| Stealth Horse Transport Limited | Transport & logistics | 2017 |
| Stealth Horse Transport SW Ltd | Transport & logistics | 2025 |
| Stealth Sales and Boarding Ltd | Agriculture & fishing | 2022 |
| Stealth Transport South West Limited | Transport & logistics | 2021 |
| Steel Pencil Limited | Professional & scientific | 2013 |
| Steelropecentral Limited | Wholesale & retail | 2005 |
| Stenner Limited | Manufacturing | 2009 |
| Steve Shapter Electrical Services Ltd | Professional & scientific | 2014 |
| Stevens Gannon & Baker Limited | Information & communication | 2019 |
| Stevenstone (Exmouth) Flat Management Co. Limited | Households | 1973 |
| Stillwell Wise Holdings Ltd | Information & communication | 2023 |
| Stilwell Joinery Limited | Manufacturing | 2008 |
| Stoneman Building Services Limited | Construction | 2021 |
| Stoneman Haulage Limited | Extraterritorial | 2014 |
| Stoneman Services (SW) Ltd | Extraterritorial | 2020 |
| Stoner Management Limited | Professional & scientific | 2013 |
| Stoodleigh Village Shop Limited | Wholesale & retail | 2024 |
| Strand Caravans Limited | Real estate | 2005 |
| Strand Stores Limited | Hospitality | 2022 |
| Stratos 3 Limited | Manufacturing | 2025 |
| Stratosphere Investments LLP | | 2011 |
| Streamline (SW) Limited | Construction | 2019 |
| Streem Media Ltd | Information & communication | 2003 |
| Stuart Hagley Ltd | Construction | 2013 |
| Stuckey (SW) Limited | Administrative & support | 2013 |
| Stuckey Watts Property Ltd | Households | 2026 |
| Studio Bastien Ltd | Professional & scientific | 2020 |
| Style Stitch Limited | Manufacturing | 1992 |
| Sujoti Investments Limited | Real estate | 1997 |
| Sun Houses Owners Ltd | Real estate | 2016 |
| Sunnybrook Farm Retreat Ltd | Health & social care | 2016 |
| Sunnyside House Management Limited | Real estate | 2015 |
| Supernova (SW) Ltd | Information & communication | 2022 |
| Supply Journey Consulting Ltd | Wholesale & retail | 2022 |
| Sustainable Agricultural Holdings Limited | Financial services | 2013 |
| Sustainable Tapes and Labels Ltd | Wholesale & retail | 2022 |
| Sustainable Tiverton CIC | Education | 2021 |
| SW Sales Skills Limited | Information & communication | 2024 |
| SW Science Limited | Education | 2023 |
| SW Soil Solutions Ltd | Construction | 2023 |
| Sweetheart by AJ Limited | Professional & scientific | 2021 |
| Switch the UPF Limited | Information & communication | 2026 |
| Sword and Fiddle Productions Limited | Information & communication | 2022 |
| Sydeglamp Limited | Hospitality | 2021 |
| Sydewind Limited | Energy | 2011 |
| T & G Agricultural Engineering Ltd | Manufacturing | 2022 |
| T & M Commercials Limited | Wholesale & retail | 1997 |
| T C Heywood Limited | Wholesale & retail | 2012 |
| T&J Property Limited | Real estate | 2015 |
| TAG Management Consultancy Services Ltd | Professional & scientific | 2007 |
| Takle Building Limited | Construction | 2003 |
| Takle Timber Frame Ltd | Construction | 2022 |
| Tamar Specialist Brushes Limited | Manufacturing | 2015 |
| Tango Press Ltd | Wholesale & retail | 2025 |
| Tania Howarth Advisory Limited | Professional & scientific | 2020 |
| Tarka View Management Company Limited | Households | 2017 |
| Tattoo GUY Limited | Administrative & support | 2012 |
| Technology in Action Group Limited | Professional & scientific | 1987 |
| Teign Valley Catering Limited | Hospitality | 2009 |
| Teknofix Ltd | Wholesale & retail | 1999 |
| Teksolv Limited | Information & communication | 1998 |
| Temple Technologies Ltd | Information & communication | 2011 |
| TEX MEX Food Limited | Hospitality | 2024 |
| THE Backpack Barber Ltd | Other services | 2020 |
| THE Brand Informer Limited | Professional & scientific | 2012 |
| THE Butts Farm Business Centre Limited | Real estate | 2014 |
| THE Cellar PUB Restaurant Ltd | Hospitality | 2025 |
| THE Conversation Space Ltd. | Administrative & support | 2014 |
| THE Copse (Mayfair) Management Company Limited | Households | 2019 |
| THE Culmex Group Ltd | Financial services | 2023 |
| THE Flickering Cauldron & Kettle Limited | Wholesale & retail | 2023 |
| THE Flickering Cauldron Limited | Wholesale & retail | 2020 |
| THE Ginger PIG Catering Company Ltd | Hospitality | 2025 |
| THE Ginger PIG Sweet Treats Ltd | Hospitality | 2024 |
| THE Glades (Tiverton) Management Company Limited | Real estate | 2002 |
| THE Grand Western Canal Association Limited | Other services | 1997 |
| THE Grange Block 1 Flat Manco Limited | Households | 2022 |
| THE Grange Open Space Management Company Limited | Households | 2022 |
| THE Green Fund Ltd | Professional & scientific | 2007 |
| THE Home Mole Limited | Administrative & support | 2014 |
| THE Independent Coffee Trader Ltd | Hospitality | 2012 |
| THE Land and Planning Consultancy Limited | Real estate | 2013 |
| THE Littledart Company Limited | Wholesale & retail | 2008 |
| THE Manse Freehold Company Ltd. | Real estate | 2024 |
| THE Mills (Devon) Limited | Real estate | 2020 |
| THE Moorhayes Park Open Space Management Company Limited | Real estate | 2009 |
| THE Morris Minor Million Register Limited | Arts & recreation | 2025 |
| THE Mortgage Shop (Exeter) Limited | Financial services | 1995 |
| THE New Leaf (SW) Ltd | Wholesale & retail | 2022 |
| THE Old Clay Pits Limited | Construction | 2025 |
| THE Old Dairy Park Street Tiverton Management Company Limited | Households | 2018 |
| THE Old Heathcoat School Community Centre (King Street Tiverton) Limited | Professional & scientific | 1997 |
| THE Old Honey BEE Farm Limited | Construction | 2019 |
| THE Olde Coach House Management Company (Tiverton) Limited | Real estate | 1994 |
| THE Oxygen Agency Ltd | Professional & scientific | 2003 |
| THE Palmerston Trustee Company Limited | Financial services | 1992 |
| THE R&R Marketing Hub Ltd | Professional & scientific | 2025 |
| THE Rowans (Seaton) Management Company Limited | Households | 2017 |
| THE Software Bakery Ltd | Information & communication | 2025 |
| THE South West Research Company Ltd | Professional & scientific | 2011 |