| Baked Earth Bakery Limited | Manufacturing | 2001 |
| Baked Plate Ltd | Hospitality | 2016 |
| BAKED04 Ltd | Hospitality | 2023 |
| Baker Contracts Ltd | Construction | 2025 |
| Baker Property (Nottingham) Limited | Real estate | 2017 |
| Baker Property and Lettings Ltd | Real estate | 2022 |
| Bakerbaird Communications Ltd | Professional & scientific | 2020 |
| Bakerloo Properties Limited | Households | 2023 |
| Bakers Buildings Ltd | Real estate | 2023 |
| Bakersfield Homes Ltd | Real estate | 2017 |
| Bakewell Brothers Ltd | Manufacturing | 2025 |
| Bakkafrost UK Limited | Extraterritorial | 1995 |
| Bakkah Holdings Ltd | Financial services | 2024 |
| Bakwright Homes Ltd | Real estate | 2024 |
| BAL Properties Limited | Real estate | 2001 |
| BAL Property Management Ltd | Extraterritorial | 2016 |
| Balagrae Ltd | Wholesale & retail | 2017 |
| Balance Education Limited | Administrative & support | 2023 |
| Balance Health Nottingham Ltd | Health & social care | 2025 |
| Balance: Platform Services Limited | Professional & scientific | 2021 |
| Balance: Trustees Limited | Extraterritorial | 2016 |
| Balance: Wealth Planning Limited | Financial services | 2013 |
| Balanced Bodycare Ltd | Manufacturing | 2022 |
| Balanced Prosperity Ltd | Other services | 2025 |
| Balco Short Stays Ltd | Real estate | 2023 |
| Baldiya Ltd | Administrative & support | 2026 |
| Baldo & Bros Ltd | Real estate | 2025 |
| Baldwin COX Limited | Professional & scientific | 2006 |
| Baldwin Property Group Ltd | Extraterritorial | 2020 |
| Balen IVF Limited | Health & social care | 2009 |
| Bales Interiors Limited | Construction | 2022 |
| Balina Limited | Manufacturing | 2023 |
| Balkuling Limited | Arts & recreation | 2023 |
| Ball & Lees Limited | Agriculture & fishing | 2024 |
| Balla Bros Ltd | Construction | 2025 |
| Ballard (Winchester) Limited | | 1960 |
| Ballers and Hackers Limited | Arts & recreation | 2017 |
| Balloon Circus Ltd | Arts & recreation | 2014 |
| Ballyros Law Limited | Professional & scientific | 2022 |
| Ballys Art Ltd | Wholesale & retail | 2024 |
| Balm Therapies CIC | Other services | 2019 |
| Balmoral Conservatory Insulation Limited | Construction | 2020 |
| Balmoral Court (Flanderwell Lane) Management Limited | Households | 2015 |
| Balmoral Physiotherapy Limited | Health & social care | 2013 |
| Balony Property Limited | Real estate | 2026 |
| Balozzo Ltd | Wholesale & retail | 2024 |
| Balsini Corporation Limited | Construction | 2015 |
| Baltic Shop KH Ltd | Wholesale & retail | 2025 |
| Balticity Group Limited | Real estate | 2025 |
| Balticraveco Ltd | Hospitality | 2024 |
| BAM Global Ltd | Professional & scientific | 2022 |
| Bambam Groundworks Ltd | Wholesale & retail | 2023 |
| Bamberger Group Limited | Agriculture & fishing | 2022 |
| Bamberley Developments Limited | Professional & scientific | 1982 |
| Bambino Childcare Ltd | Education | 2013 |
| Bambo Builders Ltd | Construction | 2020 |
| Bamboo Thai Massage and Wellbeing Ltd | Health & social care | 2023 |
| Bambus Marketing Ltd | Professional & scientific | 2025 |
| Bamman Limited | Administrative & support | 2015 |
| Bampton Packaging Limited | Manufacturing | 1926 |
| Bana Ltd | Health & social care | 2020 |
| Bananicorn Limited | Hospitality | 2017 |
| Banaz Ltd | Wholesale & retail | 2025 |
| Banbury V.E. Limited | Other services | 1999 |
| Bancho Limited | Wholesale & retail | 2015 |
| Bancroft Consulting Limited | Professional & scientific | 2005 |
| Bandanjo Limited | Administrative & support | 2013 |
| Bang the Elephant Brewing Co Ltd | Manufacturing | 2017 |
| Banged UP Ltd | Education | 2025 |
| Bangla Point Ltd | Hospitality | 2024 |
| Bangla Store Nottingham Limited | Wholesale & retail | 2025 |
| Bangladesh Properties Ltd | Real estate | 2019 |
| Baniantree Ltd | Real estate | 2020 |
| Bank Care Limited | Administrative & support | 2024 |
| Banks Building & Joinery Limited | Construction | 2008 |
| Banks Property Solutions Ltd | Real estate | 2025 |
| Banner Solutions Ltd | Transport & logistics | 1992 |
| Bannerman Contracting Ltd | Professional & scientific | 2024 |
| Banquet 1415 Ltd | Hospitality | 2023 |
| Bantu Notts CIC | Manufacturing | 2025 |
| Baobab Pictures Ltd | Information & communication | 2020 |
| Baobao Holdings Ltd | Real estate | 2015 |
| Baofat Ltd | Professional & scientific | 2024 |
| Bar Gigi Limited | Hospitality | 2019 |
| Bar Humbug Ltd. | Real estate | 1996 |
| Bar Iberico Limited | Hospitality | 2017 |
| Barada Property Ltd | Real estate | 2025 |
| Barak & Co Holdings Ltd | Real estate | 2026 |
| Barak Group Limited | Construction | 2020 |
| Barak Law Limited | Real estate | 2016 |
| Barak Property Ltd | Real estate | 2025 |
| Baraka (FAM) Ltd | Real estate | 2023 |
| Barakah Estate Solutions Ltd | Professional & scientific | 2025 |
| Barakah Estates Ltd | Real estate | 2014 |
| Barakah Partners Co Ltd | Financial services | 2015 |
| Barakeh Group Limited | Professional & scientific | 2023 |
| Barakeh Nottingham Ltd | Real estate | 2024 |
| Baramis Limited | Real estate | 2016 |
| Baran Developments Limited | Real estate | 2025 |
| Barari Group Limited | Construction | 2025 |