| Avoin MAA Surveys Limited | Professional & scientific | 2009 |
| Avra Impex (PVT) Ltd | Wholesale & retail | 2023 |
| Avtom Ltd | Information & communication | 2026 |
| AW Classic Cars Ltd | Wholesale & retail | 2026 |
| AW Estate Agents Ltd | Real estate | 2008 |
| AW Utilities Limited | Construction | 2025 |
| AWW Consulting Ltd | Professional & scientific | 2025 |
| Axis Doors Limited | Wholesale & retail | 2009 |
| AXIS53 Ltd | Wholesale & retail | 2026 |
| Axonery Business Solutions Limited | Professional & scientific | 2023 |
| AY Building and Landscaping Ltd | Construction | 2024 |
| Aya's Wine and Dine Limited | Hospitality | 2024 |
| Aysgarth Falls Limited | Hospitality | 2023 |
| AZ Holistic Beauty Limited | Wholesale & retail | 2025 |
| Azall Associates Ltd | Financial services | 2025 |
| Azar Fire Limited | Construction | 2022 |
| B & a Door Solutions Ltd | Construction | 2019 |
| B & a Investments Ltd | Real estate | 1998 |
| B & a Works Limited | Manufacturing | 2021 |
| B & D Electrical Contractors Ltd | Construction | 2013 |
| B Animated Limited | Professional & scientific | 2018 |
| B D I Computer Services Limited | Other services | 2009 |
| B D S I Limited | Wholesale & retail | 2003 |
| B Davies Roofing Limited | Construction | 2025 |
| B Labs Limited | Administrative & support | 2007 |
| B Medic Services Limited | Health & social care | 2023 |
| B Nails and Beauty Ltd | Other services | 2024 |
| B R Guest Limited | Hospitality | 2005 |
| B R Guest Travel Limited | Administrative & support | 2024 |
| B S Tank Solutions Ltd | Manufacturing | 2013 |
| B Williams Finance Limited | Professional & scientific | 2014 |
| B&C Renewables Ltd | Construction | 2025 |
| B&F Property Developments Limited | Construction | 2026 |
| B&K Real Estate Ltd | Real estate | 2021 |
| B&W Legal Limited | Professional & scientific | 2026 |
| B-Line Property Services Ltd | Construction | 2019 |
| B. Jaye Roberts Ltd | Wholesale & retail | 2019 |
| B.D.B. Dismantling Limited | Administrative & support | 2000 |
| B.Raine Plastering Ltd | Construction | 2024 |
| B2B Distributions Ltd | Transport & logistics | 2026 |
| B73 Creative Ltd | Professional & scientific | 2022 |
| Babu Spices Ltd | Hospitality | 2024 |
| BAC Trade Limited | Wholesale & retail | 2024 |
| Back to Black Studios Limited | Information & communication | 2012 |
| Bains Brothers Limited | Wholesale & retail | 2025 |
| Bairstow Properties Barnsley Ltd | Real estate | 2025 |
| Bajwa Commerce Ltd | Wholesale & retail | 2026 |
| Bakehouse Solutions Limited | Administrative & support | 2014 |
| Baker & Baker Limited | Professional & scientific | 2013 |
| Bakery Solutions Ltd. | Administrative & support | 2002 |
| Balti House Barnsley Ltd | Hospitality | 2024 |
| Balti House Darton Ltd | Hospitality | 2023 |
| Balti Palace Food Court Restaurant Limited | Hospitality | 2021 |
| Balti Zaika Takeaway Ltd | Hospitality | 2022 |
| Bamford Glass Holdings Limited | Financial services | 2023 |
| Bamford Timber Frame Specialists Limited | Construction | 2017 |
| Bamo Barber Shop Ltd | Other services | 2025 |
| Banana Grove Ltd | Hospitality | 2023 |
| Bang Tidy Clothing Limited | Manufacturing | 2011 |
| Bangers and Cash Limited | Wholesale & retail | 2020 |
| Bangopure Limited | Wholesale & retail | 2019 |
| Banjo Property Ltd | Real estate | 2003 |
| Banner Business Dynamics Limited | Professional & scientific | 2009 |
| Bapp Group Limited | Manufacturing | 1992 |
| Bapp Industrial Supplies (UK) Limited | Wholesale & retail | 2005 |
| Bapp Industrial Supplies Limited | Manufacturing | 1972 |
| Bapp Management Company Limited | Professional & scientific | 2005 |
| Bapp Properties Limited | Real estate | 2018 |
| Bar 1 Freight Ltd | Wholesale & retail | 2023 |
| Bar Angels Promotions Ltd | Other services | 2013 |
| Bar DE Beaute Limited | Other services | 2023 |
| Bar Ruelle Ltd | Hospitality | 2024 |
| Baran Kebab Shop Ltd | Hospitality | 2026 |
| Barbara Limited | Professional & scientific | 2006 |
| Barber Mclelland Ltd | Professional & scientific | 2015 |
| Barber of Sheffield Limited | Wholesale & retail | 1998 |
| Barber's Wealth Management Limited | Professional & scientific | 2009 |
| Barberlanduk Ltd | Other services | 2024 |
| Barberworxs Limited | Other services | 2026 |
| Barcas Yorkshire Limited | Administrative & support | 2024 |
| Barewitness Ltd | Professional & scientific | 2024 |
| Barker Holiday Lettings Limited | Hospitality | 2024 |
| Barkers the Butchers Limited | Wholesale & retail | 2011 |
| Barleylodge Consulting Limited | Professional & scientific | 2010 |
| Barlow Care Group Ltd | Health & social care | 2022 |
| Barlow Offshore Networks Ltd | Construction | 2026 |
| Barlow Properties (Yorkshire) Limited | Real estate | 2015 |
| Barn-Z Fisheries Ltd | Hospitality | 2026 |
| Barna Property Holdings Limited | Real estate | 2024 |
| Barnford Holdings Ltd | Real estate | 2025 |
| Barnsdale (UK) Limited | Professional & scientific | 2011 |
| Barnsley & District Citizens Advice Bureau | Information & communication | 2003 |
| Barnsley & District Dyslexia Association Limited | Education | 1995 |
| Barnsley 1970 Limited | Extraterritorial | 2013 |
| Barnsley Accounting Services Limited | Professional & scientific | 2026 |
| Barnsley Auto Centre Limited | Extraterritorial | 2025 |
| Barnsley Barbell Limited | Arts & recreation | 2016 |
| Barnsley Barbers Ltd | Other services | 2025 |
| Barnsley Biodiversity Trust | Professional & scientific | 2003 |
| Barnsley Blue Limited | Wholesale & retail | 2017 |