| Stylishaj Limited | Transport & logistics | 2022 |
| Stylist Hair CUT Ltd | Other services | 2025 |
| Suchkats Ltd | Health & social care | 2013 |
| Sufc Hospitality Limited | Hospitality | 2025 |
| Sugar Crush Limited | Hospitality | 2016 |
| Suha Boutique Ltd | Wholesale & retail | 2025 |
| Sumanpaul Consulting Ltd | Health & social care | 2025 |
| Sumaya Locum Services Ltd | Wholesale & retail | 2023 |
| Summerview Buildings Limited | Construction | 2002 |
| Sunbeam Medical Group Ltd | Administrative & support | 2024 |
| Sunbed - Shop Studio B1 Ltd | Wholesale & retail | 2021 |
| Sunderland Bowl Limited | Arts & recreation | 2019 |
| Sunny Nails (Scunthorpe) Ltd | Other services | 2025 |
| Sunny Season Ltd | Hospitality | 2025 |
| Sunnyscunny Pizza Ltd | Hospitality | 2022 |
| Sunrise Scunthorpe Ltd | Hospitality | 2022 |
| Sunshine Education Centre Ltd | Education | 2024 |
| Super Movers After School Club Ltd | Arts & recreation | 2026 |
| Super Nails North Limited | Other services | 2016 |
| Super Sarnies Limited | Hospitality | 1998 |
| Supreme Support Ltd | Health & social care | 2015 |
| Suraiya P Ltd | Health & social care | 2022 |
| Surestep Group Ltd | Real estate | 2026 |
| Surma Secret Spices Limited | Manufacturing | 2006 |
| Surpass Limited | Construction | 1992 |
| Surrey & Berkshire Surgical Ltd | Health & social care | 2019 |
| Surrey & Hampshire Medical Imaging Ltd | Health & social care | 2018 |
| Surrey Colorectal Limited | Health & social care | 2018 |
| Surrey Medical Clinic Limited | Health & social care | 2019 |
| Surrey Neuroimaging Ltd | Health & social care | 2019 |
| Surrey Surgery & Orthopaedics Ltd | Health & social care | 2019 |
| Surv Mortgages Ltd | Financial services | 2024 |
| Surveyzone Services Limited | Professional & scientific | 1993 |
| Sutton Project Management Limited | Manufacturing | 2004 |
| SW10KAT Limited | Transport & logistics | 2025 |
| Swan Celebrancy Services Ltd | Administrative & support | 2021 |
| Swift Online Services Ltd | Information & communication | 2026 |
| Sycamore Farm Stays Ltd | Hospitality | 2023 |
| Symbolglen Limited | Wholesale & retail | 1982 |
| Symes Bains Broomer Limited | Professional & scientific | 2018 |
| Systemise Fulfilment Ltd | Wholesale & retail | 2015 |
| SYX Rail Limited | Professional & scientific | 2019 |
| SZ Super Market Ltd | Wholesale & retail | 2013 |
| Szybkitrans Ltd | Transport & logistics | 2024 |
| T & T'S Properties Ltd | Real estate | 2021 |
| T B Electrical South Yorkshire Ltd | Construction | 2026 |
| T Barker Agricultural Services Ltd | Agriculture & fishing | 2023 |
| T F Butchers Ltd | Manufacturing | 2016 |
| T J Alloys Ltd | Wholesale & retail | 2014 |
| T Seed Therapies Limited | Health & social care | 2017 |
| T T Direct Ltd | Wholesale & retail | 2022 |
| T&A Trans Ltd | Transport & logistics | 2014 |
| T&R Property Srvice Ltd | Real estate | 2025 |
| T-Tec Automotive Limited | Wholesale & retail | 2022 |
| T.E.A. ALL IN-1 Group Ltd | Wholesale & retail | 2026 |
| T.E.A. Logistics Ltd | Transport & logistics | 2022 |
| T.Freemantle Limited | Manufacturing | 1996 |
| T.Khan's Enterprises Ltd | Hospitality | 2025 |
| T.L.P. Ground Investigations Limited | Professional & scientific | 2003 |
| T.M.P Site Services Ltd | Agriculture & fishing | 2016 |
| T2H Joinery Ltd | Manufacturing | 2018 |
| TA Automotive Ltd | Wholesale & retail | 2026 |
| TAA Medical Imaging Services Limited | Health & social care | 2021 |
| Tabby Taxi Ltd | Transport & logistics | 2026 |
| Tabco Ltd | Wholesale & retail | 2013 |
| Tacho Data Solutions Limited | Information & communication | 2015 |
| Tachograph Data Limited | Transport & logistics | 2007 |
| TAG Truck Ltd | Transport & logistics | 2025 |
| TAJ Pound Plus Ltd | Wholesale & retail | 2022 |
| Talasey Group Limited | Financial services | 2016 |
| Talasey Ltd | Wholesale & retail | 2004 |
| Talbot & Newell Healthcare Limited | Health & social care | 2022 |
| Talu Property Ltd | Real estate | 2023 |
| TAM TAM Property Ltd | Real estate | 2020 |
| Tamaradox Bar and Cafe Ltd | Hospitality | 2017 |
| Tamo Medical Limited | Health & social care | 2016 |
| Tangled Fibres Ltd. | Manufacturing | 2022 |
| Tank Master Limited | Manufacturing | 2020 |
| Tanram Limited | Construction | 2022 |
| Tantini Training & Empowerment CIC | Education | 2025 |
| TANZIL13 Limited | Hospitality | 2023 |
| Tapakey Ltd | Information & communication | 2013 |
| Tapakey Solutions Limited | Information & communication | 2015 |
| Taper Traffic Management Limited | Administrative & support | 2026 |
| Tapley Holdings Ltd | Construction | 1999 |
| Taqa Nutrition Limited | Real estate | 2024 |
| Taqana Barber Ltd | Other services | 2023 |
| Tarafo Bay Limited | Construction | 2021 |
| Tashev Limited | Transport & logistics | 2025 |
| Task Communications Limited | Information & communication | 2022 |
| Tasou Properties Limited | Construction | 2009 |
| Tasty Kabab House Ltd | Hospitality | 2024 |
| Taurino Holdings Ltd | Financial services | 2026 |
| TAW (Ripley) Ltd. | Administrative & support | 2010 |
| Taylor & Benson Ltd | Construction | 2025 |
| Taylor Homes (Lincs 2) Limited | Construction | 2014 |
| Taylor Homes (Lincs) Ltd | Construction | 2010 |
| TB Building & Plastering Ltd | Construction | 2025 |
| TB Technology Europe Limited | Manufacturing | 2011 |
| TC Designs Ltd | Wholesale & retail | 2025 |