| Southam Gents Ltd | Other services | 2024 |
| Southam Heat and Water Ltd | Construction | 2026 |
| Southam Kebabs and Pizza Limited | Hospitality | 2025 |
| Southam Nails & Beauty Ltd | Other services | 2024 |
| Southam Primary Pre-School Ltd | Education | 2012 |
| Southam Rugby Union Football Club Limited | Arts & recreation | 2016 |
| Southam Windows Limited | Construction | 2014 |
| Spectrum Projects UK Ltd | Construction | 2009 |
| Speedyplus Transport&Logistics Ltd | Transport & logistics | 2013 |
| Spera Limited | Information & communication | 2003 |
| Spinney Construction Management Ltd | Construction | 2026 |
| Spitfire Real Estate Limited | Real estate | 2022 |
| Spoke and Hub Limited | Information & communication | 2023 |
| Sportlogicuk Limited | Administrative & support | 2018 |
| Spotted Harbury Ltd | Real estate | 2019 |
| Springs Property Enterprises Ltd | Real estate | 2023 |
| Spruce Retrofit Consulting Ltd | Professional & scientific | 2023 |
| SPW Programme Management Ltd | Professional & scientific | 2019 |
| Square Shirt Ltd | Information & communication | 2024 |
| Squib Consultancy Limited | Manufacturing | 2007 |
| Squirhill Limited | Administrative & support | 2018 |
| Stable Angel Limited | Manufacturing | 2025 |
| Stageclip Limited | Information & communication | 2017 |
| Stairways (Holdings) Limited | Professional & scientific | 1993 |
| Stairways (Midlands) Limited | Manufacturing | 1996 |
| Stalwart Contractors Limited | Construction | 2022 |
| Stanton Manor Ltd | Construction | 2019 |
| Stanton Storage Solutions Ltd | Information & communication | 2019 |
| STB Grannum Ltd | Health & social care | 2019 |
| Stealth Racing UK Limited | Wholesale & retail | 1999 |
| Steam & Clean Solutions Ltd | Administrative & support | 2020 |
| Stephen Barker Consulting Ltd | Wholesale & retail | 2019 |
| Steven Pammenter Engineering Services Limited | Professional & scientific | 2007 |
| Stitched UP Warwickshire Ltd | Wholesale & retail | 2015 |
| Stockton Auto Services Ltd | Wholesale & retail | 2022 |
| Stockton Rentals Limited | Hospitality | 2023 |
| Stoneythorpe Estates Limited | Financial services | 2020 |
| Stoneythorpe Limited | Agriculture & fishing | 2018 |
| Stowe Fields Management Company Limited | Households | 1998 |
| Stowe Valley Multi Academy Trust | Education | 2016 |
| Stratford Property Maintenance Ltd | Administrative & support | 2018 |
| Structural Calculations Ltd | Professional & scientific | 2015 |
| Summersault Two Limited | Professional & scientific | 2014 |
| Summit Machine Services Ltd | Manufacturing | 2013 |
| Sunny Days Group Limited | Health & social care | 2016 |
| Sunu Limited | Financial services | 2025 |
| Suregrowth Technologies Ltd | Professional & scientific | 2025 |
| Sutherpark Limited | Construction | 1990 |
| SV Detailing Limited | Wholesale & retail | 2020 |
| Swagg Limited | Professional & scientific | 2017 |
| Sweet Boutique (Southam) Limited | Wholesale & retail | 2015 |
| Sweetman Advisory Limited | Professional & scientific | 2026 |
| Swell Innovations Ltd | Professional & scientific | 2026 |
| Symphony Short Stays Ltd | Hospitality | 2020 |
| T & M Horbury Limited | Wholesale & retail | 2018 |
| Tacos EL PAP Ltd | Hospitality | 2020 |
| Tambourine Limited | Wholesale & retail | 2025 |
| TAP Enterprises Ltd. | Administrative & support | 2013 |
| Tarsus Residents Ltd | Households | 2022 |
| TEC Healthcare Limited | Other services | 2019 |
| Tech Step Limited | Manufacturing | 2010 |
| TEE Management Ltd | Professional & scientific | 2026 |
| Tegoli Properties Limited | Real estate | 2022 |
| Tellura Information Services Limited | Information & communication | 2004 |
| Testing HUT Limited | Professional & scientific | 2014 |
| TH and J Consulting Ltd | Professional & scientific | 2026 |
| Thanooj Food and Wine Ltd | Wholesale & retail | 2025 |
| THE Achievers Club Limited | Information & communication | 2017 |
| THE AMD Partnership Limited | Information & communication | 2000 |
| THE Artist PAY Ltd | Arts & recreation | 2025 |
| THE Bowling Green Southam Limited | Hospitality | 2012 |
| THE Brownfield Consultancy Ltd | Water & waste | 2012 |
| THE Campbells Property Hub Ltd | Real estate | 1995 |
| THE Draper Management Company Limited | Administrative & support | 2013 |
| THE Else Property Group LLP | | 2021 |
| THE Farmhouse at Grendon Ltd | Hospitality | 2024 |
| THE FOX and HEN (Southam) Ltd | Hospitality | 2025 |
| THE Grafter Collective Ltd | Wholesale & retail | 2019 |
| THE Grange Pre-School Ltd | Education | 2005 |
| THE Grove (Burton Dassett) Limited | Hospitality | 2023 |
| THE Heartspeed Organisation CIC | Education | 2025 |
| THE Hollybush (Priors Marsden) Ltd | Hospitality | 2018 |
| THE Leaflet Distribution Company Ltd | Administrative & support | 2017 |
| THE Little Luggage Company Ltd | Wholesale & retail | 2021 |
| THE Mentoring Executive Limited | Professional & scientific | 2014 |
| THE Merrie Lion Limited | Hospitality | 2011 |
| THE Mobile Motorbike Mechanic Limited | Administrative & support | 2016 |
| THE Mushroom Shed Ltd | Agriculture & fishing | 2022 |
| THE Olde Mint Limited | Hospitality | 2013 |
| THE P&S Thomson Family Limited | Wholesale & retail | 2023 |
| THE Paddock (Mill Lane) Management Company Limited | Households | 2021 |
| THE Paid UP Club Limited | Information & communication | 2024 |
| THE Redeemed Christian Church of GOD (Rccg) Kabod Chapel Rugby | Other services | 2025 |
| THE Residents of Oxford Street Limited | Households | 2004 |
| THE Shoddy Housewife Limited | Wholesale & retail | 2021 |
| THE Sisters of the Poor Child Jesus | Administrative & support | 2008 |
| THE Software Training Company Limited | Information & communication | 2002 |
| THE Spinney Group Ltd | Construction | 2026 |
| THE Tool Connection Holdings Ltd | Financial services | 2024 |
| THE Traditional Roofing Company (Warwick) Limited | Construction | 2024 |