| Aubretia View Management Company Limited | Households | 2019 |
| Aurora Beauty Ltd | Information & communication | 2018 |
| Autex Acoustics Limited | Construction | 2013 |
| Authentic Approved Leaders Ltd | Education | 2018 |
| Autospec Cars Ltd | Wholesale & retail | 2025 |
| Aviation Gardens Management Company Limited | Real estate | 2019 |
| Avigail Dairies Limited | Wholesale & retail | 2019 |
| AVM Assets Ltd | Real estate | 2020 |
| Awowb Limited | Information & communication | 2021 |
| B'Staaards Taverns Limited | Hospitality | 2025 |
| B.C.A. Group Ltd | Financial services | 1981 |
| Baildon Leisure Ltd | Construction | 2020 |
| Balmoral Garage (Halifax) Limited | Other services | 2009 |
| Banham's Environmental Energy Services Ltd | Construction | 2025 |
| Bay Bidco Limited | Financial services | 2024 |
| Bay Holdco Limited | Financial services | 2024 |
| Bay Midco Limited | Financial services | 2024 |
| Bay Topco Limited | Financial services | 2024 |
| BBB Courts Limited | Administrative & support | 2007 |
| Bbhair Limited | Wholesale & retail | 2023 |
| BCA Leisure Ltd | Manufacturing | 1996 |
| BCA Motion Limited | Extraterritorial | 2018 |
| BE Active Gyms Ltd | Construction | 2021 |
| Beautissimo Spa Ltd | Other services | 2018 |
| Bedford Sidings Management Company Limited | Households | 2019 |
| Beds by Morpheus Ltd | Manufacturing | 2022 |
| Beer GAS Express Limited | Administrative & support | 1998 |
| Behind Closed Doors (BCD) | Administrative & support | 2006 |
| Bell & Stocchero Limited | Wholesale & retail | 2016 |
| BEN Place Consulting Limited | Professional & scientific | 2016 |
| Bertie's Events Ltd | Hospitality | 2024 |
| Beta Fire Protection Limited | Administrative & support | 1999 |
| Beta Heating & Bathroom Supplies Ltd | Wholesale & retail | 2012 |
| Birks Royd Stone Sales Limited | Mining & quarrying | 2003 |
| BK Bespoke Joinery Limited | Manufacturing | 2022 |
| Black Boots Technology Limited | Information & communication | 2023 |
| Blackburn Conveyor Services Limited | Manufacturing | 2009 |
| Blackstar Lettings Limited | Real estate | 2019 |
| Blake Raymond Management Ltd | Construction | 2019 |
| Blossom Advisory Limited | Professional & scientific | 2020 |
| Blue Talent Solutions Ltd | Households | 2019 |
| Bollards Direct Limited | Professional & scientific | 2010 |
| Bollington News Ltd | Wholesale & retail | 2022 |
| Bongo Spares (UK) Limited | Wholesale & retail | 2012 |
| Botterill Developments Ltd | Construction | 2026 |
| BR Food & Wine Ltd | Wholesale & retail | 2025 |
| Bramar Consultancy Ltd | Professional & scientific | 2016 |
| Bramhams Homecare Ltd | Health & social care | 2013 |
| Branwell Court Management Company Limited | Households | 2006 |
| Breakerbox Ltd | Extraterritorial | 2025 |
| Bremen House Management Company Limited | Households | 2004 |
| Brenrent Limited | Real estate | 1998 |
| Bressingham Court Management Company (Halifax) Limited | Households | 1998 |
| Bridestone (Cheshire) Limited | Construction | 2008 |
| Bridge Heywood Caravan Park Limited | Hospitality | 2007 |
| Bridgefield Garage Limited | Wholesale & retail | 2022 |
| Brier HEY Mill Management Company Limited | Extraterritorial | 2002 |
| Brighton Stars Limited | Information & communication | 2011 |
| Broad Street Hotels Limited | Construction | 2018 |
| Broadway (Bradford) Management Company Limited | Households | 2002 |
| Brontel Limited | Information & communication | 2011 |
| Brookfield House Management (Huyton) Limited | Households | 2002 |
| Brookfield Trading Ltd | Financial services | 2024 |
| Brows Excellence Limited | Other services | 2016 |
| Bryant and Mitchell Limited | Real estate | 2022 |
| Bspb Coopers Limited | Hospitality | 2025 |
| Bspb Group Limited | Hospitality | 2025 |
| Bspb Q Tavern Limited | Hospitality | 2002 |
| Bubble Autocare Ltd | Wholesale & retail | 2025 |
| Building Envelope Fire Surveys Limited | Professional & scientific | 2020 |
| Building Management Controls Ltd | Construction | 2020 |
| Bulgogi BBQ Limited | Hospitality | 2012 |
| BWH Manufacturing Limited | Other services | 1978 |
| C & D Engineering Group Ltd | Financial services | 2025 |
| C & U Restaurant Limited | Hospitality | 2017 |
| C&Jm Consulting Ltd | Professional & scientific | 2016 |
| C49 Architecture Ltd | Professional & scientific | 2017 |
| Cable Gang Limited | Construction | 2014 |
| Caddy Field Court Management Company Limited | Households | 2006 |
| Cadman Associates Limited | Professional & scientific | 2017 |
| Caesars Italian York Limited | Hospitality | 2017 |
| Caffe Shop Limited | Wholesale & retail | 2009 |
| Calder Cabins Limited | Extraterritorial | 2003 |
| Calder Carrying Company Limited | Transport & logistics | 2013 |
| Calder Screenprint Limited | Manufacturing | 2011 |
| Calder Temperature Controls Limited | Manufacturing | 2004 |
| Calder Valley Fire & Security Ltd | Administrative & support | 2011 |
| Calder Valley View Management Limited | Households | 2009 |
| Calder Weaving Company Limited | Manufacturing | 1991 |
| Camper Nation Ltd | Manufacturing | 2026 |
| Cannon Colbeck LLP | | 2005 |
| Capability Brown Garden Centres Limited | Professional & scientific | 2010 |
| Capability Brown Landscaping Limited | Professional & scientific | 2010 |
| Capstone Power Solutions Ltd | Professional & scientific | 2020 |
| Carlton Mill Freehold Ltd | Real estate | 2020 |
| Carly Breame Ceramics Ltd | Manufacturing | 2021 |
| Cask Express Limited | Administrative & support | 2009 |
| Cass & BAM Limited | Financial services | 2024 |
| CB Business Recovery Ltd | Professional & scientific | 2020 |
| CC Group NW Ltd | Wholesale & retail | 2020 |