| Classy Hills Ltd | Croydon | 2024 |
| Classy MAN Barber Shop Ltd | Liverpool | 2025 |
| Classy Nail Salon Ltd | London | 2024 |
| Classy Nails & Beauty (KT) Limited | Gillingham | 2019 |
| Classy Nails & Beauty Stretford Limited | Manchester | 2023 |
| Classy Nails (UK) Ltd | Southampton | 2012 |
| Classy Nails 254 Ltd | Dagenham | 2024 |
| Classy Nails 33 Ltd | Olney | 2024 |
| Classy Nails 35 Ltd | Heckmondwike | 2025 |
| Classy Nails 86 Limited | Manchester | 2026 |
| Classy Nails and Beauty 35 Ltd | London | 2019 |
| Classy Nails Bamber LT Limited | Preston | 2026 |
| Classy Pawz Limited | Shildon | 2019 |
| Classy Styles Limited | Newcastle Under Lyme | 2008 |
| Classyhair Beauty Ltd | London | 2023 |
| Classykurd Ltd | Bedford | 2023 |
| Clato Legacy Ltd | London | 2014 |
| Clator Services (UK) Ltd | London | 2014 |
| Clatrian Services Limited | Slough | 2014 |
| Clats Limited | Altrincham | 2016 |
| Claude Advances (UK) Limited | Soho | 2023 |
| Claude JP Ltd | London | 2014 |
| Claude Nell Hair Academy Ltd | Rochdale | 2012 |
| Claude's Classic Haircut Ltd | Newcastle Upon Tyne | 2026 |
| Claudia Aesthetic Practitioner Ltd | Newton Abbot | 2021 |
| Claudia Collaborations Ltd | Exeter | 2019 |
| Claudia Colucci Consultancy Limited | London | 2016 |
| Claudia Cristina Ltd | Ilford | 2014 |
| Claudia Dorsch Interior Design Limited | Newton Abbot | 2009 |
| Claudia Fallah Cosmeceuticals Limited | London | 1999 |
| Claudia Hairstylist Ltd | London | 2023 |
| Claudia Lash & Aesthetic Ltd | Bristol | 2025 |
| Claudia's Limited | Coalville | 2012 |
| Claudia’S Cosmetic Clinic Limited | Bracknell | 2021 |
| Claudio P Construction Ltd | London | 2021 |
| Claudius Lucky Limited | London | 2024 |
| Clauds Angel Limited | Huddersfield | 2021 |
| Claudsalon Ltd | London | 2025 |
| Claudy Mari Aesthetics Ltd | London | 2023 |
| Claudy Rural Development Ltd | Claudy | 1997 |
| Clausentum Masonic Hall Limited | Southampton | 2024 |
| Clauss Mechanical Services Ltd | Northolt | 2014 |
| Clavana Ltd | London | 2025 |
| Claverton Woodgate Limited | Bury | 2022 |
| Clavico Limited | Maghull | 2023 |
| Clavier Media Company Limited | Guildford | 2009 |
| Clavis Locksmiths Limited | Epping | 2025 |
| Clawaddicts Ltd | Haywards Heath | 2022 |
| Clawed & Dangerous Ltd | Carmarthen | 2025 |
| Claws and Pause Ltd | Edinburgh | 2024 |
| Claws Beauty Limited | Rugby | 2016 |
| Claws by Chloe Ltd | Leeds | 2025 |
| Claws Nail and Beauty Limited | Rugby | 2013 |
| Clawtech Ltd | Solihull | 2003 |
| Clawz Patrol Ltd | Mitcham | 2025 |
| Claxton Hair Limited | Rossendale | 2015 |
| Clay & Sheldon Properties Limited | Market Drayton | 2024 |
| Clay Bar Studios Limited | Manchester | 2025 |
| Clay Coffee Limited | Ruislip, | 2026 |
| Clay Cross 30 Ltd | Chesterfield | 2024 |
| Clay Cross Barbers Ltd | Chesterfield | 2023 |
| Clay Day Ltd | Mitcham | 2020 |
| Clay Hair Limited | Epsom | 2009 |
| Clay Hair Studio Ltd | Solihull | 2022 |
| Clay Holdco Limited | Crewe | 2024 |
| Clay Management Limited | Leamington Spa | 2013 |
| Clay Pasztor Architectural Interior Ltd | London | 2012 |
| Clay Pipe Development Association Limited | Halifax | 1965 |
| Clay Records Limited | Milton Keynes | 1989 |
| Clay's Barbers Ltd | Falmouth | 2021 |
| Clay's Doors & Window Repairs Ltd | Leicester | 2019 |
| Claya Investments Ltd | Romford | 2010 |
| Claybourne's (TS) Limited | Spalding | 2014 |
| Claybridge Care Ltd | Cullompton | 2022 |
| Clayclean Ltd | Basildon | 2018 |
| Clayco Holdings Ltd | Manchester | 2024 |
| Clayconcepts Limited | Coventry | 2011 |
| Claycreatives Ltd | London | 2024 |
| Claydon & Barham Local Community Trust Limited | Ipswich | 2002 |
| Claydon Court Residents Company Limited | Buckinghamshire | 1973 |
| Claydon Solar Action Group | Buckingham | 2024 |
| Clayewater Planning Group Ltd | Barnstaple | 2013 |
| Clayfull Limited | Bonnyrigg | 1994 |
| Clayhall Osteopaths Ltd | Ilford | 2015 |
| Claylands Court Limited | Sevenoaks | 2019 |
| Claymore Facilities Services Ltd | Glasgow | 2019 |
| Claymore Planning and Development Limited | Edinburgh | 2024 |
| Clayples Limited | Preston | 2012 |
| Clays Fire Extinguisher Services Limited | Aylesbury | 2025 |
| Clayton & Ball Limited | Kingsbridge | 2019 |
| Clayton Barbers Ltd | Newcastle | 2020 |
| Clayton Cabinets Limited | Okehampton | 2022 |
| Clayton Cleaning Services Ltd. | Leeds | 2021 |
| Clayton Connect Limited | Ruislip, | 2024 |
| Clayton Group Limited | Oldbury | 2017 |
| Clayton Hair Limited | Glasgow | 2019 |
| Clayton Hairdressing Limited | Royton | 2026 |
| Clayton Hoists Limited | Rotherham | 2014 |
| Clayton Lighting & Traffic Ltd. | Edinburgh | 2017 |
| Clayton Nails & Spa Ltd | Liverpool | 2023 |