| Bawtry Tyre & Exhaust Centre Ltd | Wholesale & retail | 2023 |
| Bawtry Venue Ltd | Financial services | 2024 |
| Bawtry Woodland Group Ltd | Financial services | 2024 |
| Bawtry Woodland Ltd | Real estate | 2023 |
| Bawtry's Vintage Ltd | Transport & logistics | 2025 |
| Bawtrys Rooms Ltd | Real estate | 2020 |
| Baxter DON Limited | Other services | 2025 |
| Baxter's Sustainable Resource Management Limited | Professional & scientific | 2023 |
| Bayes-Shelton Consulting Limited | Information & communication | 2018 |
| Bayleaf & Beyond Limited | Hospitality | 2021 |
| Bayleaf 2020 Limited | Hospitality | 2019 |
| BB Property Maintenance and Management Ltd | Construction | 2026 |
| BB Roofing and Cladding Ltd | Construction | 2017 |
| BBF Industrial Ltd | Professional & scientific | 2025 |
| BBG Consultants Ltd | Mining & quarrying | 2019 |
| BBK9 Training Solutions Ltd | Other services | 2017 |
| BBL Consultancy Ltd | Construction | 2024 |
| Bbm-Tech Ltd | Information & communication | 2025 |
| BBQ House Donny Limited | Hospitality | 2019 |
| BBQ Nazar Limited | Hospitality | 2023 |
| BBQ Pods (UK) Limited | Extraterritorial | 2026 |
| BBR Construction Services Limited | Professional & scientific | 2025 |
| Bbrg Finance (UK) Ltd. | Professional & scientific | 2014 |
| BBS (Doncaster) Limited | Construction | 2009 |
| BBT Ecoplas Ltd | Wholesale & retail | 2020 |
| BC Assets Managment Ltd | Information & communication | 2026 |
| BC Automotive Limited | Wholesale & retail | 2022 |
| BC Campers and Commercial Ltd | Wholesale & retail | 2025 |
| BC Investigations Limited | Administrative & support | 2024 |
| BC NDT Services Limited | Professional & scientific | 2014 |
| BCA Accountancy Services Ltd | Professional & scientific | 2024 |
| BCA Investors Ltd | Health & social care | 2020 |
| BCK Property Limited | Real estate | 2021 |
| BCR Garden Design Limited | Administrative & support | 2025 |
| BD Close Protection Limited | Administrative & support | 2026 |
| BD Compliance Systems Limited | Professional & scientific | 2017 |
| BD Heating Ltd | Construction | 2026 |
| BDC Commerce Limited | Professional & scientific | 2024 |
| Bdeye Limited | Administrative & support | 2018 |
| BDH Investments Yorkshire Ltd | Real estate | 2022 |
| BDK Consultancy Limited | Professional & scientific | 2018 |
| Bdlg Ltd | Transport & logistics | 2017 |
| BDN Elite Properties Limited | Financial services | 2025 |
| BDR Property Limited | Water & waste | 1988 |
| BDR Waste Disposal Limited | Water & waste | 1992 |
| BDS Medics Ltd | Real estate | 2018 |
| Bdsj Ltd | Real estate | 2023 |
| Bdss Medics Ltd | Health & social care | 2022 |
| Bdsx Limited | Other services | 2018 |
| BDV Trans Limited | Wholesale & retail | 2018 |
| BDY Transport Ltd | Transport & logistics | 2026 |
| BE Brilliant Group Limited | Administrative & support | 2022 |
| BE Careers Ltd | Administrative & support | 2026 |
| BE More Social Ltd | Professional & scientific | 2012 |
| BE My Bella Ltd | Wholesale & retail | 2019 |
| BE My Social Ltd | Professional & scientific | 2025 |
| BE the Brave CIC | Health & social care | 2026 |
| Beach Stabilisation Ltd | Construction | 2018 |
| Beachbuggyturbo Ltd. | Manufacturing | 2015 |
| Beachmark Limited | Real estate | 1993 |
| Beacon Electric Ltd | Construction | 2022 |
| Beacon Health Group Limited | Health & social care | 2019 |
| Beacon Signs Limited | Manufacturing | 2014 |
| Beacon Waste Limited | Professional & scientific | 1991 |
| Beaconlight Investments Ltd | Real estate | 2025 |
| Beam.Laserclinic Ltd | Other services | 2025 |
| Beanie's Joinery and Construction Limited | Construction | 2016 |
| Bear Construction (Yorkshire) Ltd | Construction | 2024 |
| Bear Plant Rail Maintenance Services Ltd | Manufacturing | 2026 |
| Bear Properties Yorkshire Limited | Real estate | 2026 |
| Bear Real Estate Ltd | Real estate | 2018 |
| Bear Rock Developments Ltd | Construction | 2021 |
| Bearing Brokers Limited | Professional & scientific | 1996 |
| Beautiful Blooms by Sarah Louise Ltd | Wholesale & retail | 2024 |
| Beauty Addiction Nails Ltd | Other services | 2023 |
| Beauty at Doncaster Ltd | Other services | 2013 |
| Beauty Brands Limited | Health & social care | 2011 |
| Beauty by Kelsey Ltd | Other services | 2021 |
| Beauty Harmony LP | | 2025 |
| Beauty Hunters Ltd | Other services | 2016 |
| Beauty LAB Doncaster Ltd | Other services | 2017 |
| Beauty LAB Training Academy Ltd | Education | 2019 |
| Beauty Lounge (Doncaster) Limited | Other services | 2006 |
| Beauty Mattress Ltd | Households | 2015 |
| Beauty Nails 87 Ltd | Other services | 2024 |
| Beauty Shop OK Ltd | Wholesale & retail | 2020 |
| Beauty Slim Pro Ltd | Wholesale & retail | 2025 |
| Beautybyeviebeckett Limited | Other services | 2024 |
| Beaver Star Construction Limited | Construction | 2021 |
| Bebezota Ltd | Transport & logistics | 2023 |
| BEC Sales Group Ltd. | Wholesale & retail | 2024 |
| Beck & Cromwells Ltd | Hospitality | 2026 |
| Beck Aggregates Limited | Construction | 2023 |
| Beckett Booze Limited | Wholesale & retail | 2025 |
| Beckett Property Management Ltd | Real estate | 2024 |
| Beckett Road Mini Market Ltd | Wholesale & retail | 2021 |
| Beckingham Consulting Limited | Extraterritorial | 2023 |
| Beckingham Medical Services Limited | Health & social care | 2011 |
| Bedent Limited | Information & communication | 2000 |
| BEE Happy Support Ltd | Health & social care | 2023 |