| THE Seabreeze Tropical Shack Limited | Other services | 2019 |
| THE Sharlotte Management Company Limited | Households | 2004 |
| THE Shepherd & Dog (Rochford) Limited | Hospitality | 2017 |
| THE Shoes Molehill Ltd | Construction | 2024 |
| THE Social Diary Ltd | Administrative & support | 2021 |
| THE Stallion Properties & Investment Company Limited | Wholesale & retail | 2019 |
| THE Stitch Edit Limited | Wholesale & retail | 2025 |
| THE Storage Equipment Centre Group Ltd | Professional & scientific | 2013 |
| THE Straitsup Limited | Administrative & support | 2016 |
| THE Sunflower Community Project | Health & social care | 2021 |
| THE Sussex Gardens Freehold Company Limited | Professional & scientific | 2004 |
| THE Sussex Gardens RTM Company Limited | Professional & scientific | 2004 |
| THE Tea Factory Limited | Wholesale & retail | 2004 |
| THE Tommy Jones Project CIC | Health & social care | 2025 |
| THE Underbelly 101 Ltd | Arts & recreation | 2026 |
| THE Vehicle Training Specialists Ltd | Education | 2025 |
| THE Ventura UK Group Limited | Other services | 2021 |
| THE Virtual Beauty School Ltd | Education | 2025 |
| THE Wand Lite Company Limited | Manufacturing | 2013 |
| THE Warehouse Essex Ltd | Other services | 2024 |
| THE Wavee Media Ltd | Information & communication | 2025 |
| THE Wedding Lodge Ltd | Hospitality | 2023 |
| THE Wedding Lounge (London) Limited | Other services | 2002 |
| THE Wellspring Practice Ltd | Health & social care | 2023 |
| THE White Admiral Ltd | Hospitality | 2022 |
| THE Whitley Court Management Company Limited | Households | 1988 |
| THE Whytes Management Company Limited | Households | 2005 |
| THE Willow Tree Nursery School Bidford Limited | Education | 2013 |
| THE Woodlands (Watnall) Management Company Limited | Households | 2005 |
| THE Yellow Floor CIC | Arts & recreation | 2025 |
| The-Vines Fresh Food Hub Ltd | Wholesale & retail | 2026 |
| Theaquarius Ltd | Construction | 2020 |
| Theatre Place RTM Company Limited | Households | 2015 |
| Thedatacrunch Limited | Administrative & support | 2025 |
| Thedeluxehair Ltd | Other services | 2025 |
| Theedam Electrics Ltd | Construction | 2015 |
| Theedam Property Holdings Ltd | Real estate | 2026 |
| Thegrace Healthcare Limited | Health & social care | 2022 |
| Thehair Therapy Limited | Wholesale & retail | 2026 |
| Theluxecleanco Ltd | Administrative & support | 2025 |
| Them Upstairs Ltd | Professional & scientific | 2024 |
| Themirra Ltd | Information & communication | 2026 |
| Thenotsoquietman Ltd | Information & communication | 2025 |
| Theodore Sophia Limited | Professional & scientific | 2021 |
| Theregemporium Ltd | Manufacturing | 2025 |
| Thermalseal UK Ltd | Construction | 2024 |
| Theta Plus Ltd | Wholesale & retail | 2019 |
| Theuniqueprints Ltd | Manufacturing | 2021 |
| Theydon Timber Company Limited | Wholesale & retail | 1997 |
| Thingbook Ltd | Information & communication | 2016 |
| Thinking Binaries Limited | Information & communication | 2006 |
| Third Actel Management Limited | Real estate | 1983 |
| Thirteen Petals Limited | Hospitality | 2022 |
| This IS ME Mentoring Ltd | Education | 2020 |
| Thorley Environmental Systems Limited | Construction | 1992 |
| Thorngrove Court Management Co. Limited | Households | 1991 |
| Thorpe LEA (Great Chesterford) Management Company Limited | Households | 2017 |
| Three Browning Limited | Households | 2024 |
| Three Frames Ltd | Professional & scientific | 2026 |
| Three Pivots Limited | Professional & scientific | 2023 |
| Three Twinkling Stars Nursery Limited | Health & social care | 2025 |
| Three White Horses Ltd | Hospitality | 2023 |
| Thrift Vintage Wholesale Ltd | Wholesale & retail | 2022 |
| Thrill Two Birds Ltd | Hospitality | 2021 |
| Thrishool Ltd | Health & social care | 2023 |
| Thrive & Tally Ltd | Professional & scientific | 2025 |
| Thrive Better Living Limited | Health & social care | 2023 |
| Thrive Healthcare Limited | Administrative & support | 2016 |
| THRIVE31 Limited | Education | 2019 |
| Throttle Hub Limited | Information & communication | 2014 |
| Thruborder Ltd | Administrative & support | 2023 |
| TI Global Trans Limited | Financial services | 2020 |
| TI3 Global Ltd | Wholesale & retail | 2017 |
| Tiamcg Consulting Ltd | Professional & scientific | 2026 |
| Tian XI Ltd | Real estate | 2022 |
| Tiara's Limited | Wholesale & retail | 2012 |
| Tico Contractors Ltd | Construction | 2016 |
| Tielek Systems (UK) Ltd | Information & communication | 2010 |
| Tieps Limited | Wholesale & retail | 2015 |
| TIG Building Supplies Ltd | Wholesale & retail | 2025 |
| Tikvah Services Limited | Health & social care | 2016 |
| Tilbrook Estates Limited | Real estate | 2021 |
| Tilika Auto Ltd | Wholesale & retail | 2021 |
| Tilleul Limited | Households | 1996 |
| Tilley R Limited | Wholesale & retail | 2004 |
| TIM Brothers Limited | Real estate | 2018 |
| TIM Group Enterprise Ltd | Education | 2023 |
| Time for Change AM Ltd | Administrative & support | 2018 |
| Timesen Limited | Administrative & support | 2019 |
| Timkontan Ltd | Professional & scientific | 2023 |
| Tintawo and Sons Limited | Manufacturing | 2019 |
| Tiptree Gardens Residents Association Limited | Households | 2002 |
| Titan Bulk Haulage Ltd | Transport & logistics | 2013 |
| Titan Glazing Contractors Ltd | Manufacturing | 2019 |
| Titan Glazing Ltd | Manufacturing | 2017 |
| Titan Independent Traders Ltd | Financial services | 2024 |
| Titan Media Ltd | Professional & scientific | 2020 |
| Titan Recycling Ltd | Wholesale & retail | 2024 |
| Titan Steel Fabrications Ltd | Manufacturing | 2024 |
| Titan Waste Solutions Ltd | Water & waste | 2019 |