| Canipure Ltd | West Calder | 2023 |
| Canireta Limited | Musselburgh | 2023 |
| Canis Automotive Labs Ltd | Shanklin | 2016 |
| Canis Engineering Ltd | Grimsby | 2015 |
| Canis Pet Nutrition Ltd | London | 2025 |
| Canisapien Ltd | Redcar | 2023 |
| Caniscent Limited | Newquay | 2025 |
| Canistac Ltd | London | 2023 |
| Canlin Castings Limited | Nottingham | 1958 |
| Canlines Limited | Merseyside | 1991 |
| Canmore Pipe Bags Limited | Whitburn | 2009 |
| Cann Mills Limited | Shaftesbury | 2003 |
| Canna Cafe Ltd | Lichfield | 2009 |
| Canna Grow Biosciences Limited | Southampton | 2018 |
| Canna Holdings Ltd | Nottingham | 2003 |
| Canna Magic Limited | Nottingham | 2019 |
| Cannabidiol Extraction CYF | Bagillt | 2016 |
| Cannabrew Ltd | Cardiff | 2019 |
| Cannalive Emea Ltd | Mildenhall | 2017 |
| Cannapharma Ltd | Rowlands Gill | 2024 |
| Canncrest Drinks Limited | London | 2019 |
| Canne Collective Ltd | Eastbourne | 2026 |
| Canned Drawn and Quartered Ltd | Stockport | 2021 |
| Canned EAT Limited | Badminton | 2019 |
| Cannedessence Limited | Swindon | 2018 |
| Cannella Machinery Group Limited | Tunbridge Wells | 2020 |
| Cannex Limited | Barnsley | 2016 |
| Cannextract Ltd | Southport | 2018 |
| Canning Conveyor Co. Limited | Sandy Lane, Worksop | 1965 |
| Canning Engineering Ltd | Carrickfergus | 2021 |
| Canning Generator Solutions Ltd | Widnes | 2017 |
| Canning International Limited | Leicester | 2016 |
| Cannings Hydro Resources Ltd | Fort William, Scotland | 2020 |
| Canninstall Limited | Nottingham | 2011 |
| Cannock Gates Limited | Cannock | 2007 |
| Cannock Mobile Welding Limited | Walsall | 2002 |
| Cannock Technical Services Ltd | Cannock | 2008 |
| Cannoli GET Better Limited | Glasgow | 2021 |
| Cannon Cases Ltd | Totnes | 2015 |
| Cannon Coach and BUS Limited | Strabane | 2016 |
| Cannon Coach Ltd | Strabane | 2024 |
| Cannon Coffee Ltd | Guildford | 2020 |
| Cannon Domestic Appliances Limited | Blythe Bridge | 1952 |
| Cannon Electrical and Data Limited | Bury St. Edmunds | 2011 |
| Cannon Electronics & Automation Limited | Harlow | 1960 |
| Cannon Engineering (Yorkshire) Limited | Bradford | 2004 |
| Cannon Engineering Company Limited | London | 1959 |
| Cannon Health Ltd | Glasgow | 2021 |
| Cannon Packing and Fulfilment Limited | Abingdon | 2008 |
| Cannon Steelstock Limited | London | 2025 |
| Cannon Technologies Europe Ltd | New Milton | 1993 |
| Cannon Technologies Limited | New Milton | 1978 |
| Cannon Viking Limited | Stretford | 1983 |
| Cannonball Coffee Company Ltd | Winterborne Kingston | 2019 |
| Cannoncraft Limited | Derby | 1999 |
| Cannons Print and Design Ltd | Tonbridge | 2012 |
| CANNUL8 Ltd | Loughton | 2020 |
| Cannulight Technology Limited | London | 2023 |
| Cannusafe Ltd | Nottingham | 2025 |
| Canny Goat Limited | Wallsend | 2019 |
| Canny Robots Limited | London | 2016 |
| Canny Snacks Ltd | Knighton | 2026 |
| Canolfan Cyfrifiadurol Datrys Computer Centre Ltd | Cardiff | 1988 |
| Canon Europe Limited | Uxbridge | 2000 |
| Canon Medical Systems Limited | Crawley | 1970 |
| Canonbury Interiors Limited | Inverness | 2002 |
| Canons Group Limited | London | 2022 |
| Canopies & Shelters Ltd | St. Helens | 2023 |
| Canopies UK Limited | Lancashire | 1990 |
| Canoports UK Limited | Rochester | 2013 |
| Canopy Beer Company Ltd | Kingston Upon Thames | 2014 |
| Canopy Ltd | London | 2025 |
| Canopy Products Ltd | Bacup | 2002 |
| Canopy UK Direct Limited | Peterborough | 2015 |
| Canopy Ventilations Ltd | Birmingham | 2022 |
| Canopygods Ltd | Farnham | 2022 |
| Canos Ltd | Oxford | 2026 |
| Canova Clay Limited | Sheffield | 2024 |
| Canova Home and Fragrance Limited | Bromsgrove | 2005 |
| Canox Ltd | Bristol | 2018 |
| Canpack UK Limited | Scunthorpe | 2007 |
| Canprint Limited | Swansea | 2011 |
| Cansu Merdamert Design Studio Ltd | London | 2019 |
| Canswer Biosolutions Limited | Aberdeen | 2025 |
| Cantab Analytics Ltd | Stanmore | 2025 |
| Cantab Solutions Limited | 320 Cambridge Science Park, Cambrid | 2015 |
| Cantata Technology Ltd | Brighton | 2011 |
| Cantech Solutions Ltd. | Ringwood | 2003 |
| Canteen Smithy & Engineering Co. Limited | Riversway Preston | 1997 |
| Cantelo Lighting Ltd | Yeovil | 2021 |
| Canter Construction Ltd | Sudbury | 2024 |
| Canterbrew Ltd | Canterbury | 2010 |
| Canterbury Canvas Ltd | Ramsgate | 2016 |
| Canterbury Cider Limited | Ashford | 2020 |
| Canterbury Distillers Limited | Canterbury | 2020 |
| Canterbury ELM Tree Ltd | New Malden | 2020 |
| Canterbury Games Studio Limited | London | 2017 |
| Canterbury Kitchen's Ltd | Canterbury | 2024 |
| Canterbury of New Zealand Limited | London | 2009 |
| Canterbury Sheet Metal Limited | Canterbury | 1994 |