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| CDS Software Solutions Limited | Fleet | 2001 |
| Cdsj Products Ltd | St. Albans | 2021 |
| CDT Dental Laboratory Ltd | Bradford | 2016 |
| CDT Fabrication Ltd | Church Stretton | 2019 |
| CDT Marine (Europe) Limited | Southport | 2025 |
| CDT Marine Ltd | Dartmouth | 2018 |
| Cdvi Ltd | High Wycombe | 1999 |
| CDW Systems Limited | Cheltenham | 2009 |
| CDW Trade Supplies Ltd | Cheltenham | 2025 |
| Cdx.Dental LAB Limited | Wembley | 2026 |
| CE Electrical Limited | Liverpool | 2021 |
| CE Manufacturing Limited | Bridgend | 2025 |
| CE Marking Handmade Toys Limited | Gosport | 2015 |
| CE Metal Fabrications Limited | Bodmin | 2018 |
| CE Piping Solutions Ltd | Falkirk | 2025 |
| CE Print Ltd | Bristol | 2014 |
| CE Technical Ltd | Dalry | 2023 |
| CE Technical Solutions Limited | Wrexham | 2018 |
| CE Tyres Ltd | Crewe | 2025 |
| CE ZEE Ltd | London | 2014 |
| Ce&L Limited | Beverley | 2014 |
| Ce(Uk) Limited | London | 2016 |
| Ce-Air UK Limited | Hyde | 2006 |
| CE3D Limited | London | 2022 |
| CEA Global Ventures Ltd | Stevenage | 2023 |
| Ceaf Process Pipework Ltd | Manchester | 2012 |
| Ceag Limited | Barnsley | 1981 |
| Ceai House Ltd | Feltham | 2026 |
| Ceal Holdings International Limited | London | 2020 |
| Ceamd Limited | London | 2008 |
| Ceandess (Wolverhampton) Limited | Wolverhampton | 2009 |
| Ceapach Ltd | Cambridge | 2025 |
| Ceased Trading 05994116 Ltd | London | 2006 |
| Ceased Trading 11785467 Ltd | London | 2019 |
| Ceason Food Co Ltd | Alresford | 2026 |
| Ceat International UK Limited | London | 2026 |
| Cebil Ltd | Canterbury | 2019 |
| Cebotec Limited | Falkirk | 2003 |
| CEC Electrical and Building Maintenance Contractors Limited | Plymouth | 2012 |
| CEC Refining Limited | Leigh On Sea | 2019 |
| Cecchetti 23 Ltd | Cambridge | 2023 |
| Cece Jewellery Limited | Leeds | 2022 |
| Cece's Everything Syrups Ltd | Plymouth | 2025 |
| Cecii Health Limited | London | 2023 |
| Cecil a. Haffey & SON Limited | Portadown | 2007 |
| Cecile Van Dijk Ltd | Muswell Hill | 2011 |
| Cecilia Stewart Creative Ltd | Watford | 2018 |
| Cecilia's Design Limited | Chelmsford | 2017 |
| Ceco Stone Ltd | Church Stretton | 2019 |
| CED Fabrications Limited | Accrington | 1991 |
| Ced's Bagels Ltd | Helston | 2020 |
| Cedar Audio Limited | Cambridge | 1993 |
| Cedar Catering Services Limited | London | 2011 |
| Cedar Design Studio Ltd | Kingswinford | 2020 |
| Cedar Doors Ltd | Alfreton | 2002 |
| Cedar Green Projects Ltd | Hassocks | 2010 |
| Cedar Groove Ltd | Corby | 2024 |
| Cedar Labels Limited | Hyde | 2009 |
| Cedar Packaging Drinks Limited | Romsey | 2019 |
| Cedar Packaging Limited | Romsey | 2012 |
| Cedar Planters Ltd | London | 2023 |
| Cedar Press (Southern) Limited | Romsey | 1974 |
| Cedar Press Limited | Leicester | 2016 |
| Cedar Rose Fashion Ltd | Wakefield | 2024 |
| Cedar Studios Ltd | Farnham | 2019 |
| Cedar Tree Brewing Company Ltd | Abergavenny | 2020 |
| Cedarbrooke Ltd. | Norfolk | 2007 |
| Cedargrove Materials Limited | Stourbridge | 1998 |
| Cedarlodge Products Ltd | Marlow | 2017 |
| Cedaroaks Strategic Holdings Ltd | London | 2026 |
| Cedarscape Limited | Derby | 2010 |
| Cedartek Limited | Southend-On-Sea | 2014 |
| Cedarwood Carpentry Ltd | Bournemouth | 2019 |
| Cedarwood Spas Limited | Kendal | 2020 |
| Cedecast Ltd | London | 2014 |
| Cedesa Limited | Letchworth | 1988 |
| Cedo Holdings Limited | Telford | 2009 |
| Cedo Limited | Telford | 1968 |
| Cedyr Labs Limited | Ancoats | 2021 |
| CEE DEE Engineering Ltd | Hull | 1998 |
| Ceebeejay Limited | London | 2024 |
| Ceed Ltd | London | 2014 |
| Ceed Print Ltd | Chelmsford | 2021 |
| Ceedix Engineering Ltd. | Fraserburgh | 2009 |
| Ceegees Couture Ltd | Surrey | 2024 |
| Ceejay Design Limited | | 2005 |
| Ceejay Maintenance Limited | | 2000 |
| Ceejay UK Limited | York | 2002 |
| Ceema Technology Limited | Biggleswade | 1979 |
| Ceenwood Ltd | Belfast | 2021 |
| Ceep Beauty Ltd | Romford | 2020 |
| Ceep Connectors Limited | Liss | 2012 |
| Ceepuk.Com Ltd | Hull | 2023 |
| Ceeq Design Ltd | Basingstoke | 2020 |
| Ceetak Limited | Bedford | 1988 |
| Ceetek Chemicals Limited | Shrewsbury | 1998 |
| Ceewrite Engineering Ltd | West Wickham | 2016 |
| Ceez Records Ltd | London | 2025 |
| CEF Group (UK) Limited | London | 2023 |