| Azhar Optics Limited | Wholesale & retail | 2024 |
| Aziis Limited | Wholesale & retail | 2024 |
| Aziz Trading Ltd | Wholesale & retail | 2023 |
| Azlan Movers Ltd | Transport & logistics | 2025 |
| AZM International Ltd | Wholesale & retail | 2023 |
| Azmard Limited | Wholesale & retail | 2023 |
| AZR Locums Ltd | Health & social care | 2023 |
| Azshen Ltd | Wholesale & retail | 2023 |
| Azure Goods Ltd | Wholesale & retail | 2023 |
| Azure Trading Ltd | Wholesale & retail | 2023 |
| Azurenest Property Solution Limited | Transport & logistics | 2024 |
| B & B Dunford Limited | Construction | 2019 |
| B & B Precision Engineering (Huddersfield) Limited | Manufacturing | 1998 |
| B & H Capital Investors Ltd | Real estate | 2017 |
| B & R Freight Forwarding Ltd | Transport & logistics | 2025 |
| B a Associates Ltd | Administrative & support | 1996 |
| B a Thomas Properties Limited | Real estate | 2024 |
| B Berrys Ltd | Wholesale & retail | 2022 |
| B Clarke & SON Ltd | Administrative & support | 2022 |
| B Duffy Civil Engineering Ltd | Construction | 2019 |
| B Edwards Tree Services Ltd | Agriculture & fishing | 2026 |
| B Elliott Farming Ltd | Agriculture & fishing | 2013 |
| B Elliott Property (Holdings) Ltd | Financial services | 2024 |
| B Elliott Property Ltd | Real estate | 2013 |
| B K Blinds and Shutters York Ltd | Manufacturing | 2022 |
| B K R Construction Limited | Construction | 2026 |
| B M Packaging Limited | Manufacturing | 1990 |
| B M Service (Yorkshire) Ltd | Administrative & support | 2020 |
| B Rabbani Ltd | Health & social care | 2019 |
| B Spencer & SON Limited | Wholesale & retail | 2006 |
| B&H Motors Services Ltd | Manufacturing | 2023 |
| B&M Realty Ltd | Real estate | 2025 |
| B&R Restaurant Ltd | Hospitality | 2024 |
| B&S Auto Services Ltd | Wholesale & retail | 2026 |
| B&S Huddersfield Autos Ltd | Wholesale & retail | 2023 |
| B.A.C. & SON Solutions Ltd | Construction | 2003 |
| B.G. Joinery (Huddersfield) Limited | Construction | 2013 |
| B.L.A Commerce Ltd | Wholesale & retail | 2024 |
| B.R.T. Supplies Limited | Professional & scientific | 1982 |
| B1 Convenience Ltd | Wholesale & retail | 2024 |
| B2 Underfloor Heating Ltd | Construction | 2023 |
| B2BCONNECTOR Ltd | Professional & scientific | 2019 |
| B2SECOPS Ltd | Information & communication | 2024 |
| B83 Holdings Ltd | Other services | 2018 |
| B8H Limited | Construction | 2024 |
| B@C Auto Storage Ltd | Transport & logistics | 2018 |
| B@C Property Management Ltd | Real estate | 2025 |
| BA Healthcare Group Ltd | Financial services | 2023 |
| BA Landscaping Ltd | Administrative & support | 2021 |
| BA Locums Ltd | Health & social care | 2015 |
| BA Project Controls Ltd | Professional & scientific | 2025 |
| BA Project Services Ltd | Extraterritorial | 2015 |
| Baba Innovations Ltd | Manufacturing | 2026 |
| Baba's Pantry Ltd | Wholesale & retail | 2025 |
| Baby Sensory Halifax Limited | Other services | 2021 |
| Baby Sensory North Huddersfield Limited | Other services | 2015 |
| Babyway International Limited | Wholesale & retail | 1999 |
| Back-Up North Investments Limited | Financial services | 2022 |
| Back-Up North Limited | Real estate | 2019 |
| Backdrop Boutique Ltd | Wholesale & retail | 2025 |
| Backend Hussle Ltd | Real estate | 2026 |
| Bacon Properties Ltd | Real estate | 2025 |
| BAD Habits Events Ltd | Administrative & support | 2025 |
| Badea Health Limited | Health & social care | 2023 |
| Badshah Consultancy Ltd | Health & social care | 2018 |
| Baft (Huddersfield) CIC | Construction | 2023 |
| BAG IT Ltd | Other services | 2020 |
| Bagden Holdings Limited | Financial services | 2019 |
| Bags-O-Bricks Ltd | Wholesale & retail | 2015 |
| Baig's Group of Companies Private Ltd. | Hospitality | 2024 |
| Baildon Properties Ltd | Extraterritorial | 2006 |
| Bailey Bros. (Builders) Limited | Construction | 1973 |
| Bailey Ceilings & Partitions Ltd | Construction | 2015 |
| Bailey Ceilings Ltd | Construction | 2005 |
| Bailis Plumbing & Heating Ltd | Construction | 2024 |
| Baimbridge Flooring Limited | Manufacturing | 1986 |
| Bainbridge Sports Coaching Ltd | Arts & recreation | 2026 |
| Baines Property Investment Ltd | Real estate | 2023 |
| Bains Consultancy Services Ltd | Transport & logistics | 2017 |
| Bains Group Holdings Ltd | Financial services | 2024 |
| Bains Properties Ltd | Real estate | 2010 |
| Bains-Williams Specialist I.T. Consultancy Limited | Information & communication | 2007 |
| Bainsey's Barbers Ltd | Other services | 2026 |
| Baker Finch Interiors Limited | Wholesale & retail | 2009 |
| Bakker Holdings Limited | Real estate | 2022 |
| Balance Nutrition & Lifestyle Limited | Health & social care | 2022 |
| Balancegpyorkshire Limited | Health & social care | 2023 |
| Baldwin Coaching Ltd | Other services | 2010 |
| Baldwin Commercials Limited | Wholesale & retail | 2023 |
| Bale-Pak Consumables Limited | Wholesale & retail | 2016 |
| Balfor Limited | Administrative & support | 2007 |
| Balfour Estates Group Ltd | Real estate | 2025 |
| Bali Travel Services Limited | Transport & logistics | 2024 |
| Ballet Physio Limited | Health & social care | 2020 |
| Baloch Trading Ltd | Wholesale & retail | 2024 |
| BAM Solutions Ltd | Professional & scientific | 2018 |
| Bampax Properties Limited | Construction | 2025 |
| Bancha Limited | Hospitality | 2024 |
| Bancroft & Gray Limited | Real estate | 2020 |
| Bangin Burgers & Fastfood Ltd | Hospitality | 2025 |