| Candish Court Ltd | London | 2022 |
| Candlelight 747 Healthcare Ltd | Newcastle Upon Tyne | 2021 |
| Candlish Limited | Witney | 2013 |
| Candm Compassionate Care Ltd | Liverpool | 2025 |
| Cando Care Co-Operative CIC | Rushden | 2014 |
| Cando OT Ltd | Runcorn | 2021 |
| Cando Therapy Ltd | Runcorn | 2024 |
| Candodo Ltd | West Byfleet | 2016 |
| Candopro Solutions Ltd | London | 2019 |
| Candour Care Limited | London | 2022 |
| Candour Care Services (Broadview) Limited | St. Albans | 2000 |
| Candour Care Services (Hillcrest) Limited | St Albans | 2012 |
| Candour Care Services (Homeside) Limited | St. Albans | 2000 |
| Candour Care Services Limited | Hertfordshire | 2000 |
| Candour Healthcare Limited | Pontyclun | 2024 |
| Candover Care Ltd | Chandlers Ford | 2025 |
| Candrews Consultancy Limited | Liverpool | 2015 |
| Candy Care Limited | Dagenham | 2013 |
| Candy Vault Ltd | Craigavon | 2025 |
| Candyland MK Limited | Milton Keynes | 2026 |
| Cane Medical Services Ltd | Bournemouth | 2025 |
| Cane Osteopathy Limited | Oxford | 2014 |
| Canetic Services Ltd | Benfleet | 2024 |
| Caniican Ltd | Coventry | 2019 |
| Canim Childcare Services Ltd | London | 2024 |
| Canindcou Limited | London | 2021 |
| Canine Dental Ltd | Cannock | 2024 |
| Canine Guidance Limited | London | 2022 |
| Canine Shield Ltd | London | 2023 |
| Canlas Ic-Care Limited | Leicester | 2020 |
| Canllaw (Eryri) CYF | Caernarfon | 1999 |
| Canmoly Healthcare Ltd | Rushden | 2015 |
| Cann DO Limited | Preston | 2007 |
| Cann Health Cultivation Limited | Chesterfield | 2021 |
| Cann Health Limited | Chesterfield | 2021 |
| Cann-@Bi Limited | Croydon | 2025 |
| Canna Calm Group Ltd | Liverpool | 2026 |
| Canna Care Ltd | Rochdale | 2021 |
| Canna Care Pharma Limited | London | 2019 |
| Canna Clinic Ltd | Barry | 2021 |
| Cannabase Ltd | Birmingham | 2024 |
| Cannaco Health Limited | Blackpool | 2019 |
| Cannacure Ltd | Launceston | 2025 |
| Cannadex Holdings PLC | Cardiff | 2021 |
| Cannadex Ltd | Cardiff | 2020 |
| Cannan Land Enterprise Limited | Barking | 2009 |
| Cannan Limited | Basildon | 2014 |
| Canndr Ltd | London | 2023 |
| Cannfix Ltd | Harrow | 2022 |
| Canniesburn Carehomes Ltd. | Edinburgh | 2006 |
| Canning Dental Clinic Ltd | Slough | 2022 |
| Cannlux Global Limited | Weybridge | 2026 |
| Cannock Care Company Ltd | Walsall | 2026 |
| Cannock Chase and South Staffordshire Care 28 Limited | Cannock | 2016 |
| Cannock Chiropractic Clinic Ltd | Cannock | 2021 |
| Cannock Headache Treatment Limited | Walsall | 2010 |
| Cannock Health and Wellbeing Limited | Cannock | 2022 |
| Cannock Medical Group Limited | United Kingdom | 2021 |
| Cannock Optical Limited | Cannock | 2019 |
| Cannock Osteopaths Limited | Staffs | 2005 |
| Cannon Cardiology Limited | Wilmslow | 2025 |
| Cannon Children Services Limited | Canterbury | 2021 |
| Cannon Hill Clinic Limited | London | 2013 |
| Cannon Hill Psychology Limited | London | 2012 |
| Cannon Safety Limited | Sutton In Ashfield | 2005 |
| Cannon Social Work Ltd | Dartmouth | 2025 |
| Cannon Street Dental Centre Limited | London | 2020 |
| Cannuba Holdings Limited | Rochester | 2019 |
| Cannyx Markets UK Ltd | Surrey | 2019 |
| Canolfan Felin Fach Centre Limited | Pwllheli | 1996 |
| Canolfan Gofal Plant Tiddlywinks Childcare Centre Cyfyngedig | Swansea | 1995 |
| Canolfannau Cynghori SIR Y Fflint, Flintshire Citizens Advice Bureaux | Mold | 2000 |
| Canon House Clinic Ltd. | Beaconsfield | 2018 |
| Canonbury Medical Ltd | Wilmslow | 2016 |
| Canonbury Natural Health Clinic Limited | | 2007 |
| Canopt Limited | Cannock | 2025 |
| Canopus Holdings Ltd | Solihull | 2024 |
| Canopy Connections Counselling Ltd | Edinburgh | 2026 |
| Canopy Healthcare Limited | Harrogate | 2025 |
| Canopy Nursery Bicester Limited | Warwick | 2026 |
| Canova Medical Limited | Wilmslow | 2004 |
| Canrehab Ltd. | Perth | 2015 |
| Canridge Care Ltd | Bury | 2026 |
| Cansford Laboratories Limited | Cardiff | 2010 |
| Cansr Clinic Limited | Newbury | 2017 |
| Cansr.Com Limited | Newbury | 2018 |
| Canta Community Limited | London | 2025 |
| Canta Therapy Limited | Kibworth Beauchamp | 2020 |
| Cantab Anaesthesia Ltd | Cambridge | 2013 |
| Cantab Dental Limited | Harrow | 2023 |
| Cantab MED Ltd | Cambridge | 2022 |
| Cantab Medical Limited | Durham | 2016 |
| Cantab Surgical Group Ltd | Sale Moor | 2019 |
| Cantabrigian Imaging Ltd | Cambridge | 2021 |
| Cantalk Ltd | London | 2003 |
| Canter Equine Assisted Learning & Psychotherapy C.I.C. | Bedford | 2018 |
| Canterburry Care Home Ltd | Bromley | 2025 |
| Canterbury Anaesthesia Solutions Limited | Canterbury | 2025 |
| Canterbury Care and Support Limited | Croydon | 2021 |
| Canterbury Care Homes (NO.2) Limited | Birmingham | 2005 |