| Co Holdings Ltd | London | 2018 |
| Co-Channel Electronics Limited | Bury | 1980 |
| Co-Dot Ltd | Harrogate | 2015 |
| Co-Ordinated Design and Build Limited | Rochester | 2021 |
| CO2 Commercial Limited | Derby | 2008 |
| CO2EZERO Limited | London | 2020 |
| CO2MOTION Ltd | London | 2020 |
| Coach 2 Coasters Ltd | Mildenhall | 2024 |
| Coach Berge Limited | London | 2023 |
| Coach Hall Limited | Coleraine | 2017 |
| Coach House Fish and Chips London Limited | London | 2021 |
| Coach House Mews Resident Company Limited | Mayfield | 2008 |
| Coach Self Storage Limited | Broadgate | 2020 |
| Coach Touring Limited | Nr Birmingham | 2007 |
| Coach Your Culture Ltd. | London | 2024 |
| Coachcraft Limited | Preston | 2012 |
| Coaching Climbing Ltd | Liverpool | 2012 |
| Coaching for Aspirations Limited | Tadworth | 2023 |
| Coaching Real Life Limited | Liss | 2024 |
| Coaching With Christianne Ltd | Derby | 2023 |
| Coachingcloud Limited | Bedford | 2011 |
| Coachli Technology Ltd | London | 2023 |
| Coachstop Holidays Ltd | Chelmsford | 2011 |
| Coachstop Ltd | Chelmsford | 2011 |
| Coactus Growth Solutions Limited | Egham | 2014 |
| Coagg Limited | Mitcham | 2008 |
| Coakley Properties Limited | Chesterfield | 2021 |
| Coal Exchange Freehold Ltd | Newmarket | 2022 |
| Coal Face Development Limited | Newcastle Upon Tyne | 2007 |
| Coalesco Ltd | Nottingham | 2012 |
| Coalfield Close Management Company Limited | Swindon | 2025 |
| Coalville Skip Hire Limited | Burton-On-Trent | 2015 |
| Coana Limited | Blackpool | 2026 |
| Coast & Country Cottages (Holdings) Limited | Altrincham | 2013 |
| Coast & Country Cottages (South West) Ltd | Altrincham | 2000 |
| Coast & Country Holidays Ltd | Altrincham | 2008 |
| Coast & Country SUB Limited | Faversham | 2020 |
| Coast and Country Laundry Ltd | Pickering | 2022 |
| Coast and County Group Ltd | Pickering | 2024 |
| Coast and County Property Management Group Ltd | Pickering | 2024 |
| Coast and County Radio FM Ltd | Scarborough | 2018 |
| Coast Bathrooms Limited | Kilwinning | 2023 |
| Coast Freehold Limited | Newquay | 2011 |
| Coast Lodge Pevensey Limited | Pevensey Bay | 2006 |
| Coast Management (N W) Limited | Stockton On Tees | 2009 |
| Coast Pizza Ltd | Cromer | 2018 |
| Coast Property Solutions Ltd | Romsey | 2016 |
| Coast Solutions Ltd | Romsey | 2016 |
| Coast SUA Ltd | Worthing | 2018 |
| Coast to Coast Communications Ltd | St Austell | 2013 |
| Coast View Cottages Management Limited | Bangor | 2003 |
| Coast Watersports Ltd | Axminster | 2013 |
| COAST2COAST Land Limited | Halesowen | 2015 |
| Coastal Car TEC Ltd | St. Leonards-On-Sea | 2021 |
| Coastal Cleaning Co. (Felixstowe) Limited | Ipswich | 2008 |
| Coastal Clear Water (Holdings) Limited | Belfast | 1999 |
| Coastal Concrete Ltd | Worthing | 2021 |
| Coastal Cornwall Limited | Bridgnorth | 2011 |
| Coastal Dispense Ltd | Shaftesbury | 2022 |
| Coastal Garden Buildings Limited | Lymington | 2018 |
| Coastal Health Care Limited | Blackpool | 2008 |
| Coastal Kids Edit Ltd | Loughborough | 2024 |
| Coastal Shipping Limited | London | 2003 |
| Coastal Watersports Limited | Worthing | 2014 |
| Coastal Way Limited | London | 2014 |
| Coastbrand Limited | Doncaster | 2012 |
| Coastline Caravans Limited | Newtownards | 1981 |
| Coastline Home Improvements IOW Limited | Eastleigh | 2018 |
| Coastline Scaffolding Ltd | Prestonpans | 2025 |
| Coaststrike Limited | Doncaster | 2012 |
| Coates Properties Limited | Colchester | 1983 |
| Coatglade Limited | York | 1969 |
| Coats and Hoes Limited | Lincoln | 2021 |
| Coats Investment & Development Ltd | Cheltenham | 2026 |
| Coats Shelfco (BDA) Limited | London | 1898 |
| Coats Shelfco (CV Nominees) Limited | London | 1963 |
| Coats Shelfco (SFD) Limited | Uxbridge | 1956 |
| Coats Shelfco (SSG) Limited | Uxbridge | 1928 |
| Coats Shelfco (VV) Limited | London | 1950 |
| COB World Limited | London | 2021 |
| Coba Plastics Limited | Leicester | 2018 |
| Cobac Holdings Two Limited | Salford | 2010 |
| Cobalt 13A Management Limited | Warrington | 2009 |
| Cobalt Hollow Trading Partners Ltd | Manchester | 2026 |
| Cobalt Peak Creative Ltd | Doncaster | 2025 |
| Cobalt Productions Limited | Poole, Dorset | 2020 |
| Cobalt Ridge Support Services Ltd | Manchester | 2026 |
| Cobanford Limited | Kingston Upon Thames | 2015 |
| Cobanshield Limited | Kingston Upon Thames | 2015 |
| Cobb Company Holdings Limited | London | 2023 |
| Cobbold 1952 Limited | Eastbourne | 2013 |
| Cobbroxpizza Limited | Rowlands Gill | 2021 |
| Cobden Street 1969 Limited | Stoke-On-Trent | 2015 |
| Cobdes Ltd | Northampton | 2021 |
| Cobell Limited | Newton Abbot | 2023 |
| Cobie Vetcare Limited | Hailsham | 2015 |
| Cobit Foundation Ltd | Cambridge | 2025 |
| Coble Quays Management Ltd | Amble | 2015 |
| Coble Ventures Limited | Morpeth | 2013 |
| Cobra Associates Investment Limited | London | 2014 |