| Autoworks Service and Maintenance Ltd | Wholesale & retail | 2026 |
| Auxano Opulent Synergy Ltd | Real estate | 2024 |
| AV UK Foods Ltd | Manufacturing | 2024 |
| Ava's Accessory Box Ltd | Wholesale & retail | 2025 |
| Available Transport Nationwide Limited | Transport & logistics | 2023 |
| Avantfix Limited | Construction | 2023 |
| Avasa Training & Education Ltd | Education | 2019 |
| AVS Global Limited | Wholesale & retail | 2016 |
| Avtaar and Sons Ltd | Wholesale & retail | 2025 |
| AW Car Sales Ltd | Wholesale & retail | 2026 |
| Awakala Car Valeting Limited | Other services | 2018 |
| Axsys Limited | Health & social care | 2019 |
| Ayaan IT Consulting Ltd | Information & communication | 2013 |
| Ayaz Financial Management Ltd | Administrative & support | 2019 |
| Azasi Ltd | Wholesale & retail | 2021 |
| Azizkoula Ltd | Other services | 2024 |
| Azucar Ltd | Arts & recreation | 2023 |
| B & J Khaira LLP | | 2024 |
| B&G Property Management (WM) Limited | Real estate | 2018 |
| B.M.Mo Ltd | Construction | 2026 |
| Baani Transport Limited | Transport & logistics | 2025 |
| Baath Indoor Cricket Nets & Sports Centre Ltd | Arts & recreation | 2024 |
| Baba Chinta JI Ltd | Transport & logistics | 2024 |
| Babybot Ltd | Wholesale & retail | 2025 |
| Bache GT Contractors Ltd | Construction | 2019 |
| Badesha Transport Ltd | Transport & logistics | 2020 |
| Bagri Construction Ltd | Construction | 2012 |
| Bains Discount Ltd | Wholesale & retail | 2004 |
| Baker Carparts Limited | Wholesale & retail | 2025 |
| Bal's Beauty Ltd | Wholesale & retail | 2025 |
| Banah Ltd | Real estate | 2025 |
| Bangin' Coffee Ltd | Manufacturing | 2026 |
| Bangladeshi Women's Association Limited | Information & communication | 2012 |
| Barbers at Tipton Ltd | Other services | 2022 |
| Bargain Magpie Ltd | Wholesale & retail | 2022 |
| Barwick Green Investments Limited | Financial services | 2023 |
| Bathroom Bubbles Limited | Wholesale & retail | 2008 |
| Baybrook Properties Limited | Real estate | 2025 |
| BD International Ltd | Transport & logistics | 2025 |
| BD Services Midlands Limited | Information & communication | 2015 |
| Beacon of Hope Supported Living UK Limited | Administrative & support | 2026 |
| BEE Sham Limited | Wholesale & retail | 2026 |
| Beknana Foodtec Support Limited | Professional & scientific | 2015 |
| Bell Red Limited | Wholesale & retail | 2020 |
| Benbo Limited | Manufacturing | 2019 |
| Berkshire Capital Management Limited | Real estate | 2016 |
| Besnik Foods Limited | Hospitality | 2025 |
| Bespocare Plus Ltd | Health & social care | 2022 |
| Bespoke Thermal Bifolds Ltd | Manufacturing | 2023 |
| Bestbait Trading Recruitment Ltd | Health & social care | 2024 |
| Better Building Solutions Limited | Construction | 2012 |
| Beyond Basics Ltd | Wholesale & retail | 2025 |
| BFC Furniture (Midlands) Limited | Wholesale & retail | 2014 |
| Bharaj & Co Ltd | Transport & logistics | 2018 |
| Bhogal Brothers LLP | | 2007 |
| Bhogal Properties Ltd | Real estate | 2022 |
| Bias Boutique by L & M Ltd | Wholesale & retail | 2026 |
| Big 5 Vape Shop Ltd | Wholesale & retail | 2025 |
| Big 5 Vapejuice UK Ltd | Wholesale & retail | 2020 |
| Bigger Impact Ltd | Professional & scientific | 2024 |
| BIH Build Limited | Information & communication | 2014 |
| Bilga Fitters Limited | Construction | 2021 |
| Bindu Foods Ltd | Hospitality | 2025 |
| Birbrothers Limited | Professional & scientific | 2025 |
| Birdworld Camping Ltd | Hospitality | 2026 |
| Birmingham Orthotic Services Ltd | Manufacturing | 2019 |
| Bjhhuk Limited | Professional & scientific | 2024 |
| BJM Trans Ltd | Transport & logistics | 2013 |
| Black Country Builds Ltd | Construction | 2026 |
| Black Country Fire Protection Limited | Manufacturing | 2020 |
| Black Country Money Matters CIC | Other services | 2023 |
| Black Country Motorcycle Training Ltd | Education | 2015 |
| Black Country Motorz Ltd | Wholesale & retail | 2025 |
| Black Country Roofing Limited | Construction | 2002 |
| Black Country Rope and Lifting Ltd | Manufacturing | 2021 |
| Black Country Vehicles Ltd | Wholesale & retail | 2016 |
| Black Country Verandas UK Ltd | Construction | 2025 |
| Blackapedia Ltd | Education | 2026 |
| Blackdogtours Ltd | Transport & logistics | 2022 |
| Blackt Services Limited | Professional & scientific | 2025 |
| Blackweld Limited | Manufacturing | 1985 |
| Blanco Social Ltd | Professional & scientific | 2025 |
| Blessmeche Healthtech Limited | Information & communication | 2026 |
| Blinds Direct Limited | Manufacturing | 2016 |
| BLJ Transport Limited | Transport & logistics | 2019 |
| Bloomfield Resources Ltd | Water & waste | 2024 |
| Blossoms Homes Ltd | Health & social care | 2025 |
| Blue Circle Enterprises Ltd | Administrative & support | 2007 |
| Blue Line Haulage Ltd | Transport & logistics | 2026 |
| Blue Line Utilities & Energy Contractors Ltd | Construction | 2019 |
| Blue Logan Limited | Administrative & support | 2015 |
| Blue Response Security UK Ltd | Administrative & support | 2019 |
| BM Roofing 26 Limited | Construction | 2026 |
| BMS Transport U.K. Ltd | Transport & logistics | 2025 |
| Bmsl Constructions Ltd | Construction | 2020 |
| Bodill Parker Limited | Manufacturing | 1946 |
| Bodoni Limited | Construction | 2018 |
| Bogdanadrian Ltd | Transport & logistics | 2020 |
| Bogdancibor Ltd | Transport & logistics | 2024 |
| Bonum Interiors Ltd | Construction | 2017 |