| Burntwood Plumbing and Heating Limited | Construction | 2023 |
| Burton Aerial Services Limited | Construction | 2005 |
| Burton Boat Co Ltd | Manufacturing | 2016 |
| Burton Gym Ltd | Arts & recreation | 2017 |
| Buses Unlimited Limited | Transport & logistics | 2022 |
| Bushido Martial Arts Walsall Ltd | Arts & recreation | 2016 |
| Business Accounting Ltd | Administrative & support | 2018 |
| Business Development Service Limited | Professional & scientific | 1989 |
| Business Energy Switchers Limited | Professional & scientific | 2015 |
| Business Interior Concepts Limited | Construction | 2001 |
| Business Lunches Limited | Hospitality | 2009 |
| Business NRG Ltd | Professional & scientific | 2012 |
| Butfam Investments Limited | Other services | 2025 |
| Butterflies Day Nursery and Childcare Ltd | Education | 2014 |
| Butterfly Development Ltd | Professional & scientific | 2019 |
| Button 86 Limited | Administrative & support | 2024 |
| Buzzing Hive Ltd | Professional & scientific | 2019 |
| Byksg Limited | Education | 2024 |
| Byre Consulting Limited | Professional & scientific | 2025 |
| C & G Mowers (Lichfield) Ltd | Manufacturing | 2021 |
| C & M Property Developments Ltd | Real estate | 2026 |
| C & N Investments Limited | Real estate | 2013 |
| C & P Goodyear LLP | | 2015 |
| C & R Holdings (Midlands) Limited | Other services | 2017 |
| C 1 Hair and Bridal Specialists Limited | Other services | 2018 |
| C B a 2013 Limited | Other services | 2014 |
| C Belton GAS Services Limited | Professional & scientific | 2018 |
| C Brown Construction Management Ltd | Construction | 2024 |
| C L Catering (Midlands) Ltd | Hospitality | 2009 |
| C Russell Properties Limited | Real estate | 2025 |
| C&D Catering Ltd | Hospitality | 2021 |
| C&J Leathergoods Ltd | Wholesale & retail | 2024 |
| C&J Masonic Catering Limited | Hospitality | 2021 |
| C-Rail Technical Services Ltd | Professional & scientific | 2024 |
| C-Tech Consultancy (Mids) Ltd | Professional & scientific | 2025 |
| C.Filip Limited | Construction | 2017 |
| C.J.C. Construction Limited | Construction | 2014 |
| C.J.Whelan Limited | Hospitality | 2024 |
| C.N.A. Risk Management Ltd | Administrative & support | 2003 |
| C.P Roofers Ltd | Construction | 2023 |
| C.P.Instruments Limited | Professional & scientific | 2003 |
| C1 Hair and Beauty Academy Ltd | Other services | 2021 |
| Cactus BOY Studio Ltd | Professional & scientific | 2026 |
| CAD Graphics Studio Ltd | Professional & scientific | 2010 |
| CAD Group Bespoke Joinery Ltd | Manufacturing | 2021 |
| Cadeb Limited | Other services | 1985 |
| Cadlogic Limited | Information & communication | 1988 |
| Cadlogic Software Limited | Information & communication | 1993 |
| Cae’R Blaidd Limited | Real estate | 2023 |
| Cafe Prego Limited | Hospitality | 2023 |
| Cafe Prego Shenstone Limited | Hospitality | 2023 |
| Cahoots Business Consultants Ltd | Administrative & support | 2018 |
| Caips Group Ltd | Real estate | 2020 |
| Cairn IT Services Limited | Information & communication | 2013 |
| Cala at Waterbeach Leasehold Management Company Limited | Households | 2022 |
| Calder Tree Services Limited | Agriculture & fishing | 2009 |
| Cali Blue Flooring Limited | Construction | 2016 |
| Calibre Nexus Ltd | Professional & scientific | 2025 |
| Caliniux Ltd | Transport & logistics | 2023 |
| Calmballad Ltd | Transport & logistics | 2019 |
| Calrome Ltd | Real estate | 2016 |
| Calvenace Limited | Agriculture & fishing | 2021 |
| Cameron Buchanan Ltd | Professional & scientific | 2014 |
| Campbell & Jones Limited | Households | 2025 |
| Candied Appeal CIC | Education | 2025 |
| Caneden Limited | Construction | 1987 |
| Canna Cafe Ltd | Manufacturing | 2009 |
| Cannock CNC Ltd | Construction | 2024 |
| Canwell Associates Limited | Professional & scientific | 2024 |
| Capilano Associates Ltd | Administrative & support | 2025 |
| Capital Refurbishment Solutions Ltd | Construction | 2019 |
| Car Corner Avenue Ltd | Wholesale & retail | 2025 |
| Cardiff Aqua Park Limited | Arts & recreation | 2016 |
| Cardigan Cards Limited | Manufacturing | 2008 |
| Care Improvement & Transformation Ltd | Professional & scientific | 2026 |
| Caremost Group Ltd | Health & social care | 2024 |
| Carl Knibb Art Ltd | Wholesale & retail | 2019 |
| Carl Mears Limited | Agriculture & fishing | 2010 |
| Carlton Mews Management Limited | Households | 2000 |
| Carol's Care Agency Limited | Health & social care | 2021 |
| Carolan and O'Connor Limited | Construction | 1972 |
| Carole Mills Associates Limited | Professional & scientific | 2020 |
| Caroline Senley Designs Limited | Administrative & support | 2005 |
| Carow Limited | Professional & scientific | 2021 |
| Carp Intelligence Ltd | Information & communication | 2024 |
| Carrington Devereaux Limited | Construction | 2014 |
| Carter Foundries Limited | Real estate | 1958 |
| Carthag Plant Limited | Professional & scientific | 2001 |
| Castle Windows (Midlands) Limited | Manufacturing | 2010 |
| Castlebridge Property Ltd | Real estate | 2025 |
| Catalyx 37 Ltd | Professional & scientific | 2026 |
| Cathedral Care Solutions Ltd | Health & social care | 2026 |
| Cathedral Construction Ltd | Construction | 2013 |
| Cathedral Construction Roofing Ltd | Construction | 2024 |
| Cathedral Hearing Limited | Wholesale & retail | 2024 |
| Cathedral Mobility Services Limited | Professional & scientific | 2018 |
| Cathedral Property Development Limited | Construction | 2007 |
| Catia Force Limited | Professional & scientific | 2009 |
| Cawarden Brick & Tile Co. Limited | Construction | 1996 |
| Cawarden Civils & Groundworks Co Limited | Construction | 2025 |