| Brandvision Limited | Professional & scientific | 2024 |
| Brattleby Holiday Lets Limited | Hospitality | 2024 |
| Braybank Ltd | Construction | 2008 |
| Break the Machine Limited | Wholesale & retail | 2017 |
| Breathe With ME Limited | Professional & scientific | 2013 |
| Breezer Ltd | Information & communication | 2023 |
| Brewfitt Limited | Hospitality | 1981 |
| Brian Smyth Company Ltd | Manufacturing | 2015 |
| Bridge Fabrications Limited | Manufacturing | 1996 |
| Bridge Taxis (Meltham) Limited | Transport & logistics | 2024 |
| Bridgemana Ltd | Information & communication | 2021 |
| Bridgestart Holdings Limited | Financial services | 2024 |
| Bridgestone Lettings Ltd | Real estate | 2023 |
| Bright Street (Sowerby Bridge) Ltd | Construction | 2024 |
| British Institute of Funeral Directors | Other services | 2007 |
| Briton Engineering Developments Limited | Manufacturing | 1979 |
| Broad Orchard 5 Limited | Real estate | 2010 |
| Broadbent Surveyors Limited | Professional & scientific | 2014 |
| Brockholes Business Group C.I.C. | Administrative & support | 2023 |
| Brook Carpets Limited | Wholesale & retail | 1959 |
| Brook Group (Holdings) Limited | Administrative & support | 2000 |
| Brook Group Limited | Real estate | 1929 |
| Broomfield Carbide Gauges Limited | Manufacturing | 1978 |
| BRS Landscapes Ltd | Administrative & support | 2008 |
| Bruce (Yorkshire) Limited | Health & social care | 2022 |
| Bryndlee Court (Holmfirth) Limited | Real estate | 2004 |
| BSB (Holmfirth) Limited | Construction | 2015 |
| BSL Scaffolding UK Limited | Wholesale & retail | 2004 |
| Buckmell Properties Limited | Real estate | 2006 |
| Buddies Florist Ltd | Wholesale & retail | 2016 |
| Budget Ceilings Ltd | Construction | 2010 |
| Build Equity Limited | Real estate | 2022 |
| Buildgear Limited | Wholesale & retail | 2025 |
| Bulk Solids & Powder Handling UK Limited | Other services | 2023 |
| Burger Burger Honley Ltd | Hospitality | 2022 |
| Burnlee Court (Holmfirth) Limited | Households | 2004 |
| Business Digital Communications Ltd | Information & communication | 2019 |
| Business Innovation & Growth International Limited | Professional & scientific | 2024 |
| Busy BEE Cleaner Limited | Administrative & support | 2026 |
| Buttons, Threads and Scissors Ltd | Wholesale & retail | 2024 |
| C & H Camper Conversions Limited | Wholesale & retail | 2016 |
| C & H Pop-Tops Limited | Wholesale & retail | 2018 |
| C H Property Holdings Limited | Real estate | 2016 |
| C L Boardman Ltd | Professional & scientific | 2006 |
| C Rooney Properties Ltd | Real estate | 2020 |
| C S Business Consultancy Limited | Professional & scientific | 2022 |
| C T Photo-Med Limited | Professional & scientific | 1999 |
| C.S.K. Welding Ltd | Manufacturing | 2025 |
| Cable Testing Services Ltd | Professional & scientific | 2023 |
| Cafe Cloud (Newquay) Ltd | Hospitality | 2023 |
| Cafedirect Roastery Limited | Wholesale & retail | 2000 |
| Calderwick Limited | Wholesale & retail | 2026 |
| Cale Engineering Ltd | Professional & scientific | 2010 |
| Calivia Holdings Ltd | Real estate | 2025 |
| Cambridge Suites Limited | Real estate | 2026 |
| CAN Tech Engineering Limited | Professional & scientific | 2006 |
| Candam Limited | Professional & scientific | 2016 |
| Candy Barn Limited | Wholesale & retail | 2020 |
| Cantyball Industries Limited | Information & communication | 2015 |
| Carbon Plan Engineering Limited | Professional & scientific | 2015 |
| Cardiarhythm Ltd | Health & social care | 2021 |
| Carisurg CIC | Professional & scientific | 2025 |
| Carl Hodgson Ltd | Professional & scientific | 2012 |
| Carlab Motor Co. Ltd | Wholesale & retail | 2025 |
| Carlin Farms Limited | Agriculture & fishing | 2000 |
| Carlin Nurseries Limited | Health & social care | 2011 |
| Carrino Eco Ltd | Energy | 2009 |
| Cars on Demand Limited | Administrative & support | 2003 |
| Carsynergy Group Limited | Wholesale & retail | 2021 |
| Cartworth Consultancy Ltd | Professional & scientific | 2024 |
| Cascaide U.K. Limited | Professional & scientific | 2003 |
| Castle Grange Care Limited | Health & social care | 2025 |
| Castleviewuk Forensics Limited | Extraterritorial | 2008 |
| Catalyst Enterprises UK Limited | Real estate | 2000 |
| Catalysta Management Ltd | Professional & scientific | 2018 |
| Cavanagh Live Ltd | Professional & scientific | 2022 |
| CB Project Solutions Ltd | Professional & scientific | 2025 |
| CCT Properties Limited | Construction | 2003 |
| CDM Fire Protection Limited | Construction | 2013 |
| Celebration Packages Limited | Professional & scientific | 2017 |
| Celebration Villas Limited | Professional & scientific | 2017 |
| Centrepath Consulting Ltd | Administrative & support | 2015 |
| Century Power Limited | Energy | 2024 |
| Chalis Consulting Limited | Professional & scientific | 2024 |
| Chamberterm Limited | Professional & scientific | 1995 |
| Chameleon Wheelz & Powder Coating Ltd | Manufacturing | 2022 |
| Champion Brass Limited | Arts & recreation | 2000 |
| Champion Call Ducks Ltd | Agriculture & fishing | 2024 |
| Champions of Castleton Limited | Real estate | 2019 |
| Change Over ( UK) Limited | Administrative & support | 2012 |
| Changes Beauty Limited | Other services | 2011 |
| Chapel Court (Meltham) Management Company Limited | Hospitality | 2009 |
| Chapter IV Consulting Ltd | Professional & scientific | 2019 |
| Charlton Regulatory Consulting Limited | Information & communication | 2022 |
| Charmil Properties Ltd | Real estate | 2023 |
| Chc-Marketing for Business and Education Limited | Administrative & support | 2025 |
| Cheeky Monkey 09 Ltd | Professional & scientific | 2014 |
| Cheviot Holding (Meltham) Limited | Agriculture & fishing | 2024 |
| Chicken & Delights Ltd | Hospitality | 2025 |
| Childrenswear Buyer Limited | Information & communication | 1999 |