| Teal Investing Limited | Real estate | 2025 |
| Teal Park Management Ltd | Real estate | 2011 |
| Teal Portfolio Group Limited | Financial services | 2024 |
| Team for Solution IT Services Ltd | Information & communication | 2025 |
| Teamfoster Limited | Arts & recreation | 2026 |
| Tean Butcher Limited | Extraterritorial | 2012 |
| Tech Mobile Hub Limited | Wholesale & retail | 2026 |
| Technical Event Services Limited | Information & communication | 2019 |
| Techno Systems MG Ltd | Wholesale & retail | 2024 |
| Technology and Business in One Limited | Information & communication | 2012 |
| Tedaniels Ltd | Hospitality | 2024 |
| TEE Pixels Ltd | Professional & scientific | 2024 |
| Teeder Limited | Financial services | 2021 |
| Teesta Bazar Ltd | Wholesale & retail | 2026 |
| TEF Construction Ltd | Manufacturing | 2024 |
| Tekas Food & Logistics Ltd | Wholesale & retail | 2026 |
| Telejax Limited | Real estate | 1984 |
| Telford Drive Newark Limited | Real estate | 2017 |
| Telixia Ltd | Information & communication | 2025 |
| Temp TEC Lincs Limited | Wholesale & retail | 2021 |
| Tempest Arms Coleby Ltd | Hospitality | 2025 |
| Templar Accounting & Business Support Services Limited | Professional & scientific | 2016 |
| Temple Bruer Consulting Ltd | Professional & scientific | 2021 |
| Temple Garth Limited | Real estate | 1997 |
| Templeman Financial Limited | Professional & scientific | 2012 |
| Tempo Four Limited | Wholesale & retail | 2023 |
| Temporal Computing Ltd | Professional & scientific | 2016 |
| Tempus Operational Consultancy Ltd | Other services | 2024 |
| Temqlo Ltd | Administrative & support | 2025 |
| TEN TEN Secretaries Ltd | Administrative & support | 2019 |
| Tended Ltd | Manufacturing | 2017 |
| Tension Twisted Realities Ltd | Arts & recreation | 2021 |
| Tepee Tent Hire Ltd | Arts & recreation | 2023 |
| Teraflow Group Limited | Other services | 2018 |
| Tereze Laing Limited | Health & social care | 2024 |
| Terrane Limited | Manufacturing | 2002 |
| Terravesta Assured Energy Crops Limited | Agriculture & fishing | 2011 |
| Terravesta Energy Limited | Wholesale & retail | 2012 |
| Terravesta Farms Limited | Agriculture & fishing | 2011 |
| Terravesta Holdings Limited | Professional & scientific | 2018 |
| Terravesta IP Limited | Professional & scientific | 2012 |
| Terravesta Limited | Professional & scientific | 2011 |
| Terravesta Management Limited | Professional & scientific | 2012 |
| Terravesta Products Ltd | Wholesale & retail | 2011 |
| Terry Jarnell Limited | Real estate | 2002 |
| Terry Property Investments Ltd | Real estate | 2026 |
| Terry Wong Associates LLP | | 2011 |
| Tessmill Limited | Water & waste | 2004 |
| TFF Solutions Ltd | Construction | 2026 |
| TFM Country Store Limited | Wholesale & retail | 2022 |
| TG & DM Watchorn Limited | Agriculture & fishing | 1987 |
| TG Simulation Ltd | Manufacturing | 2024 |
| TGI Hospitality Catering Ltd | Hospitality | 2024 |
| TGM Window Cleaning Limited | Administrative & support | 2024 |
| TGS Construction Services Ltd | Construction | 2020 |
| TH Intelligence Ltd | Information & communication | 2025 |
| Thacker Enterprises Limited | Administrative & support | 2022 |
| Thai Namchok Ltd | Hospitality | 2025 |
| Thai Taste Traditional Takeaway Ltd. | Hospitality | 2018 |
| Thailand NO 1 (Lincoln) Ltd | Hospitality | 2026 |
| Thailand NO 1 Restaurants Company Limited | Hospitality | 2019 |
| Thames Crest International Group Ltd | Wholesale & retail | 2024 |
| Thames Training & Development Limited | Health & social care | 2009 |
| Thatgirlhelp Limited | Education | 2026 |
| Thaya Holdings Ltd | Real estate | 2023 |
| THE 72 Publishing Limited | Information & communication | 2018 |
| THE 8 (Holdings) Group Ltd | Extraterritorial | 2020 |
| THE Abbey Access Centre | Education | 1999 |
| THE Acorn EBS Free School Ltd. | Education | 2011 |
| THE Adams Import Company Limited | Wholesale & retail | 2014 |
| THE Albion Works Ltd | Construction | 2025 |
| THE Alde Property Trust Limited | Other services | 1987 |
| THE Alde Trading Company Limited | Wholesale & retail | 2008 |
| THE Allium & Brassica Centre Limited | Extraterritorial | 1998 |
| THE Anaqa Suite Ltd | Real estate | 2026 |
| THE Aqua Hub Lincoln Ltd | Arts & recreation | 2026 |
| THE Association of Mental Fitness Coaches Ltd | Other services | 2025 |
| THE Asylum Players Ltd | Arts & recreation | 2023 |
| THE Autistic Company. CIC | Professional & scientific | 2025 |
| THE Avenue Interior Design Studio Ltd | Professional & scientific | 2022 |
| THE Baldwin FIC Limited | Real estate | 2024 |
| THE Barbers House Ltd | Other services | 2020 |
| THE Beauty Rooms Leadenham Ltd | Other services | 2022 |
| THE Bert Linnecor Sports Bar Limited | Arts & recreation | 2017 |
| THE Biological Knee Society | Health & social care | 2015 |
| THE Birchwood Laundrette Ltd | Other services | 2025 |
| THE Boat House Thorpe Limited | Hospitality | 2023 |
| THE Body and Mind Place Limited | Education | 2018 |
| THE Booking Project Ltd | Professional & scientific | 2015 |
| THE Botanic Studios Ltd | Other services | 2020 |
| THE Bottle & Glass Limited | Hospitality | 2021 |
| THE Branches Lincoln Ltd | Hospitality | 2026 |
| THE Bread Vault Ltd | Hospitality | 2023 |
| THE Brew Boys Ltd | Hospitality | 2023 |
| THE Bridal Boutique (Lincoln) Ltd | Wholesale & retail | 2012 |
| THE British Hamper Company Ltd | Manufacturing | 2013 |
| THE Bronze PIG Limited | Hospitality | 2013 |
| THE Brow Loft Limited | Other services | 2025 |
| THE Cafe at Hartsholme Park Limited | Hospitality | 2011 |
| THE Cambridge Knee Clinic Ltd | Health & social care | 2010 |