| Star Cat Rescue | Other services | 2017 |
| Star Dinner Limited | Hospitality | 2024 |
| Star Garage (West Barkwith) Limited | Wholesale & retail | 2006 |
| Starling Agriculture Ltd | Agriculture & fishing | 2005 |
| Stephen Herron Associates Limited | Agriculture & fishing | 1998 |
| Stephen R Wilson Ltd | Professional & scientific | 2011 |
| Stimtech Limited | Professional & scientific | 2015 |
| Stock Aitken Limited | Extraterritorial | 2022 |
| Strelitzia Developments Ltd | Manufacturing | 2022 |
| Stress Engineering Solutions Limited | Professional & scientific | 2014 |
| Strong Controls and Automation Limited | Manufacturing | 2016 |
| Stuarts Construction Management Ltd | Construction | 2015 |
| Suss Microtec Ltd. | Manufacturing | 1984 |
| Svastha Lincs Community Interest Company | Other services | 2023 |
| Swanwick Holdings Ltd | Professional & scientific | 2016 |
| Synergy Boreholes Limited | Construction | 2007 |
| T E Duckering Limited | Other services | 2009 |
| T N FOX 14 Limited | Arts & recreation | 2022 |
| T.M. Strawson Limited | Extraterritorial | 1997 |
| T.M.S. Plastics Limited | Manufacturing | 2007 |
| T.W.Hayes,Limited | Agriculture & fishing | 1946 |
| TA Associate Services (Lincs) Limited | Professional & scientific | 2010 |
| TA Tech Limited | Information & communication | 2021 |
| TAG Insulation Group Limited | Construction | 2021 |
| TAG Insulation Limited | Construction | 2020 |
| Taisie Grant Ltd | Hospitality | 2020 |
| Tallfan Tool Hire Ltd | Construction | 2024 |
| Tamae Karate & Fitness Limited | Health & social care | 2003 |
| Tavistock Global Ltd | Wholesale & retail | 2013 |
| Taylor Aitken Group Ltd | Financial services | 2020 |
| Taylor Hedges Limited | Professional & scientific | 2015 |
| Taylor Raynes Limited | Professional & scientific | 2019 |
| Tcb's (Market Rasen) Limited | Construction | 2004 |
| Tealby Construction Limited | Construction | 2019 |
| Tealby Property Development Company Limited | Real estate | 2003 |
| Tealby Taxi Services Limited | Transport & logistics | 2017 |
| Techiesquad IT Limited | Administrative & support | 2017 |
| Technical Approval Ltd | Administrative & support | 2007 |
| Technical Document Services Limited | Professional & scientific | 1995 |
| Technicks Solutions Limited | Information & communication | 1996 |
| Technik Services Limited | Professional & scientific | 2022 |
| Temperate Property Limited | Construction | 2019 |
| TEN Gemina Services Limited | Extraterritorial | 2017 |
| Terratrain Limited | Construction | 2004 |
| THE Adam and EVE (Wragby) Limited | Hospitality | 2019 |
| THE Animal Dogtor Limited | Professional & scientific | 2017 |
| THE Attentionist Ltd | Professional & scientific | 2022 |
| THE Bistro Bar & Kitchen Limited | Hospitality | 2025 |
| THE Bourn LLP | | 2006 |
| THE Brews Bros Ltd | Manufacturing | 2017 |
| THE Brickpits Ltd | Arts & recreation | 2016 |
| THE Card Basement Limited | Wholesale & retail | 2026 |
| THE Cheese DEN Limited | Wholesale & retail | 2022 |
| THE Crown Glentham Ltd | Hospitality | 2026 |
| THE CTB Consultant Ltd | Professional & scientific | 2025 |
| THE Custard Club Ltd | Hospitality | 2025 |
| THE Farmyard Gym Ltd | Arts & recreation | 2023 |
| THE Food Awards Company Limited | Administrative & support | 2012 |
| THE Forge Advertising & Design Limited | Professional & scientific | 2010 |
| THE Gate of India (Market Rasen) Limited | Hospitality | 2017 |
| THE Greek Corner Shop Limited | Hospitality | 2024 |
| THE Greek Shack Limited | Hospitality | 2024 |
| THE Harley Flynn Group Limited | Construction | 2017 |
| THE Hatton Action Group CIC | Other services | 2023 |
| THE Haven Inn (2017) Limited | Hospitality | 2017 |
| THE Humberston PUB Company Limited | Hospitality | 2024 |
| THE International Register Management UK Limited | Other services | 2021 |
| THE IVY Wragby Limited | Hospitality | 2009 |
| THE Jackdaw's Nest Ltd | Wholesale & retail | 2019 |
| THE Kings Dish Limited | Wholesale & retail | 2014 |
| THE Kings Head (Tealby) Ltd | Hospitality | 2012 |
| THE Kitsman Ltd | Administrative & support | 2021 |
| THE Knife & Cork Ltd | Professional & scientific | 2019 |
| THE Latchets Property Limited | Households | 2005 |
| THE Laundry Room (UK) Limited | Wholesale & retail | 2006 |
| THE Lincolnshire Cheese Company Ltd | Wholesale & retail | 2025 |
| THE Lincolnshire Woodworker Limited | Manufacturing | 2025 |
| THE Nappy DEN Ltd | Wholesale & retail | 2020 |
| THE Old Barn Tealby Developments Ltd | Construction | 2022 |
| THE Olive (Lincs) Ltd | Real estate | 2020 |
| THE Olive Rooms (Lincs) Limited | Hospitality | 2020 |
| THE Roofing Corporation Limited | Construction | 2014 |
| THE Schitt Creek Paddle Company Limited | Professional & scientific | 2022 |
| THE Small Chef Ltd | Hospitality | 2025 |
| THE Thoresway Glebe Company | Extraterritorial | 1979 |
| THE Viking Way Garden Cafe & Gift Shop Limited | Wholesale & retail | 2020 |
| THE White Heather (CR) Ltd | Hospitality | 2018 |
| THE World of Wealth Limited | Professional & scientific | 2016 |
| Theobald-Dickson Holdings Limited | Financial services | 2016 |
| Thornton Road (North Owersby) Management Company Limited | Households | 2022 |
| Thorpe International Services Limited | Professional & scientific | 2019 |
| Through the Forest Limited | Professional & scientific | 2015 |
| Tidal Marketing Ltd | Professional & scientific | 2018 |
| TIE Logistics Group Ltd | Transport & logistics | 2017 |
| TIE Moto Logistics Ltd | Extraterritorial | 2016 |
| TIE Specialist Logistics Ltd | Transport & logistics | 2015 |
| Timmins Engineering and Construction Limited | Construction | 2019 |
| TJF Carpentry & Joinery Limited | Construction | 2006 |
| Tlsfx Limited | Manufacturing | 2004 |
| Tluda Leisure (Lincs) Limited | Hospitality | 2011 |