| Claybourne Property Management Company Limited | Leighton Buzzard | 2019 |
| Claybury Hall Management Company Limited | New Milton | 2002 |
| Claybury Management Limited | Borehamwood | 1967 |
| Claybury Tenants Management Limited | Stanmore | 2020 |
| Claybury Villas Management Company Limited | New Milton | 2004 |
| Claybush Road (Ashwell) Management Company Limited | Salisbury | 2020 |
| Claycorn Court (Claygate) Limited | Surbiton | 2007 |
| Claycross Court Management Company Limited | Shrewsbury | 1997 |
| Claydon Court (Caversham) Management Company Limited | Crowthorne | 1984 |
| Claydon Court Management Company Limited | Bedford | 1992 |
| Claydon Court Residents Association Limited | Staines-Upon-Thames | 1987 |
| Claydon Hill Farm Management Co Limited | Buckingham | 2005 |
| Claydon House Freehold Limited | London | 2008 |
| Claydon Management (Leopards View) Limited | Birmingham | 1994 |
| Clayfields Management Company Limited | Brighton | 1990 |
| Clayfurlong Barns Management Co. Limited | Cirencester | 2007 |
| Clayfurlong View Management Company Limited | Cirencester | 2021 |
| Claygate Court Residents' Association Limited | New Milton | 1973 |
| Clayhill Flats Limited | Newbury | 1964 |
| Clayhill Freehold Ltd | Newbury | 1998 |
| Clayhill Road Management Company Limited | Croydon | 2007 |
| Clayhurst Properties Limited | London | 1984 |
| Claylands Place Management Limited | London | 2023 |
| Claymere Properties Limited | Rochdale | 2025 |
| Claymoor Estate Residents Limited | Marlow | 1980 |
| Claypath Properties Limited | Durham | 2018 |
| Claypit and Brickyard Management Ltd | Stockport | 2023 |
| Claypit Farm Barns Management Company Limited | Petersfield | 2006 |
| Claystone Property Limited | Attleborough | 2026 |
| Clayton Barker Property Limited | Coalville | 2020 |
| Clayton Court (Freshwater) Management Company Limited | Newport | 1982 |
| Clayton Court Apartments Manco Ltd | Huddersfield | 2020 |
| Clayton Fold (Burnley) Management Company Limited | Bury | 2006 |
| Clayton Grange Management Company Limited | Hoddesdon | 2005 |
| Clayton House Freehold Limited | Camberley | 2016 |
| Clayton Lodge Management Limited | Newcastle Upon Tyne | 2001 |
| Clayton Mews (Management) Ltd. | Croydon | 1994 |
| Clayton Mews Limited | St Mary Bourne | 2022 |
| Clayton's Wharf Management Company Limited | Nottinghamshire | 1997 |
| Claytonbrook Limited | Maidstone | 1995 |
| CLCH25 Limited | Milton Keynes | 2025 |
| Clcm Management Limited | Ellesmere Port | 2024 |
| CLD UK Property Limited | Barking | 2020 |
| Cleadon Hill View Management Company Limited | Sunderland | 1995 |
| Cleadon Old Hall Management Company Limited | South Shields | 1966 |
| Cleadon Park Management Company Limited | South Shields | 1982 |
| Cleadon Vale (Two) Management Company Limited | South Shields | 2012 |
| Cleadon Vale Management Company Limited | South Shields | 2008 |
| Clean and Sparkle Limited | Maidenhead | 2016 |
| Clean Chic Ltd | Grimsby | 2015 |
| Clean Living Property Management Ltd | London | 2024 |
| Clean My Place Ltd | Enfield | 2018 |
| Clean N Gleam Crew Limited | Alcester | 2024 |
| Clean Slate Housing Ltd | Reading | 2025 |
| Clean&Fresh Housekeeping Limited | Chelmsford | 2022 |
| Cleaner for YOU Surrey Ltd | Kenley | 2020 |
| Cleaners R US Devon Ltd | Newton Abbot | 2013 |
| Cleanhills Limited | Derby | 2024 |
| Cleaning Fairies (Gloucester) Limited | Clifton | 2016 |
| Cleaning Fairies (Somerset) Limited | Clifton | 2016 |
| Cleaning UP Limited | | 2005 |
| Cleaning Valeting Support Services Ltd | London | 2005 |
| Cleanstyle Cleaning Services Ltd | London | 2016 |
| Clear Blue Sky Ltd | Warwick | 2021 |
| Clear Green Sky Limited | Manchester | 2023 |
| Clear House Property Services Ltd | Coalville | 2023 |
| Clear N Tidy Ltd | London | 2025 |
| Clear Path Homes Limited | Liverpool | 2025 |
| Clear View Inventories Ltd | London | 2024 |
| Clear Water Court Management Company Limited | London | 2017 |
| Clear Waters (Southbourne) Management Limited | Bournemouth | 2011 |
| Clearbrook Close Management Limited | Frome | 2021 |
| Clearcom Properties Ltd. | Weybridge | 2001 |
| Cleardetail Limited | London | 1993 |
| Cleare Place Management Company Limited | Chalfont St. Giles | 2004 |
| Cleargain Limited | Bristol | 1986 |
| Clearglow Limited | | 1983 |
| Clearhold Property Group Ltd | Poole | 2026 |
| Clearlands Limited | London | 1984 |
| Clearmove Property Investment Ltd | Southall | 2019 |
| Clearmutual Property Management Limited | | 1997 |
| Clearpoint Property Management Company Limited | Christchurch | 2009 |
| Clearstream Residents Association Limited | Hoddesdon | 1983 |
| Clearview Relocation Limited | Newbury | 2000 |
| Clearwater Business Park Limited | Stratford Upon Avon | 2014 |
| Clearwater Drive (M20) Freehold Ltd | Manchester | 2023 |
| Clearwater House Limited | Orpington | 2013 |
| Clearwater Installations Limited | Glasgow | 2013 |
| Clearwater Management Company (Bishopsteignton) Limited | Teignmouth | 2005 |
| Clearwater Place Apartments RTM Company Limited | Kingston Upon Thames | 2007 |
| Clearwater Place Ltd | Kingston Upon Thames | 2009 |
| Clearwater Property Group Limited | Stroud | 2008 |
| Clearwater Utilities Ltd | Seaham | 2018 |
| Clearwater Village Management (2) Limited | Bolton | 2003 |
| Clearway Court Residents Company Limited | Cardiff | 2009 |
| Clearways Business Estate Management Limited | Sidcup | 2017 |
| Cleary Bros Ltd | Abingdon | 2024 |
| Cleary Court Vicarage Crescent Limited | Bromley | 2018 |
| Cleasby Court Management Company Limited | Ilkley | 2009 |
| Cleasby Grange Freehold Limited | Bournemouth | 2004 |