| British Columbia Holdings Ltd | Real estate | 2025 |
| Brixton Events Group Ltd | Arts & recreation | 2026 |
| Brixton Trading Ltd | Wholesale & retail | 2022 |
| Buckingham Medical Limited | Professional & scientific | 2019 |
| Bundys Models Limited | Wholesale & retail | 2017 |
| C S S. Delivery Ltd | Transport & logistics | 2018 |
| C V Optics Limited | Wholesale & retail | 1997 |
| Cachet Developments Limited | Real estate | 2006 |
| Cadsec Consulting Ltd | Professional & scientific | 2025 |
| Calverton Pharmacy Limited | Health & social care | 2010 |
| Cambridge Palace Limited | Real estate | 2026 |
| Canterbury Cosmetics (UK) Ltd. | Other services | 2012 |
| Car Check Centre Limited | Real estate | 1998 |
| Cardoc Limited | Wholesale & retail | 2003 |
| Carleton Court Residential Home Ltd | Health & social care | 2003 |
| Casa Grande (UK) Ltd | Administrative & support | 1998 |
| Catering Plaiuri Bucovinene Ltd. | Hospitality | 2012 |
| Cedar Dental Care Ltd | Health & social care | 2010 |
| Cellular Nutra Limited | Wholesale & retail | 2026 |
| Centre for Media Monitoring | Information & communication | 2025 |
| Cephas Dowling Limited | Real estate | 2016 |
| Cerebrent Systems UK Ltd | Information & communication | 2025 |
| Chagar Investments Ltd | Real estate | 2025 |
| Chamberlin Associates Ltd | Information & communication | 2025 |
| Champa Patel Limited | Other services | 2023 |
| Chand Asset Management | Financial services | 2025 |
| Chandos London Limited | Households | 2021 |
| Chartac Directors Limited | Administrative & support | 2005 |
| Chartac Secretaries Limited | Professional & scientific | 1999 |
| Chartac Ventures Limited | Real estate | 2023 |
| Cheadle Royston Limited | Professional & scientific | 2018 |
| Cheyenne Westphal Limited | Wholesale & retail | 2025 |
| Chicken Master Ltd | Hospitality | 2018 |
| Chiltern Court (Buckingham Road) Limited | Real estate | 2014 |
| Chiltern Maintenance Company Limited | Administrative & support | 1987 |
| Chin Chin Ltd | Hospitality | 2021 |
| Chit Ltd | Wholesale & retail | 2020 |
| Churchill Financial Limited | Financial services | 2018 |
| Churro Cowboy Ltd | Hospitality | 2025 |
| Clearwater Marine Holdings Limited | Professional & scientific | 1996 |
| Clearwater Marine Technology Limited | Construction | 1992 |
| Closet Crafts Ltd | Professional & scientific | 2018 |
| Coco Hospitality Ltd | Hospitality | 2025 |
| Codebridge Ltd | Information & communication | 2020 |
| Colive Building Services Ltd | Construction | 2026 |
| Commercial Funding Solutions Ltd | Financial services | 2015 |
| Conceptual Engineering Limited | Professional & scientific | 2014 |
| Consilium Ltd | Financial services | 2017 |
| Cool Beans Limited | Administrative & support | 1997 |
| Coombe Hill Assets & Investments Ltd | Real estate | 2026 |
| Copperdell Consultants Ltd | Construction | 2022 |
| Cornelius Property Management Limited | Real estate | 2014 |
| Cort Carpentry Limited | Construction | 2017 |
| Corus Trading Ltd | Wholesale & retail | 2014 |
| Count UP Business Ltd | Professional & scientific | 2019 |
| Crawford MAY & Co Limited | Real estate | 1998 |
| CRE8 Developments Ltd | Construction | 2023 |
| Creative Brand Agency Ltd | Wholesale & retail | 2023 |
| Crown Consolidated Limited | Administrative & support | 1995 |
| Crownlands Development Limited | Real estate | 2022 |
| Crystal Const Services Limited | Construction | 2018 |
| Curepharma Limited | Health & social care | 2021 |
| Curtain Mill Contract Furnishing Limited | Manufacturing | 2012 |
| Cygna.Tv Limited | Information & communication | 2011 |
| D & G Tanning Ltd | Other services | 2020 |
| Deal 2 Deal Ltd | Other services | 2017 |
| Dealcomp Limited | Information & communication | 1988 |
| DEN Switches Limited | Manufacturing | 2020 |
| Deniz Kitchen Ltd | Hospitality | 2019 |
| Dental Plan Direct Limited | Health & social care | 2002 |
| Dermaticare Ltd. | Health & social care | 2015 |
| Derose Healthcare Limited | Health & social care | 2020 |
| DEV Financial Associates Limited | Administrative & support | 2013 |
| Devreena Estates Ltd | Real estate | 2017 |
| DGR House Limited | Real estate | 2024 |
| Dhee Ltd | Information & communication | 2022 |
| Dhol Beats UK Ltd | Other services | 2024 |
| Diverse Perspectives Ltd | Other services | 2024 |
| Divya Chandegra Ltd | Professional & scientific | 2012 |
| DOC NY Ltd | Health & social care | 2024 |
| Domestar Limited | Wholesale & retail | 1998 |
| Dontaskquestions Ltd | Wholesale & retail | 2024 |
| DS Perio Limited | Health & social care | 2013 |
| Dudley Street Ltd | Real estate | 2010 |
| E.B.O.N. Property LLP | | 2026 |
| Elderlycare Limited | Health & social care | 2023 |
| Electris L.P. | | 2018 |
| Elite Specialist Care Limited | Health & social care | 2000 |
| Elixir BLU Ltd | Information & communication | 2019 |
| Emberic Limited | Information & communication | 2026 |
| Enaura Ventures Limited | Construction | 2023 |
| Endodontic Specialist Ltd | Health & social care | 2021 |
| Enigma Agency Ltd | Wholesale & retail | 2025 |
| EP Design Studio Ltd | Manufacturing | 2021 |
| Euro Trade Centre Limited | Professional & scientific | 2024 |
| European Bound Ltd | Administrative & support | 2012 |
| Everstar Realtors Ltd | Real estate | 2024 |
| Extra Food & Wine Limited | Hospitality | 2017 |
| Extrude and Revolve Studio Ltd | Information & communication | 2024 |
| Fantastic Corporate Services Ltd | Other services | 2013 |