| Clear TEL Group Limited | London | 2024 |
| Clear the Chaos Ltd | Bicester | 2023 |
| Clear Universal Limited | Harlow | 2021 |
| Clear View 77 Ltd | Dorking | 2017 |
| Clear View Learning Ltd | Windermere | 2015 |
| Clear Village Trustee Limited | London | 2013 |
| Clear Waste Links Ltd | Cleethorpes | 2026 |
| Clear Waterways Ltd | Weston-Super-Mare | 2025 |
| CLEAR2GO Ltd | Basildon | 2021 |
| Cleara Consulting Limited | London | 2009 |
| Clearagent Limited | Warrington | 1995 |
| Clearanswer Limited | Rayleigh | 2014 |
| Clearaway Mini Skips (Worcester) Limited | Malvern | 1985 |
| Clearbrew Central Ltd | Tamworth | 2018 |
| Clearbridge Capital Limited | Corsham | 2025 |
| Clearcav Ltd | London | 2026 |
| Clearcut Engraving Limited | Rayleigh | 2015 |
| Clearcut Projects Limited | London | 2008 |
| Clearcut Services Ltd | Bromley | 2025 |
| Clearercare Podiatry North Warwickshire Limited | Birmingham | 2022 |
| CLEARFACE49 Limited | Preston | 2015 |
| Clearfocus Training Limited | Exeter | 2017 |
| Clearhills Limited | Nuneaton | 2025 |
| Clearlase Leeds Limited | Sheffield | 2024 |
| Clearlase Limited | Sheffield | 2022 |
| Clearly Clean Ltd | London | 2015 |
| Clearly Creative by Leanna Limited | Isle Of Benbecula | 2025 |
| Clearly Destiny Ltd | London | 2011 |
| Clearly Wellbeing Ltd | London | 2023 |
| Clearly YOU Ltd | London | 2015 |
| Clearlyvisa Ltd | London | 2022 |
| Clearmeda Ltd | Stratford-Upon-Avon | 2025 |
| Clearmur Limited | Glenrothes | 2018 |
| Clearpath Leads Limited | Preston | 2026 |
| Clearpath Wills and Estate Planning Ltd | Banbury | 2023 |
| Clearpay Merchant Services Ltd | Aylesbury | 2019 |
| Clearplan Associates Limited | Purley | 1989 |
| Clearq Consulting Limited | Cheltenham | 2017 |
| Clearskin Ltd | Chesterfield | 2021 |
| Clearskin Skin Care Limited | Luton | 2021 |
| CLEARSKIN33 Ltd | Birmingham | 2025 |
| Clearsky Cloud Ltd | Wallington | 2020 |
| Clearsky Environmental Relief Ltd | Egham | 2024 |
| Clearsons Limited | Reading | 1979 |
| Clearspin Ltd | Windermere | 2019 |
| Clearstone Services SH UK Limited | Chelmsford | 2018 |
| Clearstones HFX Services UK Limited | London | 2018 |
| Clearstones Meadows Limited | Wakefield | 2022 |
| Clearstones Services UK London Limited | Nottingham | 2018 |
| Clearstride Ltd | London | 2019 |
| Cleartech Cleaning Solutions Ltd | London | 2019 |
| Cleartech Construction Cleaning Services Limited | York | 2016 |
| Clearview Components and Spraying Ltd | Wembley | 2022 |
| Clearview Maintenance (N.E) Limited | South Shields | 2018 |
| Clearvoice Nigeria Limited | Ipswich | 2025 |
| Clearwater Coaching Ltd | Oldham | 2021 |
| Clearwater Corp Limited | Ormskirk | 2019 |
| Clearway (Midlands) Limited | Nottingham | 2002 |
| Clearway Christian Ministries | Birmingham | 2002 |
| Clearway Express Limited | Wallasey Village | 2019 |
| Clearway Kennels Limited | Salisbury | 2020 |
| Clearway Pools and Spas Thames Valley Ltd | Ruislip, | 2025 |
| Clearwell Energy Holdings Limited | Aberdeen | 2017 |
| Clearwell Energy Limited | Hants | 2010 |
| Clearwell Holding Co. Ltd | Brighouse | 2024 |
| Clearwell Pest Control Services Limited | Brighouse | 1997 |
| Clearwell Services (UK) Limited | Brighouse | 2003 |
| Clearwood (Dilton Marsh) Limited | Westbury | 2010 |
| Cleator Moor Community Interest Company | Cleator Moor | 2017 |
| Cleaving Husband Foundation | Oxford | 2026 |
| Cleck VIP Cuts Ltd | Cleckheaton | 2025 |
| Cleckheaton Barbers Limited | Bradford | 2026 |
| Cleddau Memorials Limited | Milford Haven | 2014 |
| Clee Consultants Ltd | Cleethorpes | 2026 |
| Clee Fadez Ltd | Cleethorpes | 2024 |
| Clee Hill Investments Limited | Sutton Coldfield | 2017 |
| Cleen Finish 2. Ltd | London | 2017 |
| Cleen Finish 3 Ltd | Charlton | 2019 |
| Cleen Finish Ltd | London | 2006 |
| Cleenish Community Association | Enniskillen | 2004 |
| Cleenish Renewal Co Ltd - the | Enniskillen | 2006 |
| Cleethorpes Hair Lounge Ltd | Cleethorpes | 2018 |
| Cleeve Handyman & Garden Services Ltd | Cheltenham | 2021 |
| Cleeve HOW (Windermere) Limited | Cumbria | 1985 |
| Cleevelands Residents Association Cheltenham Limited | Cheltenham | 1997 |
| Clegdale Limited | Bristol | 1982 |
| Cleggs Group Ltd | Blackburn | 2022 |
| Cleggs Properties Ltd | Blackburn | 2024 |
| Cleland Properties (Holcombe) Limited | London | 2005 |
| Clem & Co Limited | Manchester | 2019 |
| Clemence Hair Beauty Limited | Huddersfield | 2022 |
| Clemence Vallot Ltd | Thames Ditton | 2024 |
| Clemens Cutz Ltd | Leamington Spa | 2025 |
| Clement Advisory Limited | Goffs Oak | 2018 |
| Clement Clarke Communications Limited | Sudbury | 2015 |
| Clement Marketing Ltd | London | 2025 |
| Clement Safety Limited | Nuneaton | 2022 |
| Clementina Support Services Limited | Middlesex | 2016 |
| Clementine Weddings and Events Limited | Dunblane | 2021 |
| Clementoni UK Ltd | London | 2002 |