| Celnor Environmental Compliance Limited | Manchester | 2024 |
| Celnor Environmental Risk Solutions Limited | Manchester | 2025 |
| Celnor Finco Limited | Manchester | 2023 |
| Celnor Group Limited | Manchester | 2023 |
| Celnor Midco Limited | Manchester | 2023 |
| Celnor Topco Limited | Manchester | 2023 |
| Celoc Investments Ltd | Exeter | 2025 |
| Celosia Investments GB Ltd | Harrow | 2023 |
| Celox Capital Limited | Manchester | 2018 |
| Cels Lights & Decor Limited | Doncaster | 2019 |
| Celshan Ltd | Craigavon | 2022 |
| Celsino Limited | London | 2025 |
| Celsius (Group) Limited | Knutsford | 2014 |
| Celsius Capital Ltd | Heywood | 2014 |
| Celsius Design Holdings Limited | Leamington Spa | 2015 |
| Celsius Investments (Newco) Limited | Tamworth | 2024 |
| Celsius Network Limited | London | 2018 |
| Celsius RE Limited | London | 2023 |
| Celt Bidco Limited | Nottingham | 2022 |
| Celt Holdings Ltd | Sandbach | 2025 |
| Celta Holding Ltd | Peterborough | 2026 |
| Celtara Ltd | Cardiff | 2025 |
| Celtic Business Holdings Limited | Mold | 2025 |
| Celtic Business Property Holdings Limited | Mold | 2026 |
| Celtic Capital Solutions Ltd | London | 2023 |
| Celtic Coast Ltd | Bury St Edmunds | 2024 |
| Celtic Cribbs Ltd | Calne | 2024 |
| Celtic Finance Ltd | Cardiff | 2021 |
| Celtic Financial Planning Ltd | Mold | 2018 |
| Celtic Financial Services Limited | Swansea | 2001 |
| Celtic Group Scotland Limited | Aberdeen | 2026 |
| Celtic House Holdings Limited | Cardigan | 2026 |
| Celtic House Investment Partners Limited | Newport | 1994 |
| Celtic Industrial Fasteners Holdings Limited | Port Talbot | 2025 |
| Celtic Insurance Brokers Limited | Glasgow | 1997 |
| Celtic Investments Limited | Cardiff | 2005 |
| Celtic Island Limited | Reading | 2024 |
| Celtic Mandates Limited | London | 2024 |
| Celtic Sea Holdings Limited | London | 2025 |
| Celtic Shores Investments Ltd | Plymouth | 2018 |
| Celtic Utilities Group Limited | Cardiff | 2013 |
| Celtic Wealth Management and Financial Planning Limited | Swansea | 2013 |
| Celtis Holdings Limited | Edinburgh | 2025 |
| Celtrade Corporate Holdings Limited | Leicester | 2022 |
| Celty Limited | Brighton | 2026 |
| CEM Financial Solutions Limited | Huddersfield | 2023 |
| Cemat (Holdings) Ltd | Gillingham | 2025 |
| Cemedhub Limited | Eastbourne | 2021 |
| Cemex UK | Coventry | 2004 |
| Ceminvest Limited | Leeds | 2019 |
| Cempa Capital 2 Limited | Altrincham | 2023 |
| Cempa Capital Limited | Altrincham | 2023 |
| Cempump (Holdings) Ltd | Ripley | 2020 |
| CEN Consult Limited | Malvern | 2024 |
| CEN Group Holdings Limited | London | 2023 |
| CEN Holdco Limited | Manchester | 2023 |
| CEN Holdings Limited | Stourbridge | 2021 |
| Cena Group Holdings Ltd | Nottingham | 2026 |
| Cena Holdings Ltd | Isleworth | 2023 |
| Cenator Limited | Edgware | 2006 |
| Cencias Ltd | Dereham | 2025 |
| Cencora Global Consulting Services UK Holding Limited | London | 2015 |
| Cencora International Holdings Limited | Woking | 2021 |
| Cendaire Ltd | London | 2026 |
| Cenegex Limited | Scarborough | 2021 |
| Cengp Limited | Kingston Upon Thames | 2024 |
| Cenkos Fund Management Limited | London | 2007 |
| Cenkos Nominee UK Limited | London | 2005 |
| Cenkos Securities (Trustees) Limited | London | 2006 |
| Cennen Wealth Asset Management Ltd | Ammanford | 2023 |
| Cennox Holdings Limited | Camberley | 2014 |
| Ceno Holdings Limited | Southampton | 2020 |
| Cenos Group Limited | Huntingdon | 2026 |
| Cenos Holdco Ltd | Edinburgh | 2021 |
| Cenotaph Holdings Limited | London | 2023 |
| Cenotian (UK) Limited | London | 2026 |
| Cens Investments Limited | London | 2022 |
| Censeo Limited | Wolverhampton | 2007 |
| Censeo Property Group Ltd | Ware | 2024 |
| Censol Group Holdings Limited | Quorn | 2021 |
| Census Holdings Limited | Sheffield | 2006 |
| Census Wealth Management Limited | Sutton Coldfield | 2010 |
| Cent Holdings Limited | London | 2019 |
| Centa Payments Limited | London | 2024 |
| Centamin Egypt Investments 1 Limited | London | 2021 |
| Centamin Egypt Investments 2 Limited | London | 2021 |
| Centamin Egypt Investments 3 Limited | London | 2021 |
| Centamin Group UK Services Limited | London | 2020 |
| Centari Holdings Limited | Derby | 2025 |
| Centaur Affinity Limited | Worthing | 2025 |
| Centaur Capital Advisory Limited | London | 2026 |
| Centaur Consulting Services Ltd | Harrow | 2020 |
| Centaur Financial Services Limited | Dorset | 1987 |
| Centaur Financing Ltd | Bromley | 2015 |
| Centaur Group Limited | Dartford | 2017 |
| Centaur III Limited | London | 2021 |
| Centaur Risk Solutions Limited | Worthing | 2025 |
| Centaur Venture Capital Group Ltd | Cambridge | 2020 |
| Centauros Limited | London | 2021 |
| Centaurus Collection Ltd | Derby | 2022 |