| Anille Ltd | Wholesale & retail | 2024 |
| Anime Singh Ltd | Wholesale & retail | 2026 |
| Anita & Martin Transport Limited | Transport & logistics | 2026 |
| Annx Ltd | Administrative & support | 2022 |
| Another Level Scaffolding Solutions Limited | Construction | 2020 |
| Antonio Santorelli Black Belt Academy Limited | Arts & recreation | 2005 |
| AOA Empire Limited | Professional & scientific | 2021 |
| AP Surfacing Limited | Construction | 2018 |
| Aperture Events Ltd | Professional & scientific | 2013 |
| Apex Conservatory Roofing Company Ltd | Construction | 2010 |
| API Properties Limited | Other services | 2016 |
| Apollo Dental Group Limited | Health & social care | 2026 |
| Applied Homes Limited | Construction | 2023 |
| Applied Interiors Limited | Construction | 2012 |
| Applied Research Limited | Administrative & support | 1996 |
| APT European Ltd | Transport & logistics | 2019 |
| Aquaworld Limited | Extraterritorial | 2003 |
| Arca Physiotherapy & Training Ltd | Other services | 2021 |
| Archive One Collectables Limited | Wholesale & retail | 2026 |
| Argent Builders Limited | Construction | 2009 |
| Arlecroft Limited | Professional & scientific | 1989 |
| Arruba Holistic Healthcare Ltd | Professional & scientific | 2022 |
| Art in Motion Academy Ltd | Arts & recreation | 2021 |
| Art in Motion Dance Academy Ltd | Arts & recreation | 2017 |
| Asbbabartleygreen Ltd | Arts & recreation | 2024 |
| Ashbrooke Property Solutions Limited | Real estate | 2021 |
| Ashtons Accountants Limited | Professional & scientific | 2015 |
| ASJ Catering Ltd | Hospitality | 2026 |
| Assadkhanphotography Limited | Professional & scientific | 2019 |
| Associated Bearing Co Limited | Other services | 1996 |
| Association of Consulting Scientists Limited | Professional & scientific | 1990 |
| ATB Special Products Limited | Manufacturing | 1949 |
| Atelier 88 Architects Ltd | Professional & scientific | 2024 |
| Athene ARC Ltd | Wholesale & retail | 2020 |
| Ativra Ltd | Wholesale & retail | 2025 |
| Autos'R'Uss Ltd | Wholesale & retail | 2022 |
| Avasthi Group Ltd | Real estate | 2015 |
| Avik Limited | Real estate | 2025 |
| AWE Inspired Building & Landscaping Limited | Construction | 2026 |
| Awuraba Ltd | Wholesale & retail | 2020 |
| Azzatools&Accessories Ltd | Wholesale & retail | 2025 |
| B & G Grinding & Fluting Services Limited | Manufacturing | 2001 |
| B.B. Price Limited | Manufacturing | 1930 |
| B.M. Close Protection Training Ltd. | Education | 2012 |
| B.R.J. Erection Limited | Wholesale & retail | 1995 |
| B16 Group Ltd | Professional & scientific | 2026 |
| Babylon Barber Old Hill Ltd | Other services | 2025 |
| BAH 66 Limited | Hospitality | 2022 |
| Bains Builders Limited | Construction | 2006 |
| Baker by Night Ltd | Manufacturing | 2025 |
| Bamyet Afro Caribbean Food Store Limited | Wholesale & retail | 2024 |
| Bannisteel Limited | Manufacturing | 2005 |
| Barvic Limited | Wholesale & retail | 2006 |
| Barzillai Hingley & Sons Limited | Manufacturing | 1951 |
| Bass Hunt & Co. LLP | | 2018 |
| BBH (Birmingham) Limited | Hospitality | 2019 |
| BC Furniture Limited | Manufacturing | 2021 |
| BCC & C Limited | Wholesale & retail | 2023 |
| Bcur Services Ltd | Administrative & support | 2023 |
| Bdmt Limited | Professional & scientific | 2007 |
| BE OUR Guest (Midlands) Limited | Hospitality | 2019 |
| Beaconsfield Products (Agricultural) Limited | Manufacturing | 1994 |
| Bearmore Lifting Services Ltd | Manufacturing | 2015 |
| Beautandco Ltd | Other services | 2025 |
| Beautiful Rose Limited | Other services | 2017 |
| BEC Catering Limited | Hospitality | 2025 |
| Beech Midlands Ltd | Construction | 2020 |
| Beechgrove Design Limited | Professional & scientific | 2011 |
| BEN Butler Limited | Construction | 2017 |
| BEN Hawkins Limited | Wholesale & retail | 2026 |
| BEN Trade Birmingham Ltd | Construction | 2025 |
| Besco Engineering Limited | Professional & scientific | 2013 |
| Bespin Property Ltd | Real estate | 2018 |
| Bestnightsout Ltd | Hospitality | 2015 |
| Betonia IT Limited | Information & communication | 2015 |
| Bharaj Medical Services Limited | Real estate | 2012 |
| Bharaj Property Ltd | Real estate | 2022 |
| Bicknell Enterprises Ltd | Wholesale & retail | 2021 |
| Big Boat Transport Limited | Transport & logistics | 2017 |
| BIH Engineering Limited | Professional & scientific | 2021 |
| Billingham Sales Limited | Manufacturing | 2017 |
| Birks Developments Limited | Real estate | 2024 |
| Birmingham Beauty Ltd | Other services | 2025 |
| Birmingham Skin & Physio Clinic Ltd | Health & social care | 2026 |
| Bknights Solutions Ltd | Construction | 2023 |
| Black Country Basketball Club C.I.C. | Education | 2023 |
| Black Country Bodywork Limited | Wholesale & retail | 2017 |
| Black Country Leisure Limited | Arts & recreation | 2007 |
| Black Country Pallets Limited | Other services | 2008 |
| Black Country Properties ( Midlands) Limited | Real estate | 2009 |
| Black Country Refurbishments Ltd | Manufacturing | 2012 |
| Blackheath Car & Commercial Breakers Limited | Administrative & support | 2011 |
| Blackmills Upholstery Ltd | Manufacturing | 2016 |
| Blakeway Property Development and Management Ltd | Real estate | 2025 |
| Blakeways Access Limited | Energy | 2017 |
| Bloomunity Creators Network Limited | Other services | 2025 |
| BLU Bakes Ltd | Manufacturing | 2024 |
| BM Bars & Pubs Limited | Hospitality | 2026 |
| BMG Propco UK Ltd | Real estate | 2022 |
| Bolgera Limited | Administrative & support | 2023 |