| Cerberus Ltd | Middlesbrough | 2025 |
| Cerberus Minerals Limited | Cockermouth | 2015 |
| Cerberus MN Limited | London | 2005 |
| Cerberus SP Limited | London | 2005 |
| Cereal Killers Limited | Kettering | 2017 |
| Ceres 2 Limited | Colchester | 2015 |
| Ceress Foods Limited | Alton | 2025 |
| Ceri Charles Davies Ltd | Neath | 2024 |
| Ceri Golding Solutions Limited | Sa1 Swansea Waterfront | 2015 |
| Cerilly Limited | London | 2024 |
| Cerin Ltd | Bolton | 2005 |
| Cerisport Limited | Milton Keynes | 2021 |
| Cerit Yachting Ltd | London | 2025 |
| Cernucci Limited | Manchester | 2020 |
| Cerro Precision Limited | Birmingham | 1998 |
| Cert Record 59 Ltd | London, Southgate | 2025 |
| Certagent Ltd. | London | 1998 |
| Certain Sight Limited | Sittingbourne | 2002 |
| Certas Energy (Channel Islands) Limited | Birchwood | 2011 |
| Certas Energy (Isle of MAN) Limited | Birchwood | 2007 |
| Certas Energy Limited | Birchwood | 2008 |
| Certas Energy Retail Limited | Birchwood | 2007 |
| Certec Limited | Great Harwood | 1994 |
| Certech International Limited | Windsor | 1985 |
| Certel Overseas S.A. Ltd. | London | 2016 |
| Certex (UK) Limited | Doncaster | 1968 |
| Certico Limited | Bury | 2020 |
| CERTIFIC8 Limited | Newbury | 2005 |
| Certified Forensic Accountants Ltd | Cardiff | 2020 |
| Certified French Translator UK Limited | Northwich | 2024 |
| Certified GAS Engineering Ltd | Southall | 2023 |
| Certified Locksmiths Limited | London | 2023 |
| Certifire Limited | London | 1980 |
| Certio Ltd | Hamilton | 2024 |
| Certivue Limited | Pwllheli | 2008 |
| Certora U.K. Limited | Chesterfield | 2024 |
| Certra Limited | Kendal | 2001 |
| Certsys Ltd | Kent | 2004 |
| Certta Limited | Manchester | 2014 |
| Certus Agriventure Limited | Saundersfoot | 2023 |
| Cervco Limited | Bury | 2020 |
| Cerveau Limited | Bury | 2020 |
| Cervus Elaphus Ltd | Llandrindod Wells | 2009 |
| CES 101 Limited | Winchester | 2012 |
| CES One Ltd | London | 2018 |
| CES Recruitment Limited | Newbury | 2020 |
| CES Two Ltd | London | 2018 |
| CET Properties Ltd | Lisburn | 2019 |
| Cetalis Ltd | Marlow | 2023 |
| Cetec Limited | Hinckley Leicestershire | 1985 |
| Cetech Solutions Limited | Plymouth | 2009 |
| Cevc Ltd | Tring | 2024 |
| Ceve Limited | London | 2022 |
| Cevik Distrubisjon & Selg Limited | London | 2022 |
| Cevim Invest Ltd | Dover | 2015 |
| Cevo London Ltd | Bromley | 2026 |
| Ceyco Industrial Ltd | London | 2014 |
| Ceyda Ltd | London | 2020 |
| Ceylon Developments Ltd | London | 2015 |
| Ceylon Gems & Jewels Ltd | Hornchurch | 2003 |
| Cezar Marine Limited | London | 2015 |
| CF (2015) Ltd | Manchester | 2015 |
| CF Distribution UK Limited | West Malling | 1991 |
| CF Trusteeship | Stroud | 2010 |
| CFB Associates Ltd | London | 2016 |
| Cfdapps Ltd | Chester | 2020 |
| Cfdc (2014) Ltd | Blackburn | 2014 |
| CFE Elecrical Ltd | Cheadle | 2024 |
| CFH Services Limited | Radstock | 1981 |
| CFI Limited | London | 2021 |
| CFM Property Ltd | Norwich | 2025 |
| CFO Carbon Limited | Lytham St Annes | 2025 |
| Cfom Ltd | Croydon | 2022 |
| CFR Construction Group Limited | Ely | 2026 |
| CFR Contracts Limited | Ely | 2019 |
| CFR Roofing Limited | Ely | 2026 |
| CFR Sales & Distribution Limited | Ashbourne | 2012 |
| CFS Enfield Limited | Potters Bar | 2011 |
| CFS Test 12321311 TR Ltd | Doncaster | 2022 |
| CFT Management Ltd | Edinburgh | 2011 |
| CG (Erdington) Management Company Limited | London | 2009 |
| CG Enterprises (N.I) Ltd | Belfast | 2020 |
| CG Fitness Enterprises Ltd | Belfast | 2020 |
| CG Limited | Newmarket | 2008 |
| CG Secretarial Limited | Wakefield | 2006 |
| Cgam Employee Trustee Limited | London | 2018 |
| CGB Ltd | Halesowen | 2023 |
| CGD 1 (UK) Limited | London | 2026 |
| CGD 2 (UK) Limited | London | 2026 |
| Cgehive Ltd | New Malden | 2025 |
| CGF Products Limited | Newcastle Upon Tyne | 2004 |
| CGI Insurance Services Limited | High Wycombe | 2025 |
| CGM Limited | Towcester | 2021 |
| Cgnu Direct Limited | High Wycombe | 2000 |
| CGP (Hydro) Limited | Kingsbridge | 2014 |
| CGR Limited | Hereford | 2009 |
| Cgreggpubs Ltd | Rotherham | 2024 |
| CGS Commercial Sales Limited | Wigan | 2021 |
| CGT Property Investment Limited | London | 2016 |
| CH (UK) Management Limited | Manchester | 2016 |