| Byetown Birmingham Ltd | Hospitality | 2026 |
| Byetown Ltd | Hospitality | 2026 |
| Byford Property Group Ltd | Real estate | 2019 |
| Byghy Express Limited | Transport & logistics | 2025 |
| Byhana Ltd | Wholesale & retail | 2024 |
| Byker Estates Ltd | Hospitality | 2023 |
| Bymohsin Holdings Limited | Wholesale & retail | 2023 |
| Bymor Limited | Real estate | 2018 |
| Bynage Healthcare Ltd | Health & social care | 2019 |
| Bynoge Technologies Ltd | Wholesale & retail | 2020 |
| Byolivia Boutique Ltd | Wholesale & retail | 2025 |
| Byprecious Ltd | Other services | 2026 |
| Byrayans Ltd | Wholesale & retail | 2025 |
| Byrd’S Mechanical Services Ltd | Construction | 2025 |
| Byrne Brickwork & Sons Ltd | Construction | 2018 |
| Byrne Electrical & Building Services Ltd | Construction | 2010 |
| Byrne on Wheels Ltd | Wholesale & retail | 2026 |
| Byrne's Property Consultants Ltd | Professional & scientific | 2025 |
| Byrom Developments Ltd | Real estate | 2026 |
| Byron Associates Limited | Professional & scientific | 2016 |
| Byron Astor Property Group Ltd | Real estate | 2025 |
| Byron Developments Ltd | Construction | 2025 |
| Byssworks Ltd | Professional & scientific | 2023 |
| Byte Code Services Ltd | Information & communication | 2024 |
| Byte Distribution Ltd | Wholesale & retail | 2015 |
| Bytemart Limited | Wholesale & retail | 2026 |
| Bytes Bazaar Limited | Wholesale & retail | 2025 |
| Bytesnap Design Limited | Information & communication | 2008 |
| Bytesnap Holdings Limited | Information & communication | 2021 |
| Bytespheresolutions Limited | Information & communication | 2025 |
| Bytewise Health Info Ltd | Administrative & support | 2016 |
| Bytex AI Ltd | Information & communication | 2026 |
| Byvoria Group Ltd | Wholesale & retail | 2022 |
| BZ Motors Ltd | Wholesale & retail | 2019 |
| BZH Properties Ltd | Households | 2023 |
| Bébé Carrier Ltd | Financial services | 2016 |
| C & a Window Systems Ltd | Construction | 2017 |
| C & B Birmingham Holdings Limited | Financial services | 2024 |
| C & C Services Ltd | Administrative & support | 2022 |
| C & D Enterprise Limited | Real estate | 2018 |
| C & E Developments Limited | Administrative & support | 2022 |
| C & E Plating Limited | Manufacturing | 1976 |
| C & G Groundworks Ltd | Construction | 2023 |
| C & G Medical Limited | Health & social care | 2013 |
| C & H Trade Ltd | Professional & scientific | 2021 |
| C & K Furniture Ltd | Wholesale & retail | 2025 |
| C & K Motors Ltd | Wholesale & retail | 2025 |
| C & M Clinical Research Consultancy Ltd | Health & social care | 2022 |
| C & M Lettings Ltd | Real estate | 2019 |
| C & M Ventures Limited | Manufacturing | 2005 |
| C & N Limited | Real estate | 2025 |
| C & N Pipeline Limited | Energy | 2017 |
| C & P Leisure Bistro Limited | Wholesale & retail | 2023 |
| C & P Logistics Ltd | Transport & logistics | 2018 |
| C & R Fabrications Holdings Limited | Manufacturing | 2021 |
| C & R Shipping Ltd | Transport & logistics | 2020 |
| C & S Property Investments Limited | Real estate | 2016 |
| C & S Property Management Services Ltd | Real estate | 2020 |
| C 2 Zero Limited | Administrative & support | 2004 |
| C a Services (Midlands) Ltd | Administrative & support | 2002 |
| C and B Bodyshop Ltd | Other services | 2017 |
| C and S Grant Properties Ltd | Real estate | 2022 |
| C B Enterprises Limited | Construction | 2008 |
| C B Frost (New Holdings) Limited | Professional & scientific | 2017 |
| C B Frost Holdings Limited | Professional & scientific | 2001 |
| C Best House Limited | | 2015 |
| C Birmingham Ltd | Administrative & support | 2023 |
| C Brettell Ltd | Construction | 2007 |
| C Brown Services Limited | Professional & scientific | 2005 |
| C Clarke Utilities Ltd | Construction | 2016 |
| C Collier Maintenance Limited | Households | 2024 |
| C Cusack Ltd | Other services | 2013 |
| C D & J H Medical Limited | Health & social care | 1999 |
| C D Elliott Brickwork Contractors Ltd | Construction | 2016 |
| C D Excel Limited | Construction | 2005 |
| C DE Vision Limited | Health & social care | 2005 |
| C DE Vision Productions Ltd | Health & social care | 2017 |
| C Dinu Transport Ltd | Transport & logistics | 2023 |
| C E Buggins & Co Limited | Health & social care | 2009 |
| C F E Holdings Limited | Financial services | 2018 |
| C F E Installations Limited | Construction | 2006 |
| C Global Group Holdings Limited | Financial services | 2019 |
| C Good Hope Limited | | 2014 |
| C Grant (Holdings) Limited | Financial services | 2024 |
| C H Barnett (Holdings) Limited | Professional & scientific | 2004 |
| C H Marketing Communications Ltd | Professional & scientific | 2013 |
| C H Parker (Kings Norton) Limited | Construction | 2010 |
| C Irvine Design Limited | Professional & scientific | 2016 |
| C J Cassin Ltd | Construction | 2010 |
| C J Houston Ltd | Construction | 2005 |
| C J M Rooflines Ltd | Administrative & support | 2021 |
| C J Maguire Limited | Construction | 2010 |
| C J Parkes Ltd | Professional & scientific | 2023 |
| C J Waste Solutions Ltd | Water & waste | 2018 |
| C Jennings ENT Services Ltd. | Health & social care | 2011 |
| C K Electronics (UK) Limited | Manufacturing | 2016 |
| C K P Ltd | Hospitality | 2021 |
| C Kumar Ltd | Professional & scientific | 2025 |
| C Lawlor Roofing Limited | Construction | 2013 |
| C Logistics (South) Ltd | Transport & logistics | 2025 |