| Stokescb Holding Ltd | Financial services | 2020 |
| Stone-Houses Limited | Construction | 1982 |
| Stonehouse Property Limited | Hospitality | 2022 |
| Stonerose Treasury Limited | Information & communication | 2015 |
| Stonetech UK Limited | Construction | 1998 |
| Stoneyford Developments Ltd | Construction | 2018 |
| Stork of Stamford Ltd | Wholesale & retail | 2023 |
| Storm Bathrooms Limited | Construction | 2009 |
| Storm Style Ltd | Wholesale & retail | 2022 |
| Story's Properties Limited | Real estate | 2020 |
| STR Food Solutions Ltd | Hospitality | 2023 |
| Strategic Power Limited | Energy | 2011 |
| Strategic Resources Limited | Professional & scientific | 1995 |
| Strawman Creative Ltd | Professional & scientific | 2014 |
| Stripe & Bloom Ltd | Professional & scientific | 2025 |
| Stubbs Industries Ltd | Wholesale & retail | 2011 |
| Studentcircle Letting Ltd | Real estate | 2016 |
| Studio DUE UK Ltd | Wholesale & retail | 2004 |
| Sunflower Solar Rentals Limited | Administrative & support | 2023 |
| Supa Innovations Limited | Administrative & support | 2019 |
| Supersede Contract Ltd | Professional & scientific | 2024 |
| Superspace Group Ltd | Information & communication | 2021 |
| Surrey Overland Limited | Transport & logistics | 2000 |
| Surus Property Limited | Real estate | 2016 |
| Sutherland Walk Developments Limited | Construction | 1985 |
| SW Travel Partnerships Limited | Professional & scientific | 2020 |
| SW2 Plumbing & Heating Ltd | Construction | 2021 |
| Swan Analytical UK Limited | Wholesale & retail | 2009 |
| Sweet PEA Asset Management Ltd | Financial services | 2022 |
| Swimtt Ltd | Arts & recreation | 2025 |
| Switchboard.Ai Ltd | Administrative & support | 2021 |
| Swnl Property Ltd | Real estate | 2024 |
| SY Dental Limited | Health & social care | 2015 |
| Sycamore Close (Whaplode) Management Company Limited | Households | 2021 |
| T & FJ Limited | Professional & scientific | 2015 |
| T J Electrical & Mechanical Contracting Ltd | Construction | 2022 |
| T W Barker Limited | Professional & scientific | 2011 |
| T. F. Prestige Cars Limited | Administrative & support | 2021 |
| T.J. Electrical Engineers & Contractors Limited | Construction | 1984 |
| T.P. Gilman Limited | Agriculture & fishing | 1976 |
| T.P.Gilman Nominees Limited | Professional & scientific | 1985 |
| Tailored Escapes Ltd | Administrative & support | 2019 |
| Tails N Whiskers Ltd | Wholesale & retail | 2022 |
| Tallington Holdings Limited | Professional & scientific | 2004 |
| Tallington Lakes Land Limited | Administrative & support | 2013 |
| Tallington Lakes Limited | Arts & recreation | 1981 |
| Tallington Lakes Restaurant & Bar Limited | Hospitality | 2013 |
| Tallington Lakes Sales Limited | Arts & recreation | 2015 |
| Tallington Lakes Site Limited | Arts & recreation | 2015 |
| Tallington Taverns Ltd | Hospitality | 2017 |
| Tally D Holdings Ltd | Financial services | 2023 |
| Tatonic Limited | Financial services | 2006 |
| Taurean Recordings Limited | Information & communication | 1983 |
| Taylor & Taylor Exterior Cleaning Solutions Limited | Administrative & support | 2013 |
| Taylor Made Roofers Ltd | Construction | 2024 |
| Taylor Made Securities Ltd | Administrative & support | 2015 |
| Taylors Tourers Limited | Wholesale & retail | 2020 |
| TB Future Property Ltd | Real estate | 2023 |
| TCL Building Solutions Ltd | Construction | 2012 |
| Tea Ammo Group Limited | Wholesale & retail | 2019 |
| Tea Properties Limited | Real estate | 2019 |
| Tecmotive Limited | Manufacturing | 2013 |
| Telly Novella Productions Limited | Information & communication | 2013 |
| Temtrans Services Limited | Manufacturing | 1981 |
| Tendring INV NO 2 Ltd | Construction | 2020 |
| Tenetix Ltd | Professional & scientific | 2026 |
| Term Times Limited | Information & communication | 2013 |
| Terry Doyle Consulting Ltd | Professional & scientific | 2026 |
| Terwood Professional Services Ltd | Information & communication | 2017 |
| Tesseract Software Limited | Information & communication | 2023 |
| That Rebel House Ltd | Manufacturing | 2020 |
| THE Abbey Group Development Company Ltd | Construction | 2018 |
| THE Alfresco Living Group Ltd | Wholesale & retail | 2025 |
| THE Bertie Arms Ltd | Hospitality | 2016 |
| THE Bourne Dog Walker Ltd | Other services | 2021 |
| THE Bourne Pet Sitter Limited | Agriculture & fishing | 2024 |
| THE Brimscombe Port Development Company Limited | Construction | 2021 |
| THE Broad Street Practice Limited | Health & social care | 2011 |
| THE Burghley Veterinary Centres Ltd | Professional & scientific | 2006 |
| THE BUY2LET Doctors Ltd | Real estate | 2009 |
| THE Cambridge Catsitter Ltd | Other services | 2023 |
| THE Children’S Garden Stamford Limited | Education | 2026 |
| THE Chiropractic Hub Limited | Health & social care | 2015 |
| THE Classic Cameraship Company Ltd | Professional & scientific | 2021 |
| THE Comms Bar Ltd | Professional & scientific | 2024 |
| THE Conversation Stamford CIC | Education | 2019 |
| THE Copper Room Limited | Hospitality | 2018 |
| THE Croft (Stamford) Management Company Limited | Households | 1996 |
| THE Deeping BED Shop Ltd | Extraterritorial | 2022 |
| THE Dutch Barn Ltd | Arts & recreation | 2025 |
| THE Earths Richie's Gardening and Landscaping Ltd | Administrative & support | 2013 |
| THE Event Company (Stamford) Limited | Administrative & support | 2014 |
| THE FIG Tree Caterers Ltd | Hospitality | 2025 |
| THE Fitted Furniture Company (Stamford) Limited | Manufacturing | 2009 |
| THE Front Room Salon Limited | Other services | 2018 |
| THE George of Stamford Limited | Other services | 1995 |
| THE GIN Trailer Ltd | Hospitality | 2016 |
| THE GLO Lounge Collective Ltd | Other services | 2026 |
| THE Glow Formula Ltd | Wholesale & retail | 2023 |
| THE Green Bench Co Ltd | Manufacturing | 2026 |