| Codemonkey Ltd | Information & communication | 2014 |
| Codemora Tech Ltd | Information & communication | 2025 |
| Codesdreams Ltd | Information & communication | 2025 |
| Codesk Ltd | Information & communication | 2023 |
| Codestack-Ai Limited | Information & communication | 2025 |
| Codethink Limited | Information & communication | 2007 |
| Codeva Limited | Information & communication | 2025 |
| Codex Commerce Ltd | Wholesale & retail | 2021 |
| Codford & Co. Ltd | Wholesale & retail | 2021 |
| Codi Sheldon Limited | Hospitality | 2022 |
| Codimi Limited | Professional & scientific | 2019 |
| Codingpeeps Ltd | Information & communication | 2025 |
| Codladh Limited | Health & social care | 2017 |
| Codub Consulting Limited | Information & communication | 2004 |
| Codus IT Limited | Information & communication | 2010 |
| Coeg's Limited | Real estate | 2025 |
| Coekse Ltd | Extraterritorial | 2022 |
| Coeliac Safe Ltd | Health & social care | 2022 |
| Coeur Rhythmus Limited | Health & social care | 2024 |
| COF Divine Limited | Financial services | 2020 |
| Cofathec Heatsave Limited | Extraterritorial | 1978 |
| Coffee & Snacks Longsight Ltd | Wholesale & retail | 2021 |
| Coffee @ Alisons Limited | Extraterritorial | 2025 |
| Coffee Afrique Limited | Extraterritorial | 2025 |
| Coffee by the Corner Ltd | Hospitality | 2025 |
| Coffee Fortuna Limited | Real estate | 2021 |
| Coffee LAB 489 Ltd | Hospitality | 2024 |
| Coffee LAB Franchise Products UK Limited | Wholesale & retail | 2025 |
| Coffee LAB Franchise UK Limited | Administrative & support | 2025 |
| Coffee LAB Piccadilly Gardens MCR Limited | Hospitality | 2023 |
| Coffee LAB Rockmount Drive Thru Limited | Hospitality | 2023 |
| Coffee LAB Rockmount Ltd | Hospitality | 2022 |
| Coffee Lounge Ltd | Hospitality | 2025 |
| Coffee Lounge Wigan Limited | Hospitality | 2025 |
| Coffee One MCR Limited | Hospitality | 2025 |
| Coffee Rules 102 Limited | Hospitality | 2025 |
| Coffee Rules 105 Limited | Hospitality | 2025 |
| Coffee Rules 106 Ltd | Hospitality | 2025 |
| Coffee Rules 88 Ltd | Hospitality | 2026 |
| Coffee Rules A19 Ltd | Hospitality | 2025 |
| Coffee Shack (NW) Ltd | Hospitality | 2020 |
| Coffee Taxi & Courier Ltd. | Transport & logistics | 2022 |
| Coffee@Theboatyard LLP | | 2026 |
| Cogdien Ltd | Wholesale & retail | 2025 |
| Cogent Boost Ltd | Other services | 2024 |
| Cogent Business Development Ltd. | Administrative & support | 2015 |
| Cogent Education Ltd | Administrative & support | 2017 |
| Cogent Energy Ltd | Construction | 2023 |
| Cogent Resourcing Limited | Administrative & support | 2017 |
| Cogna NOW Ltd | Information & communication | 2025 |
| Cognava Ltd | Wholesale & retail | 2025 |
| Cognax Solutions Limited | Information & communication | 2017 |
| Cogniere Ltd | Information & communication | 2026 |
| Cognimia Tech Ltd | Wholesale & retail | 2025 |
| Cogniso Limited | Information & communication | 2013 |
| Cognitio Trading Limited | Professional & scientific | 2016 |
| Cognitiome Ltd | Wholesale & retail | 2021 |
| Cognition Accountancy Limited | Professional & scientific | 2016 |
| Cognition Human Resources and Financial Solutions Limited | Professional & scientific | 2012 |
| Cognitive Clarity Ltd | Health & social care | 2025 |
| Cognitive Collective Limited | Information & communication | 2024 |
| Cognitive Lode Ltd | Education | 2016 |
| Cognitive Scout Ltd | Financial services | 2025 |
| Cognitive Therapy Training & Consultancy Ltd | Health & social care | 2006 |
| Cognizant Tech Solutions Limited | Information & communication | 2025 |
| Cognoscenti Solutions Limited | Information & communication | 1994 |
| Cognoviq Ltd | Information & communication | 2025 |
| COH Commercial Limited | Financial services | 2019 |
| COH Holdings Limited | Financial services | 2020 |
| Cohab Properties Ltd | Real estate | 2021 |
| Cohandler Ltd | Information & communication | 2026 |
| Coharvester Ministry | Education | 2024 |
| Cohe Travel Ltd | Transport & logistics | 2025 |
| Cohen Advisory Ltd | Professional & scientific | 2021 |
| Cohen BOR Services Ltd | Professional & scientific | 2020 |
| Cohenblvck Ltd | Wholesale & retail | 2025 |
| Cohens Furniture Auctions Limited | Wholesale & retail | 2003 |
| Cohesion Legal Services Centre Ltd | Professional & scientific | 2007 |
| Cohillson Estates Limited | Real estate | 2017 |
| Cohillson Limited | Manufacturing | 2012 |
| Cohiring Ltd | Administrative & support | 2024 |
| Cohraf Limited | Financial services | 2022 |
| Coigach Community C.I.C. | Energy | 2015 |
| Coil Springs (1989) Limited | Manufacturing | 1989 |
| Coilcolor Limited | Manufacturing | 1992 |
| Coin Investment Ltd | Real estate | 2021 |
| Coin Solutions Limited | Manufacturing | 1999 |
| Coinsight Ltd | Information & communication | 2021 |
| Coiolo Ltd | Information & communication | 2021 |
| Coke Finance Ltd | Financial services | 2024 |
| Coke Properties Ltd | Real estate | 2016 |
| Colab Agencies Limited | Wholesale & retail | 2014 |
| Colab Brands Ltd | Extraterritorial | 2024 |
| Colada Clothing Ltd | Wholesale & retail | 2024 |
| Colbert Watch Limited | Wholesale & retail | 2020 |
| Colbridge Property Management Ltd | Real estate | 2019 |
| Colby Management Solutions Limited | Administrative & support | 2017 |
| Colbyco Leisure Ltd | Hospitality | 2023 |
| Cold Applied Roofing Solutions Ltd | Construction | 2020 |
| Cold Beam Games Limited | Information & communication | 2009 |