nurturing Care Company Limited | Health & social care | 2022 |
| THE Old Regent Ltd | Other services | 2011 |
| THE REC Hub Limited | Administrative & support | 2018 |
| THE Reduced Height Company Limited | Arts & recreation | 2013 |
| THE Reduced Height Theatre Company Limited | Arts & recreation | 2015 |
| THE Rettendon Community Academy Community Interest Company | Education | 2009 |
| THE Swans Management Ltd | Households | 2018 |
| THE Universal Consultancy Limited | Professional & scientific | 2010 |
| THE View Residents Management Company Ltd | Households | 2023 |
| THE Warren (Hall Crescent) Management Company Limited | Households | 2026 |
| THE Warren Fishery Limited | Agriculture & fishing | 2008 |
| THE Whitelamb Trading Company Limited | Wholesale & retail | 2018 |
| THE Wing HUT Limited | Hospitality | 2025 |
| Thecollegeblueprint Ltd | Education | 2026 |
| THG Property Services Limited | Real estate | 2015 |
| Thurrock Christian Fellowship (Trustee) Limited | Professional & scientific | 2023 |
| Thurrock Construction Limited | Construction | 1997 |
| Thurrock Mencap Society | Other services | 2005 |
| Thurrock Supplies Limited | Wholesale & retail | 2006 |
| Thurrock Transport Limited | Real estate | 1956 |
| Thurrock Windows Limited | Construction | 2002 |
| Tickle's Dairies Limited | Real estate | 1963 |
| Tilbury Football Club Limited | Arts & recreation | 2000 |
| TJ Tattoo Removal Ltd | Other services | 2023 |
| TK Konsult Ltd | Real estate | 2015 |
| Tn&Dc Limited | Information & communication | 2020 |
| TNB Creative Ltd | Professional & scientific | 2025 |
| TNR Contractors Limited | Construction | 2009 |
| Toby Stokes Limited | Information & communication | 2015 |
| Tomkins Group Ltd | Professional & scientific | 2023 |
| Tool Sharp Limited | Agriculture & fishing | 2013 |
| Top Spec Floors Ltd | Construction | 2025 |
| Torbeelo Ltd | Health & social care | 2022 |
| Torrels Properties Limited | Real estate | 2018 |
| Total Caring Solutions Ltd | Health & social care | 2022 |