| Beechfield Landscaping Limited | Administrative & support | 2014 |
| Beehive Care & Training Group Ltd | Health & social care | 2024 |
| Belgrave Court (Taunton) Management Company Limited | Households | 2003 |
| Bell VUE Development Limited | Construction | 1998 |
| Bella Pizza (Honiton) Limited | Hospitality | 2007 |
| BEN Williams Contracting Ltd | Construction | 2022 |
| Benjamin Kittow Ltd | Agriculture & fishing | 2026 |
| Benjamin Upchurch Limited | Construction | 2020 |
| Berzerk Customs Limited | Other services | 2018 |
| Bespoke Garden Play Ltd | Professional & scientific | 2025 |
| Bespoke Glazing Design Limited | Construction | 2016 |
| Bespoke Property Investments Ltd | Other services | 2025 |
| Bespoke Solutions Property Services Ltd | Other services | 2025 |
| Beyond Capricorn Limited | Administrative & support | 2018 |
| Bidartisan Limited | Information & communication | 2026 |
| Big J Salvage Limited | Wholesale & retail | 2020 |
| Birds Nest (Honiton) Ltd | Hospitality | 2024 |
| Bishopshayne Consulting Limited | Professional & scientific | 2023 |
| Bisous Cafe Bar Ltd | Wholesale & retail | 2025 |
| Bithrey Holdings Limited | Real estate | 1984 |
| BK Excavation Ltd | Construction | 2015 |
| BK GB Services Ltd | Wholesale & retail | 2021 |
| Blackdown Aesthetics Ltd | Other services | 2024 |
| Blackdown Consultancy Limited | Professional & scientific | 2020 |
| Blackdown Game Limited | Agriculture & fishing | 2015 |
| Blackdown Hills Holiday Cottages Ltd | Hospitality | 2020 |
| Blackdown Property Limited | Real estate | 2022 |
| Blackdown Psychology Ltd | Health & social care | 2003 |
| Blackhill Engineering Services Limited | Manufacturing | 2013 |
| Blackmore Electrical SW Limited | Construction | 2024 |
| Blamphayne Sawmill Holdings Limited | Financial services | 2024 |
| Blamphayne Sawmill Limited | Wholesale & retail | 1995 |
| Blannicombe Game Ltd | Agriculture & fishing | 2020 |
| Blannicombe Valley Shoot Limited | Arts & recreation | 2013 |
| Bliss Yoga Studio Limited | Arts & recreation | 2025 |
| Bluebell Financial Management Limited | Financial services | 2022 |
| Blueray Property Investments Ltd | Real estate | 2023 |
| Boco Business Solutions Ltd | Information & communication | 2023 |
| Born Again Bottles CIC | Arts & recreation | 2024 |
| Boswell Sculpture & Castings Limited | Arts & recreation | 2014 |
| Botanivia Ltd | Professional & scientific | 2025 |
| BPM Property and Lettings Ltd | Real estate | 2025 |
| Brabrook & Co. Accountancy Services Limited | Professional & scientific | 1997 |
| Bradley Gent Limited | Wholesale & retail | 2012 |
| Brake Property Limited | Real estate | 2006 |
| BRH Fabrication Limited | Manufacturing | 2024 |
| Bright Farming Limited | Agriculture & fishing | 2009 |
| BSR Decorating Ltd | Construction | 2026 |
| Buchanan Psychology Ltd | Health & social care | 2025 |
| Building Project Solutions (SW) Limited | Construction | 2006 |
| Burn the Curtain C.I.C. | Arts & recreation | 2011 |
| Business Ninja Limited | Professional & scientific | 2023 |
| Byron Court (Exeter Road) Limited | Households | 1982 |
| C & a Taylor Limited | Health & social care | 2010 |
| C & C Properties (SW) Limited | Real estate | 2017 |
| C J Barrow Limited | Administrative & support | 2010 |
| C J Keitch Engineering Limited | Manufacturing | 2012 |
| C N Richards Limited | Administrative & support | 2003 |
| C Plant Services Devon Ltd | Administrative & support | 2005 |
| C.Govconsult Limited | Professional & scientific | 2025 |
| C2J Automotive Limited | Other services | 2023 |
| Cameron Fuller Limited | Manufacturing | 1998 |
| Caprese Consulting Limited | Extraterritorial | 2015 |
| Car Maintenance Centre Limited | Wholesale & retail | 2002 |
| Caraventi Ltd | Wholesale & retail | 2019 |
| Care With Kindness Limited | Health & social care | 2021 |
| Carps Property Ltd | Real estate | 2024 |
| Carsexec Ltd | Transport & logistics | 2014 |
| Carter Dawes IFA Solutions Ltd | Financial services | 2002 |
| Carvalhal Ltd | Health & social care | 2012 |
| Casafundaro Ltd | Real estate | 2020 |
| Cator Ryder Properties Limited | Financial services | 2000 |
| CD Forestry & Environmental Ltd | Agriculture & fishing | 2024 |
| Chambers Building & Decorating Holdings Ltd | Financial services | 2019 |
| Channelled Atlantic Ltd | Agriculture & fishing | 2023 |
| Chantry Hayes Management Company Limited | Professional & scientific | 2015 |
| Charles Stoyle Consultancy Ltd | Professional & scientific | 2026 |
| Cherished Care Devon Limited | Health & social care | 2018 |
| Cherry Retro Limited | Wholesale & retail | 2014 |
| Chilcotts Auctioneers Limited | Wholesale & retail | 2016 |
| Chill & Grill Kitchen Limited | Hospitality | 2024 |
| China Gourmet Honiton Ltd | Hospitality | 2025 |
| Chismo Welding & Pipe Fitting Services Ltd | Construction | 2015 |
| Cirrus Vape Shops Limited | Wholesale & retail | 2016 |
| Citadel Financial Solutions Limited | Financial services | 2009 |
| CJ LEE Landscapes Ltd | Administrative & support | 2025 |
| Clarke’S Bars Ltd | Hospitality | 2025 |
| Cleveland Drains Ltd | Construction | 2025 |
| Clonex Limited | Extraterritorial | 2012 |
| Cloudcruising Ltd | Administrative & support | 2021 |
| CLUB102 Ltd | Hospitality | 2025 |
| Coaching Focus Limited | Professional & scientific | 2009 |
| Coaction Solutions Ltd | Professional & scientific | 2010 |
| Coastal Marine Projects Ltd | Manufacturing | 2025 |
| Coastal Pure Ltd | Transport & logistics | 2022 |
| Coastal Workboats Ltd | Manufacturing | 2011 |
| Cobwob Community Interest Company | Wholesale & retail | 2025 |
| Coco-Marie Properties Ltd | Real estate | 2021 |
| Codcos Trans Ltd | Transport & logistics | 2020 |
| Coganhayes Limited | Households | 2026 |