| Bridge Barber Ltd | Other services | 2026 |
| Bridge Booze Ltd | Wholesale & retail | 2018 |
| Bridgebox Ltd | Transport & logistics | 2026 |
| Bridgehomes Development Ltd | Construction | 2006 |
| Brighter Futures Clinical and Counselling Psychology Limited | Health & social care | 2025 |
| Bronco Developments Ltd | Construction | 2019 |
| Burgess House RTM Company Limited | Households | 2021 |
| Businessfit (UK) Limited | Professional & scientific | 2010 |
| Buzz Safety Consultants Ltd | Other services | 2016 |
| BY RU Coaching & Consulting Ltd | Professional & scientific | 2026 |
| C&S Transport 1989 Ltd | Transport & logistics | 2021 |
| C. C. K. Stainless Products Limited | Manufacturing | 1986 |
| Cafe Lauren Ltd | Hospitality | 2025 |
| Caja Endo Ltd | Health & social care | 2022 |
| Cake G Ltd | Manufacturing | 2023 |
| Calder Project Management Limited | Professional & scientific | 2017 |
| Calder Screen Limited | Manufacturing | 2025 |
| Calderdale Business Hub CIC | Administrative & support | 2020 |
| Calderdale Hypnotherapy Ltd | Health & social care | 2025 |
| Calderdale Yappy Days Limited | Other services | 2022 |
| Camlin Consulting & Coaching Limited | Administrative & support | 2011 |
| Car Web Shop Ltd | Wholesale & retail | 2018 |
| Carbolts Ltd | Manufacturing | 2018 |
| Carfitzone Ltd | Wholesale & retail | 2024 |
| Caroline Northrop Limited | Other services | 2015 |
| Carradale Properties Limited | Real estate | 2026 |
| Casale Chauffeurs Ltd | Transport & logistics | 2026 |
| Casey Properties Limited | Households | 2003 |
| Castle Estates Yorkshire Ltd | Financial services | 1992 |
| Catalyst Medtech Consulting Ltd | Professional & scientific | 2025 |
| CBA Marketing Research Limited | Professional & scientific | 2001 |
| CE Consultants Ltd. | Professional & scientific | 2009 |
| Chapters Group Ltd | Real estate | 2023 |
| Charles & Co Assets Ltd | Financial services | 2026 |
| Chestnut Court (Ripponden) Management Limited | Households | 2005 |
| Chickpea Productions Ltd | Information & communication | 2021 |
| Chimes of Freedom Ltd | Wholesale & retail | 2021 |
| Chr!S Consulting Ltd | Real estate | 2023 |
| Cinnamon Halifax Ltd | Hospitality | 2025 |
| Cinnamon Lodge Restaurants Ltd | Hospitality | 2004 |
| Cinnamon Rishworth Ltd | Hospitality | 2024 |
| Clarity Accountancy Ltd | Professional & scientific | 2015 |
| Clarity Property Portfolio Ltd | Real estate | 2020 |
| CLM Properties & Management Ltd | Real estate | 2022 |
| Code L6 Architecture Limited | Professional & scientific | 2015 |
| Color White Trading Ltd | Wholesale & retail | 2025 |
| Commcare UK Limited | Information & communication | 2004 |
| Community Diagnostic Projects Ltd | Health & social care | 2024 |
| Contractor Stays UK Ltd | Real estate | 2023 |
| Cookiedog Limited | Real estate | 2021 |
| Cookiengdg Limited | Wholesale & retail | 2025 |
| Cooper's Kitchen & Bar Limited | Hospitality | 2020 |
| Cornerstones Osteopathy Ltd | Health & social care | 2016 |
| CQ Medics Limited | Health & social care | 2022 |
| Crawshaw Electrical Solutions Ltd | Construction | 2021 |
| Cross Check Tech Ltd | Information & communication | 2024 |
| Crosswell Futures Limited | Real estate | 2013 |
| Crow Hill END Power Ltd | Energy | 2013 |
| Crow Hill Rentals Ltd | Real estate | 2016 |
| Crown Consultants Ltd | Administrative & support | 2008 |
| Crypto Construction Limited | Construction | 2023 |
| Crystal Surface Ltd | Administrative & support | 2018 |
| CS Value Ltd | Wholesale & retail | 2017 |
| Cush & Co. Ltd | Wholesale & retail | 2022 |
| CVF & Co Ltd | Wholesale & retail | 2024 |
| CYY Trading Ltd | Wholesale & retail | 2025 |
| D & K W Holdings Ltd | Agriculture & fishing | 2025 |
| D B C Utilities Limited | Construction | 2022 |
| D C N Services Limited | Information & communication | 1999 |
| D Sales (U.K.) Limited | Wholesale & retail | 2005 |
| D Services (U.K.) Limited | Professional & scientific | 2008 |
| Dababsa Limited | Health & social care | 2025 |
| DAG Leisure Limited | Hospitality | 2017 |
| Daisy Doops Doggy Daycare Ltd | Other services | 2023 |
| Daisy LEA Poultry Farm Limited | Manufacturing | 1961 |
| Dale Stephenson Limited | Construction | 1995 |
| Dalton and Davis Holdings Ltd | Financial services | 2025 |
| Danson Land Ltd | Construction | 2026 |
| Danya Construction Ltd | Construction | 2025 |
| Dario's Pizzeria Ltd | Wholesale & retail | 2004 |
| Dark Knight Motor Company Ltd | Wholesale & retail | 2025 |
| Darts Republic (GB) Ltd | Wholesale & retail | 2025 |
| Data Simplified Ltd | Professional & scientific | 2020 |
| Datablox Internet Limited | Information & communication | 2006 |
| Dataflex IT Ltd | Information & communication | 2024 |
| Dawson Estates (Elland) Ltd | Real estate | 2014 |
| Dean Byram Ltd | Construction | 2017 |
| Debbieskylarktours Ltd | Administrative & support | 2023 |
| Deerplay Estates Ltd | Real estate | 2022 |
| Deerstones Management Limited | Households | 2005 |
| DEL Taverns and Estates Ltd | Hospitality | 2019 |
| Deli Belge Ltd | Wholesale & retail | 2015 |
| Delta Clubs Ltd. | Hospitality | 1994 |
| Denali Hospitality Limited | Hospitality | 2017 |
| Derora Ltd | Professional & scientific | 2019 |
| Destiny by Design Ltd | Administrative & support | 2021 |
| DFF Properties Ltd | Real estate | 2025 |
| Dhaka International Limited | Wholesale & retail | 2023 |
| Diana Socials Limited | Information & communication | 2025 |
| Discourse Agency Limited | Professional & scientific | 2015 |