| B a Chant Plumbing & Heating Ltd | Construction | 2009 |
| Badge Station Limited | Wholesale & retail | 2025 |
| Barbet Catering Limited | Hospitality | 2024 |
| Barks Expensive Ltd | Wholesale & retail | 2024 |
| Barkstar Co Ltd | Manufacturing | 2017 |
| Barnes Meadow Management Limited | Households | 2001 |
| Bartlett Electrical Services (Devon) Ltd | Construction | 2012 |
| Bateman Rural Associates Ltd | Professional & scientific | 2011 |
| BCS Plumbing & Heating (Yeovil) Limited | Other services | 2011 |
| BDC South West Limited | Manufacturing | 2013 |
| Beacon Farms Ltd | Wholesale & retail | 2024 |
| Beacon Games Ltd | Wholesale & retail | 2023 |
| Beacon Healthcare Projects Limited | Other services | 2020 |
| Beautifully Baked by Charlene Ltd | Hospitality | 2023 |
| Bellair Charmouth Ltd | Real estate | 2022 |
| BEN Gooding Gardens Ltd | Administrative & support | 2026 |
| Benellie Premium Accommodation Ltd | Hospitality | 2019 |
| Berwyn Events Limited | Hospitality | 2013 |
| BGA Accountants Limited | Professional & scientific | 2025 |
| Biscuit Dunkerz Ltd | Wholesale & retail | 2024 |
| Bishops Court Editions Ltd | Manufacturing | 2019 |
| Bizmonkeys Ltd | Professional & scientific | 2010 |
| Black Diamond Commodities Limited | Professional & scientific | 2009 |
| Black Panther Holdings Ltd | Financial services | 2024 |
| Blackbury Kitchens Ltd | Construction | 2015 |
| Blackdown Farm Vets Limited | Professional & scientific | 2021 |
| Blakesley Estates (Kingskerswell) Ltd | Construction | 2021 |
| Blakesley Estates (Lyme Regis) Limited | Construction | 2020 |
| Blakesley Estates (Newquay SU) Ltd | Construction | 2021 |
| Blakesley Estates (Stratton) Ltd | Construction | 2022 |
| Blakesley Estates Construction Ltd. | Construction | 2019 |
| Blakesley Estates LLP | | 2007 |
| Blue Lias (Lyme Regis) Ltd | Wholesale & retail | 2021 |
| Blue Lias Gallery Limited | Wholesale & retail | 2009 |
| Blue Sky Cleaning and Property Services Ltd | Administrative & support | 2021 |
| Blue Turtle Dive Charters Limited | Arts & recreation | 2003 |
| Bluebird Graphics Limited | Manufacturing | 2000 |
| Blueyellow Auto Care Ltd | Wholesale & retail | 2025 |
| Bond Technical Services Limited | Professional & scientific | 2010 |
| Boston Pet Ltd | Wholesale & retail | 2020 |
| Bottleman Recycling Services Limited | Water & waste | 2007 |
| Bpoc Yoga Club C.I.C. | Other services | 2024 |
| BRB Carpentry Ltd | Construction | 2021 |
| Bridport Barracudas Swimming Club Limited | Arts & recreation | 2009 |
| Brighton and Hove Magazines Limited | Information & communication | 2020 |
| Brinjal Ltd | Professional & scientific | 2009 |
| Britannica Holdings Limited | Real estate | 2019 |
| Broadleaf Tree Surgery & Landscaping Ltd | Administrative & support | 2019 |
| Browhill Limited | Manufacturing | 2021 |
| Brownbridge Services Limited | Administrative & support | 2016 |
| BST Building and Maintenance Ltd | Construction | 2026 |
| Buckland House Properties Ltd | Real estate | 2020 |
| Buena Vista Management Company Limited | Households | 2007 |
| Buffers Model Railways Limited | Wholesale & retail | 2002 |
| Builders T Company Ltd | Manufacturing | 2024 |
| C a Studios Ltd | Information & communication | 2010 |
| C S Garden Services SW Limited | Administrative & support | 2019 |
| C.H. & P.C. Corbett Limited | Agriculture & fishing | 1992 |
| C.P. Long Transport Limited | Transport & logistics | 2006 |
| C6 Funding Ltd | Professional & scientific | 2016 |
| Cadi - Causal Artificial Decision Intelligence Ltd | Information & communication | 2026 |
| Cagenut Ltd | Water & waste | 2024 |
| Callands Retail Ltd | Wholesale & retail | 2015 |
| Canatoon Ltd | Financial services | 2023 |
| Capabo Ltd | Information & communication | 2026 |
| Carnbrae Developments Ltd. | Real estate | 2009 |
| Caroline Walsh Ltd | Health & social care | 2022 |
| Carrarino Limited | Construction | 2014 |
| Castle Hill Tyres Limited | Other services | 2016 |
| Castle House (Axminster) Management Company Limited | Households | 1996 |
| Castlewood Vineyards Ltd | Manufacturing | 2016 |
| Castor SW Ltd | Professional & scientific | 2013 |
| Catria Concierge Ltd | Households | 2026 |
| Causley Cabs Ltd | Transport & logistics | 2018 |
| Caythorpe Associates Limited | Information & communication | 2016 |
| CB GAS South West Limited | Construction | 2002 |
| CC Colyford Ltd | Wholesale & retail | 2018 |
| Cedar Mews (Axminster) Management Company Limited | Households | 2021 |
| Cellar Rules Limited | Agriculture & fishing | 2013 |
| Centrapart (UK) Ltd | Wholesale & retail | 2005 |
| CGR Sussex Limited | Professional & scientific | 2004 |
| Charchie Ltd | Real estate | 2020 |
| Chard & Burridge Farms Limited | Agriculture & fishing | 1999 |
| Chard & District Riding for the Disabled Limited | Health & social care | 2005 |
| Chard Communitea Waffle C.I.C. | Hospitality | 2024 |
| Chardstock Manor Estates Limited | Real estate | 1970 |
| Chardstone Grove Management Company Limited | Households | 2016 |
| Charmouth Fish Bar (Harveys) Limited | Hospitality | 2007 |
| Charmouth Fossils Limited | Wholesale & retail | 2002 |
| Cheverals Place (Flats) Ltd | Real estate | 2020 |
| Cheverals Place Ltd | Real estate | 2017 |
| Cheverels Place Maiden Newton Management Limited | Real estate | 2018 |
| Childrens House Childcare Ltd | Health & social care | 2014 |
| Chip Southwest Ltd | Real estate | 2025 |
| Chiropody Appliance Service Limited | Manufacturing | 2004 |
| Chris Briant Independent Driving Tuition Limited | Education | 2018 |
| Cinnamon Axminster Ltd | Hospitality | 2025 |
| Clear Ritual Ltd | Wholesale & retail | 2026 |
| Climax Windows Limited | Construction | 1999 |
| Cloakham Road and Water Limited | Real estate | 2003 |