| Thamesdown Tyres Limited | Wholesale & retail | 1988 |
| Thameside Imaging Limited | Health & social care | 2019 |
| Thapa Properties Limited | Real estate | 2023 |
| Thapaji Ltd | Hospitality | 2023 |
| Thatching Supplies Limited | Construction | 2022 |
| THE 3RE Brothers Ltd | Hospitality | 2024 |
| THE 48 Hospitality Ltd | Hospitality | 2026 |
| THE 8 Bamboo Ltd | Hospitality | 2024 |
| THE A&H Collection Ltd | Real estate | 2026 |
| THE AB Sports Private Limited | Wholesale & retail | 2018 |
| THE Acorns RTM Company Ltd | Households | 2016 |
| THE Actor Rebellion Ltd | Education | 2023 |
| THE Adhesive Company (AHS) Limited | Wholesale & retail | 2002 |
| THE Advice Network Ltd | Financial services | 2020 |
| THE Archers (Highworth) Management Limited | Households | 1999 |
| THE Ardara Whiskey Company Limited | Financial services | 2023 |
| THE Arena Health & Fitness Swindon Ltd | Arts & recreation | 2019 |
| THE Argyle Commercial Centre Management Company Limited | Administrative & support | 1987 |
| THE Art and Web Company Ltd | Administrative & support | 2011 |
| THE Ashers Catering Ltd | Hospitality | 2025 |
| THE Asmarino Co. Limited | Wholesale & retail | 2004 |
| THE Authentic Punjabee Ltd | Hospitality | 2023 |
| THE Authentic Punjabee Samosa Factory Ltd | Hospitality | 2023 |
| THE Autoboss Swindon Ltd | Wholesale & retail | 2013 |
| THE Badru Cares Ltd | Health & social care | 2024 |
| THE Baking BEE Limited | Wholesale & retail | 2024 |
| THE Battery Shop (U.K.) Limited | Manufacturing | 2003 |
| THE Beaufort Brewery Management Company Limited | Real estate | 2014 |
| THE Beautia Aesthetics Academy Ltd | Education | 2021 |
| THE Beauty Gurus Associates Limited | Health & social care | 2018 |
| THE Beauty Gurus Limited | Health & social care | 2008 |
| THE Beeches Management (NO 12) Limited | Households | 1999 |
| THE Beehive Cafe Wroughton Ltd | Hospitality | 2022 |
| THE Bespoke Trade Collective Limited | Construction | 2025 |
| THE Big Adventure Club Limited | Education | 2001 |
| THE Biocharged Compost Company Ltd | Manufacturing | 2023 |
| THE Birdcage Hair and Beauty Salon Ltd | Other services | 2020 |
| THE Black Belt Code Community Interest Company | Arts & recreation | 2010 |
| THE Blewbury Building Company Limited | Construction | 2011 |
| THE Blue Kite Academy Trust | Education | 2015 |
| THE Boat Therapy Ltd | Administrative & support | 2019 |
| THE Body Cafe Limited | Other services | 2012 |
| THE Bookkeeping Centre Limited | Extraterritorial | 2005 |
| THE Bothy Gardens Holdings Limited | Financial services | 2026 |
| THE Bottle Factory Management Company Limited | Households | 2019 |
| THE Bounsall Partnership Ltd | Professional & scientific | 2010 |
| THE Bramptons Club Limited | Arts & recreation | 1991 |
| THE Brand of Boxing Ltd | Wholesale & retail | 2025 |
| THE British Window Cleaning Academy Limited | Extraterritorial | 1997 |
| THE Brushed Nest Ltd | Construction | 2026 |
| THE Bureau 4 Mortgage Advice Ltd | Professional & scientific | 2016 |
| THE Business Generation Group (U.K.) Limited | Professional & scientific | 2007 |
| THE Business Growth Group Ltd | Administrative & support | 2025 |
| THE Butchers Cafe Limited | Hospitality | 2022 |
| THE Cambridge Tutor Company Limited | Education | 2024 |
| THE CAN Film Ltd | Professional & scientific | 2021 |
| THE Candid Lens Ltd | Professional & scientific | 2025 |
| THE Care Show Ltd | Professional & scientific | 2025 |
| THE Carmoney Guys Ltd | Financial services | 2026 |
| THE Carpet Shop (Swindon) Limited | Wholesale & retail | 2009 |
| THE Carrot Corporation Ltd | Information & communication | 2025 |
| THE Catalyst Centre CIC | Real estate | 2025 |
| THE Cause Limited | Arts & recreation | 2002 |
| THE Celebration Vault Ltd | Arts & recreation | 2025 |
| THE CFO Centre Group Limited | Professional & scientific | 2014 |
| THE Chair Frame Company Ltd | Manufacturing | 2023 |
| THE Cheese Shop in Bradford on Avon Ltd | Wholesale & retail | 2014 |
| THE Cheriton (Old Town) Management Company Limited | Households | 2026 |
| THE Chicken Tree Cafe Ltd | Hospitality | 2024 |
| THE Chocolate Bar Limited | Manufacturing | 2015 |
| THE Cholesterol Coach Limited | Education | 2022 |
| THE Cider Press Management Limited | Households | 2023 |
| THE Cirencester Arena Company Limited | Hospitality | 2004 |
| THE Clean Spa Company Ltd. | Wholesale & retail | 2007 |
| THE Cleaning Company Cotswold Ltd | Administrative & support | 2025 |
| THE Clifton (Swindon) Limited | Hospitality | 2021 |
| THE Club at Cricklade Limited | Hospitality | 2008 |
| THE Coconut and Spice Ltd | Hospitality | 2021 |
| THE Commonweal School | Education | 2011 |
| THE Compliance Bird Ltd | Professional & scientific | 2024 |
| THE Confederation of Business Referral Associates Limited | Administrative & support | 2020 |
| THE Conversation Limited | Professional & scientific | 2025 |
| THE Cotswold Cider Company Ltd | Manufacturing | 2009 |
| THE Cotswold Hot TUB Company Ltd | Other services | 2026 |
| THE Cotswold Range Ltd | Arts & recreation | 2015 |
| THE Cotswolds Collective Ltd | Construction | 2025 |
| THE Cottage Dental & Implant Clinic Limited | Health & social care | 2008 |
| THE Cottage Nursery | Education | 2008 |
| THE Country House Department Limited | Real estate | 2019 |
| THE Courtyard (South Pavenhill Farm) Management Company Limited | Real estate | 2004 |
| THE Cove Entertainments Ltd | Administrative & support | 2025 |
| THE Crafting Room Ltd | Manufacturing | 2025 |
| THE Creative Bay (Graphic Design) Limited | Professional & scientific | 2014 |
| THE Crown Broad Hinton Limited | Hospitality | 2024 |
| THE Culturevators Ltd | Professional & scientific | 2025 |
| THE CUT Barber Shop Ltd | Other services | 2016 |
| THE Dapper Clinic Limited | Other services | 2018 |
| THE Dapper MAN 2 Limited | Real estate | 2018 |
| THE Dapper MAN Limited | Other services | 2015 |
| THE Dauntless Whisky Company Limited | Manufacturing | 2001 |