| Telebizz Ltd | Manufacturing | 2002 |
| Telehandler Solutions Limited | Construction | 2015 |
| Tellus Education Group Limited | Professional & scientific | 1995 |
| Tellus Group Ltd | Professional & scientific | 2003 |
| Teltec Communications Limited | Information & communication | 2008 |
| Tembo Engineering Services Ltd | Professional & scientific | 2025 |
| Templar Ace Group Ltd | Administrative & support | 2019 |
| Templer Construction Holdings Limited | Financial services | 2021 |
| Templer Construction Limited | Construction | 2015 |
| Templer Construction Management Limited | Construction | 2010 |
| TEN Florence Place Property Management Ltd | Real estate | 2025 |
| TEN Years Younger Exeter Ltd | Other services | 2014 |
| TEN Years Younger Holdings Ltd | Professional & scientific | 2009 |
| Ten/Ten Building and Roofing Ltd | Construction | 2023 |
| TEN6 Developments Ltd | Construction | 2025 |
| Tengu Digital Ltd | Professional & scientific | 2024 |
| Tenn Solutions Limited | Information & communication | 2003 |
| Tennet & Tennet Limited | Administrative & support | 2022 |
| Tenura Freeholds Limited | Real estate | 2024 |
| Tera Bite Ltd | Hospitality | 2023 |
| Teremokkids Ltd | Wholesale & retail | 2024 |
| Teresa Burnett Ltd | Health & social care | 2014 |
| Terra Firma Groundworks Limited | Professional & scientific | 2015 |
| Terra Nova Plymouth Ltd | Hospitality | 2024 |
| Terrain and Shores UK Ltd | Professional & scientific | 2025 |
| Terrova Ltd | Construction | 2026 |
| Terry Cundy Limited | Construction | 2026 |
| Terry Singleton Ltd | Other services | 2015 |
| Terry's Hosting Ltd | Information & communication | 2025 |
| Tess Motorcycles Limited | Wholesale & retail | 2022 |
| Test of English for Aviation Limited | Education | 2008 |
| Tetelestai Engineering Ltd | Manufacturing | 2026 |
| TEU Marketing Ltd | Administrative & support | 2018 |
| Tfah Ltd | Arts & recreation | 2024 |
| TFF Avionic & Electrical Services Limited | Manufacturing | 2016 |
| TGH Logistics Limited | Construction | 2017 |
| TGO Web Services Limited | Information & communication | 2012 |
| TGT 147 Ltd | Education | 2025 |
| TH Electronics Ltd | Professional & scientific | 2023 |
| Thaamira Ltd | Wholesale & retail | 2021 |
| Thai-Ish Limited | Hospitality | 2021 |
| Tharuny Food & Wine Ltd | Wholesale & retail | 2016 |
| That Seagull BOB Ltd | Information & communication | 2019 |
| THE 11+ Coach Ltd | Education | 2019 |
| THE 5+5 a Day C.I.C. | Manufacturing | 2016 |
| THE a Team Builders 1964 Ltd | Construction | 2019 |
| THE Academy of Excellence by Vanessa Jane Ltd | Education | 2018 |
| THE Achievement Network Limited | Professional & scientific | 1994 |
| THE Albion Community Project CIC | Education | 2022 |
| THE Albion Workshop CIC | Arts & recreation | 2018 |
| THE Alexandra Court Residents Management Association Limited | Households | 1990 |
| THE Angel & Crown PUB Ltd | Hospitality | 2019 |
| THE ARK Pet Centre (Plymouth) Limited | Wholesale & retail | 1997 |
| THE Artistic Duck Limited | Information & communication | 2012 |
| THE Astor Elliot Street Right to Manage Company Limited | Households | 2024 |
| THE B and B Collection Ltd | Hospitality | 2005 |
| THE BAC Bar Limited | Hospitality | 2011 |
| THE Back Centre Ltd | Wholesale & retail | 2019 |
| THE Backstreet Spot Ltd | Hospitality | 2024 |
| THE Bacon Club Ltd | Hospitality | 2014 |
| THE Bakery Company Limited | Households | 1994 |
| THE Banquet Company Limited | Hospitality | 2025 |
| THE Barn House Fitness Ltd | Arts & recreation | 2025 |
| THE Beauty Training Group Limited | Other services | 2016 |
| THE Bereavement Counselling Service (SW) Ltd | Health & social care | 2006 |
| THE Best From the Best Limited | Other services | 2025 |
| THE Big Banana Consultancy Ltd | Professional & scientific | 2026 |
| THE Big Family Community CIC | Other services | 2025 |
| THE Big Pine Limited | Wholesale & retail | 1997 |
| THE Big Rainbow Lick Ltd | Wholesale & retail | 2025 |
| THE Big Sleep Limited | Wholesale & retail | 1995 |
| THE Big Smiles Project CIC | Education | 2024 |
| THE Bike Cellar Ltd | Wholesale & retail | 2007 |
| THE Bird's Cage Ltd | Manufacturing | 2013 |
| THE Black Arrows SQD Ltd | Professional & scientific | 2014 |
| THE Boathouse Chinese Ltd | Hospitality | 2023 |
| THE Boconnoc Steam Fair Limited | Arts & recreation | 2004 |
| THE Boiler GUY Service and Repair Ltd | Construction | 2023 |
| THE Box Foundation | Administrative & support | 2019 |
| THE Brambles (Plymouth) NO.1 Management Company Limited | Households | 1995 |
| THE Business Finance Company Limited | Financial services | 2004 |
| THE Buzz Party Co Ltd | Administrative & support | 2024 |
| THE CAD MAN South West Ltd | Construction | 2019 |
| THE Caddy Club Ltd | Arts & recreation | 2024 |
| THE Caffeine Club Limited | Professional & scientific | 2006 |
| THE Camel (SW) Ltd | Hospitality | 2017 |
| THE Camel Plymouth Ltd | Hospitality | 2022 |
| THE Caradon Close Management Company Limited | Real estate | 2015 |
| THE Card Machine GUY Ltd | Administrative & support | 2025 |
| THE Cawsand Fort Management Company Limited | Real estate | 1987 |
| THE Cedars Management Company (Totnes) Limited | Households | 1980 |
| THE Chapel CSL Limited | Hospitality | 2022 |
| THE Chauffeur Club Ltd | Transport & logistics | 2018 |
| THE Chestnut Appeal for Men's Health Ltd | Health & social care | 2001 |
| THE Chic Relic Ltd | Other services | 2025 |
| THE Chintz Symposium Ltd | Hospitality | 2016 |
| THE Chits Inn Limited | Wholesale & retail | 2021 |
| THE Chromate Experts UK Ltd | Professional & scientific | 2025 |
| THE Cleanse Cabin Limited | Other services | 2025 |
| THE Coastal Coach Ltd | Professional & scientific | 2023 |