| Boardwalk Construction Ltd | Construction | 2020 |
| Bolton Young Men's Christian Association | Hospitality | 1991 |
| Bond Real Estate Limited | Real estate | 2001 |
| Bonder Developments Limited | | 1985 |
| Bookvale Ltd. | Wholesale & retail | 2008 |
| Boutique Hospitality Ltd | Administrative & support | 2017 |
| BP Legacy Health Solutions Ltd | Health & social care | 2026 |
| Braces Limited | | 1985 |
| Brand Services Limited | Manufacturing | 2005 |
| Bridgewater Building Company Limited | Construction | 2005 |
| Bridgewater Opex Services Ltd | Administrative & support | 2023 |
| Bridlington Cash and Carry Limited | Wholesale & retail | 2002 |
| Brightdesk Limited | Manufacturing | 2005 |
| Brooklands Place Marketing Services Limited | Financial services | 2007 |
| Buckleigh & Williams IT Ltd | Administrative & support | 2016 |
| Build the Future 23 Ltd | Construction | 2022 |
| Burrow Humphreys (Midlands) Limited | Financial services | 2004 |
| Bxrbers Ltd | Other services | 2019 |
| C & C Ironmongers Ltd | Wholesale & retail | 2022 |
| C.H.D. (Northampton) Limited | Real estate | 1948 |
| Calluna Mews Management Company Limited | Households | 1994 |
| Camfields Limited | Wholesale & retail | 2004 |
| Camlee Capital Limited | Administrative & support | 2012 |
| Camlee EBT Trustee Limited | Professional & scientific | 2020 |
| Camouflage Bars Ltd | Hospitality | 2019 |
| Casogera Consulting Ltd | Professional & scientific | 2015 |
| Cassandra Media Limited | Education | 2007 |
| Castle View Community and Fitness Centre Limited | Arts & recreation | 2009 |
| Cavendish Sports Limited | Manufacturing | 1978 |
| CBH Consulting Ltd | Administrative & support | 2017 |
| Celsius Air Conditioning Limited | Energy | 1991 |
| Celsius Air Conditioning Services Limited | Manufacturing | 1991 |
| Centeng Limited | Manufacturing | 2002 |
| Chai Group Ltd | Construction | 2020 |
| Chemzen Technologies Limited | Wholesale & retail | 2021 |
| Chenery Catering Limited | Hospitality | 2015 |
| Cheq Payments Limited | Administrative & support | 2022 |
| Chico's Chai Ltd | Hospitality | 2022 |
| Chilichicks Ltd | Hospitality | 2021 |
| Chiropractic First Group Ltd | Health & social care | 2015 |
| Chlorogas Limited | Construction | 2020 |
| Chris Davies Ltd | Professional & scientific | 2014 |
| Chrom Tech Ltd. | Administrative & support | 2000 |
| Citadel Homes (LS) Limited | Construction | 2020 |
| Citron Press PLC | Professional & scientific | 1998 |
| City Blue Ventures Limited | Hospitality | 2016 |
| CJR Installations Ltd | Construction | 2018 |
| Claphams Bakery Limited | Wholesale & retail | 2016 |
| Claritys 33 Limited | Other services | 2014 |
| Clay Properties Limited | Administrative & support | 2003 |
| Clean Reach NW Limited | Administrative & support | 2014 |
| Click City Digital Limited | Other services | 2017 |
| Cmht Events Ltd | Professional & scientific | 2017 |
| CNJ Engineers Ltd | Construction | 2004 |
| Coast and Country Design and Build Ltd | Construction | 2014 |
| Codenta Limited | Health & social care | 2021 |
| Codeplay Software Limited | Information & communication | 2002 |
| Coffee 90 Delice Limited | Hospitality | 2024 |
| Coinfactory Limited | Administrative & support | 1998 |
| Collier & Wood Ltd | Wholesale & retail | 2015 |
| Commercial Services(Nw) Ltd | Real estate | 2026 |
| Community Nine Limited | Construction | 2021 |
| Compendium Biotechnology Ltd | Other services | 2017 |
| Cookson Limited | Manufacturing | 1964 |
| Cool Runnings Foods Limited | Hospitality | 2003 |
| Core Engineering Consultants Limited | Professional & scientific | 2007 |
| Cornerstone Leisure Limited | Hospitality | 2022 |
| Cosmo Graphis Imaging Ltd | Information & communication | 1987 |
| Coverglass Limited | Financial services | 1997 |
| Craven & Company (Estates) Limited | Real estate | 2017 |
| Craven & Nightingale Limited | Real estate | 2000 |
| Craven Holdings Limited | Professional & scientific | 2015 |
| Craven Residential Holdings Limited | Professional & scientific | 2016 |
| Craven Scaffolding Limited | Construction | 2016 |
| Cravern Properties Limited | Real estate | 1997 |
| Crawford Manufacturing Limited | Manufacturing | 2012 |
| Creative CI Ltd | Professional & scientific | 2014 |
| Crocodile Media Ltd | Information & communication | 2008 |
| CS Chimney Services Ltd | Construction | 2013 |
| Csbaker Construction Ltd | Construction | 2021 |
| Curantis Care Ltd | Administrative & support | 2021 |
| Cyber Trading Limited | Other services | 2006 |
| D & J Franks Plumbing & Heating Limited | Construction | 2012 |
| D Craven Limited | Construction | 1986 |
| D&B Fleet Solutions Limited | Transport & logistics | 2019 |
| D. Hupton Joinery Ltd | Construction | 2004 |
| D. Salvesen Limited | Health & social care | 2009 |
| Daeey Barbers Ltd | Other services | 2017 |
| Datachem Limited | | 1982 |
| David Graham Developments Ltd | Construction | 1999 |
| Davisons Management Limited | Professional & scientific | 2017 |
| Dawn Services M & E Limited | Construction | 2020 |
| Dawson Commercial and Asset Finance Ltd | Financial services | 2004 |
| Dawson's Academy of Dance & Stage Limited | Education | 2004 |
| DBS (NW) Limited | Construction | 2008 |
| Deanway Homes Limited | Real estate | 2004 |
| Delstar International, Limited | Manufacturing | 2001 |
| Dermot Craven Investments Limited | Real estate | 2016 |
| Design Promotion and Marketing Services Limited | Professional & scientific | 2005 |
| Devarani Saravanan Ltd | Transport & logistics | 2025 |