| CEI 8 UK Holdings Limited | Warrington | 2019 |
| CEI 8 UK Ltd | Warrington | 2019 |
| CEI 9 UK Limited | Warrington | 2020 |
| CEI Bont Limited | Ascot | 2017 |
| CEI Clwyd Limited | Warrington | 2022 |
| CEI Electrical Services Holdings Ltd | Southampton | 2025 |
| CEI Keane JV Limited | Warrington | 2019 |
| CEI Keane Limited | Warrington | 2020 |
| CEI Participations Ltd | Taunton | 2018 |
| CEI Saddle JV Limited | Warrington | 2022 |
| CEI Saddle Limited | Warrington | 2022 |
| CEI WPP Holdings Limited | Warrington | 2023 |
| CEI WPP Limited | Warrington | 2023 |
| Ceiba Healthcare Ltd | London | 2020 |
| Ceilite Holdings Limited | Stansted | 2012 |
| Ceimic Bidco Limited | Nottingham | 2023 |
| Ceimic Topco Limited | Nottingham | 2023 |
| Ceinfryn Holdings Ltd | Lymington | 2026 |
| Ceiss Ltd | London | 2024 |
| CEJ Financial Consulting Limited | Norwich | 2018 |
| CEJ Holding Limited | Maidstone | 2025 |
| Cejam 73 Limited | Harleston | 2020 |
| Cekat Holdings Ltd | Haslingden | 2024 |
| Ceken Property Limited | London | 2025 |
| Cekic Holding Limited | Richmond | 2021 |
| CEL Group (Holdings) Limited | Lichfield | 2018 |
| CEL Group UK Holdings Limited | Lichfield | 2022 |
| CEL Holdings Limited | Aberdeen | 2022 |
| CEL Investments Ltd | Sheffield | 2024 |
| CEL Properties Limited | Preston | 2022 |
| CEL Sheet Metal (Holdings) Limited | Consett | 2022 |
| CEL Trading (Kent) Ltd | East Malling | 2011 |
| Celaj Holding Ltd | London | 2025 |
| Celandine Capital UK Ltd | London | 2010 |
| Celandine Limited | Usk | 2004 |
| Celanese Canada Holdings Limited | Derby | 2020 |
| Celanese Emulsions Pension Plan Trustees Limited | Derby | 2004 |
| Celbol Enterprise Limited | Carshalton | 2016 |
| Celd Holdings Limited | Harrogate | 2015 |
| Celebration Homestead Limited | Enfield | 2017 |
| Celebrity World Trips Ltd | London | 2016 |
| Celebrus Risk Limited | Colchester | 2018 |
| Celentano Group Ltd | Cambridge | 2013 |
| Celer Capital Limited | London | 2018 |
| Celer Capital Security Agent Limited | London | 2022 |
| Celerafi Holdings Limited | London | 2026 |
| Celerafi Limited | London | 2026 |
| Celerant UK Holdco Limited | Staines-Upon-Thames | 2024 |
| Celerboss Limited | Dartford | 2022 |
| Celeritatem Limited | Ballyclare | 2024 |
| Celerity Systems Limited | Richmond | 2010 |
| Celerity Topco Limited | Manchester | 2021 |
| Celeros Flow Technology UK Limited | Salford | 2020 |
| Celestar Limited | East Grinstead | 2022 |
| Celestia Capital Partners Limited | Malvern | 2025 |
| Celestial Assets Ltd | Scarborough | 2023 |
| Celestial Empire Ltd | Dartford | 2022 |
| Celestial Four Ltd. | London | 2025 |
| Celestial Holdings Ltd | Kettering | 2023 |
| Celestial Mortgages Limited | Pinner | 2026 |
| Celestial Property Ltd | London | 2020 |
| Celestialis Trading Company Limited | London | 2021 |
| Celestra Holdings Limited | Milton Keynes | 2022 |
| Celestra Wealth Limited | Bridgend | 2025 |
| Celia Adonis Holdings Ltd | London | 2024 |
| Celia Group Holdings Ltd | Portsmouth | 2024 |
| Celia Mason Wealth Management Ltd | Woodbridge | 2015 |
| Celis Group Holding Ltd | London | 2020 |
| Cell Capital Limited | London | 2022 |
| Cell Capital Partners Nominee Limited | London | 2018 |
| Cell Topco Limited | London | 2026 |
| Cell:Gibb Limited | Cheshire | 2023 |
| Cella Global Limited | Hitchin | 2026 |
| Cella Spain Holdco Limited | London | 2021 |
| Cellar Drinks Holdings Limited | Crickhowell | 2025 |
| Cellardyke Holdings Limited | London | 2025 |
| Cellarhead Green NG Limited | Cheltenham | 2022 |
| Cellarmaster Wines Holdings (UK) Limited | Twickenham | 1968 |
| Cellborn Ltd | London | 2001 |
| Cellcarta UK Limited | Guildford | 2019 |
| Cellecor Gadgets Europe Limited | Harrow | 2026 |
| Celli International Limited | Thirsk | 2013 |
| Cellier Holdings Ltd | Thirsk | 2021 |
| Cellini Capital Limited | Cambridge | 2019 |
| Cellini Holdings Limited | | 2007 |
| Cello Base Capital Limited | London | 2023 |
| Cello Health Group Limited | London | 1998 |
| Celloglas Holdings Limited | Reading | 2024 |
| Cellpak PLC | Epping | 2013 |
| Cellpay Holdings Ltd | London | 2025 |
| Celltech Battery Holdings Limited | St. Helens | 2019 |
| Celltech Pension Trustees Limited | Berkshire | 1993 |
| Celltex Holdings Limited | Wednesbury | 2015 |
| Celltone Communications Limited | London | 2014 |
| Cellula 1 Communications Limited | Leicestershire | 2000 |
| Cellular Agriculture Holdings Limited | Llanelli | 2025 |
| Cellular Agriculture IP Limited | Llanelli | 2025 |
| Cellular Agriculture Parent Limited | Llanelli | 2025 |
| Cellular Communications Limited | Leeds | 2000 |
| Celmec Limited | Moy | 2019 |