| Stortford Healthcare Ltd | Health & social care | 2023 |
| Stothert & Pitt Limited | Professional & scientific | 2000 |
| Strategic Heating Ltd | Construction | 2021 |
| Stratford Homes Limited | Professional & scientific | 1987 |
| Strawson Group Developments Limited | Real estate | 2008 |
| Strawson Group Investments Limited | Real estate | 2008 |
| Strawson Investments Limited | Real estate | 2001 |
| Strawson J4M8 Limited | Real estate | 2000 |
| Strawson Management Limited | Real estate | 1997 |
| Strawson Property Developments Limited | Financial services | 2021 |
| Strawson Property Investments Limited | Financial services | 2021 |
| Strawson Property Limited | Real estate | 2001 |
| Strawson Trustees Limited | Professional & scientific | 2017 |
| Strawsons Property Limited | Extraterritorial | 2006 |
| Strictly Detailed Limited | Wholesale & retail | 2020 |
| Strydom Limited | Arts & recreation | 2023 |
| Stuart Ackron Ltd | Real estate | 1977 |
| Sturton Window Company Ltd | Construction | 2026 |
| Styring & Sons Ltd | Agriculture & fishing | 2013 |
| Subsub Limited | Information & communication | 2005 |
| Sucheta Consultancy Limited | Hospitality | 2022 |
| SUE Nickson Limited | Financial services | 2013 |
| Summit Signs Ltd | Professional & scientific | 2022 |
| Summit Vending Services Ltd | Wholesale & retail | 2026 |
| Sunrise Doncaster Ltd | Hospitality | 2021 |
| Sunshine Mobile Limited | Information & communication | 2018 |
| Supporting Companions Ltd | Health & social care | 2025 |
| SUR LE Terrain Limited | Administrative & support | 2023 |
| Survey International Realty Limited | Real estate | 2016 |
| Sutton Grange Farming Limited | Agriculture & fishing | 2017 |
| Sutton Grange Services Limited | Agriculture & fishing | 2012 |
| SW Performance Remaps Ltd | Wholesale & retail | 2022 |
| Swat Locks Ltd | Wholesale & retail | 2024 |
| Sweet Pea's Childminding Limited | Education | 2017 |
| Sweet Spot Retford Ltd. | Wholesale & retail | 2023 |
| Swift Financial Solutions Limited | Financial services | 2024 |
| Syllabus Training Solutions Limited | Education | 2025 |
| Syme Solutions Limited | Administrative & support | 2016 |
| T D Greenhalgh Developments Ltd | Construction | 2023 |
| T&M Investment Holdings Ltd | Real estate | 2019 |
| T.C. World Limited | Real estate | 2003 |
| TA Hall Associates Limited | Administrative & support | 2020 |
| Tag-Eco Ltd | Construction | 2024 |
| Taggas Energy Limited | Construction | 2024 |
| Taggas Ltd | Construction | 2015 |
| Tahan Transport Ltd | Health & social care | 2013 |
| Tailor Made Garden Renovations Limited | Administrative & support | 2020 |
| Take 2 Adventure Limited | Arts & recreation | 2017 |
| Tall Trees Park Ltd | Hospitality | 2022 |
| Talulah Ltd | Professional & scientific | 2021 |
| Taninges Properties Limited | Real estate | 2000 |
| Tanmalsh Ltd | Health & social care | 2025 |
| Tarlemn Ltd | Professional & scientific | 2021 |
| Tasker Partnership Limited | Agriculture & fishing | 2021 |
| Tawnagh Livestock Limited | Agriculture & fishing | 2012 |
| Taylor Loom Consultants Ltd | Professional & scientific | 2019 |
| Taylor Made Homes Groundworks and Building Ltd | Construction | 2023 |
| Taylor Made Homes Yorkshire Ltd | Construction | 2018 |
| Taylor Skelton Ltd | Construction | 2024 |
| Tcml Publishing Limited | Information & communication | 2017 |
| TD Developments (Notts) Limited | Real estate | 2021 |
| Tech IT Training Limited | Information & communication | 2025 |
| Tech-Green Limited | Professional & scientific | 2012 |
| Techloft Group Limited | Wholesale & retail | 2025 |
| Technical Mechanics Ltd | Professional & scientific | 2012 |
| Technikool Limited | Construction | 2024 |
| TEK Care Team Limited | Extraterritorial | 2019 |
| TEK Property Holdings Limited | Real estate | 2026 |
| TEK White Lining Limited | Other services | 2019 |
| Teknik Engineering Limited | Professional & scientific | 2023 |
| TEL Track Ltd | Professional & scientific | 2021 |
| Terry Hayes Haulage Limited | Transport & logistics | 2006 |
| Tfkm Limited | Manufacturing | 2025 |
| TG Holdings and Investments Limited | Real estate | 2018 |
| THAIBOW1 Ltd | Hospitality | 2023 |
| That Concept Ltd | Professional & scientific | 2017 |
| Thaymar Limited | Agriculture & fishing | 1997 |
| THE Axholme Firewood Company Ltd | Wholesale & retail | 2011 |
| THE Bald Barber Ltd | Other services | 2007 |
| THE Big Country House Ltd | Hospitality | 2007 |
| THE Boat Inn (Hayton) Limited | Hospitality | 2022 |
| THE Brambles (Retford) Management Company Limited | Households | 2013 |
| THE Bullion Safe Ltd | Information & communication | 2025 |
| THE Cheese Boutique Ltd | Wholesale & retail | 2024 |
| THE Coaching Company Ltd | Professional & scientific | 2016 |
| THE Cocktail Pickers Club Ltd | Wholesale & retail | 2016 |
| THE Coffee Shop & Bakery Ltd | Hospitality | 2026 |
| THE Collective Exposed Ltd | Information & communication | 2025 |
| THE Craft Travel Company Limited | Administrative & support | 2018 |
| THE Crags Construction Company Limited | Construction | 2008 |
| THE Discount Corporation Limited | Extraterritorial | 2011 |
| THE Dragonfly & the Humming Bird CIC | Health & social care | 2021 |
| THE Education and Skills Consultancy Limited | Education | 2014 |
| THE Elizabethan Academy Trust | Education | 2012 |
| THE Equipment Valuation Company Limited | Information & communication | 2000 |
| THE Experience Collective Limited | Arts & recreation | 2010 |
| THE Finance and Business Loan Company Ltd | Financial services | 2015 |
| THE First Response Team (UK) Limited | Other services | 2004 |
| THE Fluidconnections Company (U.K.) Ltd | Wholesale & retail | 1998 |
| THE Focus Collection Ltd | Professional & scientific | 2013 |