| THE Society of Will Writers (Services) Limited | Administrative & support | 2003 |
| THE Society of Will Writers and Estate Planning Practitioners | Other services | 1994 |
| THE Sorby Portfolio Limited | Real estate | 2022 |
| THE Spanish Boot Company Ltd | Wholesale & retail | 2017 |
| THE Spray Works (Lincoln) Limited | Wholesale & retail | 2024 |
| THE Stocks Barn LLP | | 2023 |
| THE Store X Limited | Wholesale & retail | 2015 |
| THE Swoon Society Limited | Wholesale & retail | 2025 |
| THE Systematic Thinker Ltd | Education | 2025 |
| THE Tanning Club Unit Ltd | Other services | 2025 |
| THE Technology Research Centre Limited | Professional & scientific | 2011 |
| THE Thames Group (UK) Limited | Financial services | 2010 |
| THE Till GUY Limited | Wholesale & retail | 2021 |
| THE Timber Cafe Limited | Hospitality | 2024 |
| THE Tiny Tavern Ltd | Hospitality | 2020 |
| THE Tipsy IMP Lcfc Limited | Wholesale & retail | 2023 |
| THE Tipsy IMP Limited | Wholesale & retail | 2022 |
| THE Travel Place Ltd | Administrative & support | 2026 |
| THE Travel Richer Group Limited | Administrative & support | 2023 |
| THE Treasure Hub Limited | Wholesale & retail | 2025 |
| THE Trusted Mortgage Company Limited | Financial services | 2021 |
| THE Vaizey Clinic Limited | Health & social care | 2011 |
| THE Valley of Plenty Ltd | Wholesale & retail | 2020 |
| THE Van & MAN Company Limited | Transport & logistics | 2024 |
| THE Vedanta Way Limited | Hospitality | 2018 |
| THE Vehicle Coach Limited | Information & communication | 2026 |
| THE Viable Housing Project Ltd | Real estate | 2021 |
| THE Vickers (Ingham) Management Ltd | Real estate | 2026 |
| THE Vinyl Factory Limited | Financial services | 2001 |
| THE Wallacea Trust | Arts & recreation | 1999 |
| THE Warehouse RTM Company Limited | Real estate | 2010 |
| THE Warrant Officer Ltd | Real estate | 2015 |
| THE Water House Holdings Limited | Real estate | 2015 |
| THE Waterfords Residents Management Company Ltd | Households | 2013 |
| THE Web Guys Network Limited | Information & communication | 2016 |
| THE Wellness Network CIC | Health & social care | 2022 |
| THE Welton Group Ltd | Construction | 2023 |
| THE Wendy House (UK) Limited | Health & social care | 2009 |
| THE Whispered Guide Ltd | Other services | 2026 |
| THE White Hart Inn North Scarle Limited | Hospitality | 2022 |
| THE Wildings Project CIC | Agriculture & fishing | 2024 |
| THE Willows (Wellingore) Management Company Ltd | Households | 2023 |
| THE Willows Leisure Ltd | Hospitality | 2026 |
| THE Window and Lock Doctor Ltd | Households | 2015 |
| THE Wizz Group Limited | Professional & scientific | 2023 |
| THE Wool Loft Ltd. | Wholesale & retail | 2012 |
| THE Workshop Rasen Limited | Wholesale & retail | 2018 |
| THE Zareba Transport Ltd | Transport & logistics | 2019 |
| Thefad Limited | Information & communication | 2009 |
| Thegreedyimp Ltd | Hospitality | 2024 |
| Thehealthieru Limited | Health & social care | 2024 |
| Theland Agriculture Ltd | Agriculture & fishing | 2025 |
| Themobile-Mechanic Ltd | Wholesale & retail | 2022 |
| Theplantemporium Ltd | Agriculture & fishing | 2023 |
| Therabon Ecom Ltd | Wholesale & retail | 2025 |
| Therapy Consulting Limited | Professional & scientific | 2012 |
| Therapy Corporation Ltd | Health & social care | 2023 |
| Therapy for Life Limited | Professional & scientific | 2013 |
| Thermal Insulated Panel Installer Specialists Limited | Construction | 2023 |
| Thetradingturtles Ltd | Wholesale & retail | 2025 |
| Thewillsupermarket Ltd | Professional & scientific | 2013 |
| Thimothy Energy Solutions Ltd | Wholesale & retail | 2025 |
| Think Blue Solutions Limited | Information & communication | 2015 |
| Think IT Print IT Ltd | Manufacturing | 2019 |
| Think Well Consultants Ltd. | Professional & scientific | 2012 |
| Thinking in Colour Ltd | Health & social care | 2022 |
| This IS Wrestling Film Limited | Information & communication | 2018 |
| Thisa New Way Express Ltd | Wholesale & retail | 2026 |
| Thistle 44 Limited | Arts & recreation | 2021 |
| Thomas Birkett Holdings Limited | Administrative & support | 2015 |
| Thomas IND Limited | Health & social care | 2006 |
| Thomas Joseph Investments Ltd | Real estate | 2020 |
| Thomas Richards Ltd | Transport & logistics | 2023 |
| Thompson & Richardson (Financial Services) Lincoln Limited | Financial services | 1987 |
| Thompson Moore Craft Beers Ltd | Manufacturing | 2021 |
| Thor Digital Ltd | Professional & scientific | 2020 |
| Thor Trailers Limited | Administrative & support | 2019 |
| Thornalley Accountancy Limited | Professional & scientific | 2016 |
| Thorold Arms Property Company Limited | Real estate | 2017 |
| Thorpe Grange LLP | | 2011 |
| Thorpe Hill Ltd | Real estate | 2021 |
| Thorpe Lane Garages Limited | Wholesale & retail | 2002 |
| Thorpe Park (Lincoln) Management Company Ltd | Households | 2013 |
| Thoughtful Technology Limited | Information & communication | 2011 |
| Thoughtmix Online Services Limited | Professional & scientific | 2015 |
| Three a Haulage Ltd | Transport & logistics | 2024 |
| Three for Letting Limited | Real estate | 2020 |
| Three Pillars Training Limited | Education | 2025 |
| Threshold Studios Limited | Education | 2003 |
| Thrive Lifting Club Limited | Arts & recreation | 2025 |
| Thurgarton Lets Ltd | Manufacturing | 2002 |
| Thurgur Developments Limited | Construction | 2022 |
| Thurgur Properties Limited | Real estate | 2016 |
| Thurlby Leisure Limited | Arts & recreation | 2025 |
| Thurlby ST Hughs Management Co Ltd | Households | 1996 |
| Thurtle Medical Ltd | Health & social care | 2026 |
| TI Lincoln Ltd | Hospitality | 2025 |
| Tibolts Wholesale Limited | Wholesale & retail | 2007 |
| Tick HR Solutions Ltd | Administrative & support | 2018 |
| Tidy Hive Cleaning Services Ltd | Administrative & support | 2026 |