| Barbarian Barbershop Ltd | Other services | 2021 |
| Barber & Sons Limited | Other services | 2018 |
| Barber&Retan Limited | Other services | 2025 |
| Barberian Barbers 1 Ltd | Other services | 2025 |
| Barberian Barbers Limited | Other services | 2026 |
| Barberian Cuts Ltd | Other services | 2025 |
| Bardhan Research and Education Trust of Rotherham | Professional & scientific | 1988 |
| Bardill Barnard Limited | Professional & scientific | 2003 |
| Bare Cosmetics Ltd | Other services | 2025 |
| Barestuff Ltd | Wholesale & retail | 2026 |
| Barfield Properties Limited | Real estate | 1958 |
| Bargain Technologies Ltd | Information & communication | 2022 |
| Bargain World Doncaster Ltd | Wholesale & retail | 2026 |
| Bark & Board Ltd | Other services | 2025 |
| Bark & Brush Spa Ltd | Other services | 2026 |
| Barker and Vickers Perfumery Limited | Manufacturing | 2026 |
| Barker Rail Ltd | Professional & scientific | 2025 |
| Barkley Hydraulics Limited | Manufacturing | 1992 |
| Barkley Property Holdings Limited | Real estate | 2022 |
| Barmond (Special Steels) Limited | Wholesale & retail | 2016 |
| Barmond International Limited | Wholesale & retail | 2017 |
| Barnburgh Farming Limited | Agriculture & fishing | 2014 |
| Barnburgh Hall Management Company Limited | Real estate | 2001 |
| Barnburgh Lakes Coffee House Ltd | Hospitality | 2026 |
| Barnes Independent Services Limited | Financial services | 2017 |
| Barnsdales FM Limited | Administrative & support | 2015 |
| Barnsdales Group Holdings Ltd | Real estate | 2023 |
| Barnsdales Limited | Real estate | 2005 |
| Barnsdales Living Limited | Real estate | 2016 |
| Barnsdales Valuations Limited | Real estate | 2009 |
| Barnsley Hair Salon Limited | Other services | 2023 |
| Barol Limited | Administrative & support | 2014 |
| Baron Lister Limited | Real estate | 2021 |
| Barras Thompson Limited | Real estate | 2005 |
| Barraton Design Studio Limited | Professional & scientific | 1981 |
| Barry Curran (Doncaster) Ltd | Information & communication | 2002 |
| Barry Fenton Independent Financial Advisers Ltd | Financial services | 1997 |
| Barry Napper & Co Limited | Manufacturing | 2015 |
| Barry Wade's Estates Limited | Real estate | 1962 |
| Barry Walker Industrial Supplies Limited | Wholesale & retail | 2013 |
| Bart Property Investments Ltd | Real estate | 2023 |
| Barti Transport Ltd | Transport & logistics | 2023 |
| Bartlett Lodges Limited | Professional & scientific | 2017 |
| Bartol Haulage Ltd | Transport & logistics | 2024 |
| Barton Blinds Limited | Wholesale & retail | 2000 |
| Barton Lane Holdings Ltd | Professional & scientific | 2026 |
| Base Commodities Ltd | Wholesale & retail | 2026 |
| Basketball World News Limited | Information & communication | 2007 |
| Bassleton Meadows Management Company Limited | Real estate | 2025 |
| Batchmix Limited | Manufacturing | 1990 |
| Batchpac Limited | Extraterritorial | 2005 |
| Bates Property Holdings Ltd | Real estate | 2024 |
| Bateson Energy Management Ltd | Construction | 2014 |
| Batey Content Consulting Limited | Professional & scientific | 2023 |
| Baukunst Limited | Arts & recreation | 2018 |
| Bawan Travel Ltd | Administrative & support | 2021 |
| Bawtry 2025 Ltd | Financial services | 2025 |
| Bawtry Accountants Ltd | Professional & scientific | 2011 |
| Bawtry Automek Limited | Wholesale & retail | 2023 |
| Bawtry Caravan Storage Ltd | Transport & logistics | 2021 |
| Bawtry Commercial Brokers Limited | Financial services | 2024 |
| Bawtry Commercial Limited | Administrative & support | 2020 |
| Bawtry Cosmetic & Implant Clinic Ltd | Health & social care | 2024 |
| Bawtry Dental, Cosmetic & Implant Clinic Ltd | Health & social care | 2012 |
| Bawtry Enterprises Limited | Professional & scientific | 1982 |
| Bawtry EYE Academy Limited | Wholesale & retail | 2013 |
| Bawtry Gardens (Portman Court) Limited | Extraterritorial | 1998 |
| Bawtry Granite and Marble Ltd | Construction | 2026 |
| Bawtry Group Limited | Financial services | 2024 |
| Bawtry Gym Limited | Arts & recreation | 2005 |
| Bawtry Hall Apartments Ltd | Real estate | 2022 |
| Bawtry Hall Events Ltd | Hospitality | 2018 |
| Bawtry Hall Farm Shop Limited | Hospitality | 2021 |
| Bawtry Hall Granary 2 Ltd | Financial services | 2024 |
| Bawtry Hall Granary 3 Limited | Financial services | 2025 |
| Bawtry Hall Granary Ltd | Information & communication | 2007 |
| Bawtry Hall Homes Ltd | Real estate | 2022 |
| Bawtry Hall Lifestyle Ltd | Real estate | 2022 |
| Bawtry Hall Living Ltd | Real estate | 2022 |
| Bawtry Hall Management Limited | Real estate | 2014 |
| Bawtry Hall Property 2 Limited | Real estate | 2018 |
| Bawtry Hall Property Limited | Real estate | 2013 |
| Bawtry Hall Suites Ltd | Hospitality | 2025 |
| Bawtry Hall Venue Ltd | Hospitality | 2017 |
| Bawtry Hall Venue Woodland Ltd | Agriculture & fishing | 2021 |
| Bawtry Hall Woodland Ltd | Agriculture & fishing | 2021 |
| Bawtry Health Ltd | Public administration | 2024 |
| Bawtry Holdings Ltd | Financial services | 2017 |
| Bawtry Implant Clinic Ltd | Health & social care | 2025 |
| Bawtry Investment & Finance Co. Limited (the) | Professional & scientific | 1967 |
| Bawtry Logistics Limited | Transport & logistics | 2019 |
| Bawtry Plastics Ltd | Construction | 2021 |
| Bawtry Property Developments Limited | Real estate | 2021 |
| Bawtry Property Management Ltd | Real estate | 2020 |
| Bawtry Road Access Agreement Company Limited | Extraterritorial | 2013 |
| Bawtry Road Leisure Ltd | Construction | 2023 |
| Bawtry Road Residential Ltd | Construction | 2023 |
| Bawtry Road Shop Limited | Wholesale & retail | 2026 |
| Bawtry Road Storage Ltd | Transport & logistics | 2025 |
| Bawtry Sawdust Company Limited | Manufacturing | 2003 |