| Clippers Limited | Wallingford | 2017 |
| Clippers London Ltd | London | 2023 |
| Clippers N Curls Limited | Blisworth | 2019 |
| Clippers N Snippers Limited | Borehamwood | 2014 |
| Clippers of Hayfield Ltd | Macclesfield | 2008 |
| Clippertastic Dog Grooming Ltd | Carmarthen | 2019 |
| Clipperz Barber Limited | Carterton | 2021 |
| Clippin Gorgeous Ltd | Witham | 2023 |
| Clippity Doo-Dog Ltd | Wellingborough | 2020 |
| Clipprs Ltd | London | 2021 |
| Clips Barber Ltd | Norwich | 2026 |
| Clips 'N' Chips Ltd | Godstone | 2020 |
| Clips of Tring Limited | Tring | 2024 |
| Clipside Ltd | Batley | 2025 |
| Clipso Hairdressers Limited | | 1993 |
| Clipso Limited | Herts | 1978 |
| Clipstone Barbers Limited | Mansfield | 2023 |
| Clipstone Collective Ltd | Bath | 2018 |
| Clique Advisors Limited | London | 2016 |
| Clique Barbershop Ltd | Truro | 2018 |
| Clique Circularity Ltd | Winchester | 2024 |
| Clique Pet Grooming Ltd | London | 2024 |
| Clique Salons Ltd | Newton Aycliffe | 2025 |
| Clitheroe Cryo Ltd | Clitheroe | 2021 |
| Clitheroe DRY Cleaners Limited | Lancashire | 2003 |
| Clive Alexander Ltd | Enniskillen | 2014 |
| Clive Barber Limited | Deeside | 2025 |
| Clive Beardall Restorations Limited | Essex | 2003 |
| Clive Davies Limited | Whitby | 2003 |
| Clive Hall Day Nursery Limited | | 1998 |
| Clive Hasley Monumental Mason Ltd | Cumbria | 2004 |
| Clive John Limited | London | 2024 |
| Clive LEY Shoeing Services Limited | Barnstaple | 2005 |
| Clive Taylor Solutions Ltd | Erith | 2023 |
| Clive Trotman Hairdressing Limited | | 2006 |
| Clivedale UK Limited | London | 2022 |
| Clivedale Ventures Limited | London | 2012 |
| Cliveden Conservation at Houghton Limited | Nr Maidenhead | 2009 |
| Cliveden Conservation Workshop Limited | Maidenhead | 1990 |
| Clives Electrical Limited | Welshpool | 2012 |
| Clixx Limited | Haywards Heath | 2022 |
| CLJ Global Services Ltd | Birmingham | 2013 |
| CLJ Hair Limited | Hull | 2019 |
| Cljm Group Ltd | Kingswinford | 2022 |
| CLK Aesthetics Ltd | Newcastle Upon Tyne | 2024 |
| CLK Marine Ltd | London | 2018 |
| CLK Treatments Ltd | Gateshead | 2025 |
| Clka Consulting Ltd | Manchester | 2024 |
| Clkd Capital Limited | Potters Bar | 2025 |
| Clkdon Limited | Potters Bar | 2024 |
| CLM Aesthetics Limited | Preston | 2017 |
| CLM Services and Consultants Ltd | Bellshill | 2016 |
| Clmhg Limited | Oxford | 2011 |
| Clmr Services Ltd | London | 2017 |
| CLN Clinics Limited | Stockport | 2026 |
| CLN Community Limited | Manchester | 2021 |
| CLN London Ltd | Warrington | 2019 |
| CLO Aesthetics Ltd | Newcastle Upon Tyne | 2025 |
| CLO and Co Hair Studio Limited | Llandudno | 2023 |
| CLO Clips Ltd | London | 2025 |
| Clo&Flo Limited | Swansea | 1993 |
| Cloakes Fire Systems Limited | Folkestone | 2017 |
| Cloakfern Limited | East Molesey | 1984 |
| Cloaksoft Ltd | London | 2025 |
| Clobel Limited | Axminster | 2023 |
| Clobo's Limited | Sheerness | 2011 |
| Clochy Ltd | London | 2026 |
| Clock Care Limited | Crowborough | 2004 |
| Clock Consulting Ltd | London | 2017 |
| Clock Court (Freehold) Limited | Ilford | 2013 |
| Clock House Nail Limited | Beckenham | 2023 |
| Clock OUT Competitions Ltd | Blackpool | 2025 |
| Clock Tower Laundry Services Limited | London | 2010 |
| Clock Tower Park Management Limited | Liverpool | 2023 |
| Clock Tower Valeting Ltd | London | 2022 |
| Clock Workshop (West Kirby) Ltd | Wirral | 2005 |
| Clock Workshop (Witney) Limited | Witney | 2018 |
| Clockeys Ltd | Birmingham | 2025 |
| Clockhouse and New Charlton Community Centre | London | 1999 |
| Clocklease Limited | Ilford | 2013 |
| Clocktower Investments Limited | Hampton | 1996 |
| Clockwise Jewellery & Gems Ltd | Woking | 2025 |
| Clockwise Marketing Ltd | Redhill | 1995 |
| Clockwok Orange Wrap Contracting Limited | Glasgow | 2026 |
| Clockwork Barbers Ltd | Norwich | 2025 |
| Clockwork Finance Ltd | Keighley | 2007 |
| Clockwork Pyramid Limited | Middlesex | 2000 |
| Clockwork Yellow DRY Cleaners of Distinction Ltd. | Lymington | 1998 |
| Cloco Clinic Ltd | Warrington | 2024 |
| Cloco Hairdressing Limited | Warrington | 2025 |
| Cloco Limited | Warrington | 2023 |
| Cloda Killen Beauty Ltd | Clydebank | 2026 |
| Clodagh Rose Virtual Ltd | Ballymena | 2022 |
| Clodian Management Services Limited | Market Harborough | 2017 |
| Cloete Laundry Services Ltd | Blackburn | 2026 |
| Clogher Valley Agricultural Society Limited-The | Co Tyrone | 1987 |
| Cloisters Court Limited | London | 2015 |
| Cloisters Event Limited | Letchworth Garden City | 2019 |
| Clonard Residents Association | Belfast | 1991 |
| Clooney Estate Residents Association | Londonderry | 2008 |