| Burnett and Co Financial Planning Ltd | Financial services | 2016 |
| Burnham Enterprise Ltd | Real estate | 2025 |
| Burnt Tree Construction Ltd | Construction | 2025 |
| Bursa Limited | Financial services | 2024 |
| Burtonwood Fabrication Maintenance Limited | Manufacturing | 2012 |
| Bushfield Holdings Limited | Financial services | 2016 |
| Business Adventures Limited | Professional & scientific | 2012 |
| Business Connect Publishing Limited | Information & communication | 2013 |
| Business Proficiency Limited | Administrative & support | 2009 |
| Business Tech Solutions Limited | Information & communication | 2023 |
| Business Workshops Ltd | Professional & scientific | 2019 |
| BVW Limited | Wholesale & retail | 2019 |
| BW Clean Contracts Ltd | Administrative & support | 2021 |
| BWP Inspire Limited | Professional & scientific | 2018 |
| BX Room Limited | Wholesale & retail | 2020 |
| Bycharlottea Ltd | Wholesale & retail | 2025 |
| Byhollie Ltd | Arts & recreation | 2023 |
| C 'N' S Sports Stars Limited | Arts & recreation | 2011 |
| C B Adhesives Limited | Manufacturing | 2006 |
| C M and a J Properties Limited | Real estate | 1998 |
| C P Land Surveyors Limited | Professional & scientific | 2012 |
| C&A Holdings 2020 Limited | Financial services | 2020 |
| C&F Ltd | Real estate | 2025 |
| C&L Landscapes Limited | Administrative & support | 2025 |
| C.E. Niehoff & Co. Limited | Wholesale & retail | 1992 |
| C.U. Property Ltd | Construction | 2023 |
| C.V.Flynn Ltd | Manufacturing | 2025 |
| C6 Energy Reduction Solutions Limited | Construction | 2020 |
| C6 Energy Reduction Systems Limited | Construction | 2019 |
| C6 ERS Limited | Manufacturing | 2012 |
| CA Interior Design Ltd | Professional & scientific | 2024 |
| Caamba Limited | Other services | 2019 |
| Cable Commercial Property Limited | Financial services | 2025 |
| Cable Investment Capital Limited | Financial services | 2025 |
| Cadman & Manpen Systems Limited | Construction | 1970 |
| Cadman Screeding & Underfloor Heating Limited | Construction | 2002 |
| Cafe Bita Ltd | Hospitality | 2024 |
| Caffos Consult Limited | Information & communication | 2014 |
| Caftop Enterprise Ltd | Real estate | 2024 |
| Calico Laine Ltd | Wholesale & retail | 2018 |
| Calman Ltd | Wholesale & retail | 2016 |
| Cam-Steadi Limited | Information & communication | 2017 |
| Camera 10 Limited | Information & communication | 2011 |
| Cameron Maxwell Associates Limited | Professional & scientific | 1997 |
| Camino City Sports Care & Consultancy Ltd | Arts & recreation | 2024 |
| Campbell Property Holdings Ltd | Financial services | 2020 |
| Cancer Care Ltd | Information & communication | 2026 |
| Candid CO100 Ltd | Information & communication | 2021 |
| Cannella Limited | Construction | 1997 |
| Cape International Limited | Wholesale & retail | 2021 |
| Capital Economy Solutions Ltd | Real estate | 2010 |
| Captain COD (Sale) Limited | Hospitality | 2003 |
| Captivate Innovate Investment Ltd | Professional & scientific | 2025 |
| Capture SP Studio Limited | Information & communication | 2023 |
| Capview Ltd | Information & communication | 2018 |
| Cara Gibbs Hairdressing Ltd | Other services | 2018 |
| Cara Nursing Limited | Health & social care | 2023 |
| Carbon Reduction Committed Ltd | Energy | 2010 |
| Cardio Consulting Ltd | Health & social care | 2024 |
| Care Captains Ltd | Health & social care | 2020 |
| Caribou Solutions Ltd | Professional & scientific | 2025 |
| Caring Hands Activities Ltd | Education | 2024 |
| Carlito Limited | Professional & scientific | 2020 |
| Carrig & Baxter Limited | Professional & scientific | 2005 |
| Carrington GAS Services Limited | Professional & scientific | 2019 |
| Carryout Solutions Limited | Hospitality | 2001 |
| CAS Consultancy UK Ltd | Administrative & support | 2020 |
| Cascade Legal Limited | Professional & scientific | 2013 |
| Cascaid Health Ltd | Education | 2024 |
| Cashco Limited | Wholesale & retail | 2017 |
| Cashco Midlands Limited | Wholesale & retail | 1995 |
| Cashco Stourbridge Limited | Wholesale & retail | 2018 |
| Cashco West Ltd | Real estate | 2019 |
| Cassiopeia ESP Ltd | Professional & scientific | 2023 |
| Cast Management Limited | Professional & scientific | 2024 |
| Castle Chemicals Trustees Limited | Administrative & support | 2023 |
| Castoman Limited | Other services | 2024 |
| Catalyst Hygiene Ltd | Water & waste | 2025 |
| Catalyst Water Limited | Professional & scientific | 2022 |
| Catax Manchester Limited | Professional & scientific | 2014 |
| Catellus Ltd | Information & communication | 2021 |
| Catfox Limited | Professional & scientific | 2012 |
| Cath Kennedy Limited | Professional & scientific | 2026 |
| Cathedral Care Services Limited | Health & social care | 2021 |
| Cathedral Living Group Limited | Real estate | 2013 |
| Catherine Clarke Limited | Professional & scientific | 2012 |
| Catherine Ingram Physiotherapy Ltd | Health & social care | 2017 |
| Catway Training Ltd | Education | 2023 |
| Cause & Effect TV Ltd | Information & communication | 2025 |
| Cause Focus Ltd | Information & communication | 2023 |
| CC Joinery North West Ltd | Professional & scientific | 2023 |
| CCL Claims Ltd | Professional & scientific | 2025 |
| CCM (MCR) Limited | Construction | 2025 |
| CDA Business Consultancy Group Limited | Professional & scientific | 2018 |
| CDF Pipework Ltd | Construction | 2023 |
| Cdgh PUB Co Ltd | Wholesale & retail | 2018 |
| CDI Solutions Ltd | Construction | 2010 |
| CDS Recruitment Limited | Administrative & support | 2009 |
| CED Construction Ltd | Construction | 2026 |
| Cedar Quays Limited | Real estate | 2025 |