| CK Communications Holdings Limited | Cardiff | 2025 |
| CK Construct Holdings Ltd | Ilkeston | 2024 |
| CK EOT Trustee Limited | Sheffield | 2024 |
| CK Events Limited | Nottingham | 2019 |
| CK Facilities Management Ltd | London | 2001 |
| CK Financial Advisory Ltd | Greenock | 2015 |
| CK Harwood Developments Limited | Ilminster | 2014 |
| CK Holdings Limited | Newton Aycliffe | 2019 |
| CK Home Hub Financial Services Limited | Glasgow | 2019 |
| CK Home Hub Limited | Glasgow | 2021 |
| CK Lamberts Investments Ltd | London | 2025 |
| CK Mortgages Limited | Uxbridge | 2018 |
| CK Noble (UK) Limited | London | 2019 |
| CK QPS Holdings Ltd | Salisbury | 2023 |
| CK Scotland Limited | Lanark | 2019 |
| CK SOL Holdings Ltd | Plymouth | 2023 |
| CK Steel (UK) Limited | London | 2018 |
| CK Swift Supply Limited | Wickford | 2024 |
| CK Technology Holdings II Limited | London | 2022 |
| CK Telecoms UK Investments Limited | London | 2015 |
| CK William LNG 2 Company Limited | London | 2025 |
| CK William LNG Company Limited | London | 2025 |
| CK10 Ltd | Wimborne | 2017 |
| CK85 Ltd | Upminster | 2025 |
| Ckaps Ltd | Esher | 2025 |
| Ckashcapital Ltd | Birmingham | 2023 |
| CKB Group Limited | Orpington | 2016 |
| CKC Group Ltd | Leeds | 2026 |
| CKC Holdings (N.I.) Limited | Newry | 2018 |
| CKC Holdings Ltd | Dundee | 2025 |
| CKC Manufacturing Holdings Limited | London | 2010 |
| Ckcm Holdings Limited | Lichfield | 2023 |
| Ckcs Holdings Limited | Alderley Edge | 2024 |
| CKD Capital OIL and GAS Ltd | London | 2021 |
| CKD Holdings Limited | Droitwich | 2025 |
| Ckdk Holdings Ltd | Pinner | 2025 |
| CKE (East Anglia) Limited | Great Yarmouth | 2025 |
| CKE Group Ltd | London | 2025 |
| Ckec Products Ltd | Belfast | 2026 |
| Ckfx Trading Limited | Pinner | 2025 |
| CKG Holdings Ltd | Harrow | 2026 |
| CKH Holdings Ltd | London | 2017 |
| CKH Botanicals Ltd | Malvern | 2023 |
| Ckhp Group Ltd | London | 2023 |
| CKI Bidco Ltd. | London | 2024 |
| CKI GAS Infrastructure Limited | London | 2014 |
| CKI Holdings Limited | Cannock | 2015 |
| CKI UK Co 5 Limited | Durham | 2011 |
| CKI UK Co 6 Limited | Durham | 2011 |
| Cking Ltd | London | 2024 |
| Cklg Group Ltd | Cambridge | 2021 |
| CKM Investments Limited | London | 2012 |
| CKM Partners Ltd | Swindon | 2025 |
| CKM Surveyors Ltd | Rooksbridge | 2022 |
| CKM Truro Ltd | Weston-Super-Mare | 2024 |
| CKM Vexousia Limited | Wallington | 2024 |
| CKM3 Holdings Ltd | Henley-On-Thames | 2023 |
| CKM3 Investments Ltd | Henley-On-Thames | 2023 |
| Ckma Group Limited | Croydon | 2025 |
| Ckma Limited | Croydon | 2019 |
| CKN Holdings Ltd | Thornton Heath | 2025 |
| CKP Holding Limited | London | 2022 |
| CKP Investments Limited | Keele | 2021 |
| Ckpn Limited | Wilmslow | 2025 |
| Ckps Investments Limited | Leicester | 2025 |
| CKR Brickwork Limited | Gillingham | 2019 |
| CKR Investment Management Ltd | Colchester | 2009 |
| Ckrc Limited | London | 2018 |
| Ckre Limited | London | 1998 |
| CKT Bakery Ltd | Rotherham | 2021 |
| CKV Financial Services Limited | Rochester | 2023 |
| CKW Drilling Holdings Limited | Winchmore Hill | 2026 |
| CKW Management Services Ltd | Redditch | 2023 |
| Ckwright Ltd | Glasgow | 2025 |
| CL & Co. Management Services Ltd | London | 1986 |
| CL & MT Holdings Limited | Blackburn | 2023 |
| CL (Financial Services) Limited | Cardiff | 2005 |
| CL Advisory Limited | London | 2013 |
| CL Capital (UK) Limited | Wolverhampton | 2016 |
| CL Financial Services (Enniskillen) Ltd | Enniskillen | 2017 |
| CL Fish Limited | Grimsby | 2020 |
| CL Forgotten Coast UK Holdings Ltd | London | 2023 |
| CL Group Holdings Limited | London | 2020 |
| CL Holding Group Limited | Broadstairs | 2025 |
| CL Holdings Group Limited | Wolverhampton | 2023 |
| CL Intermediate (UK) Limited | London | 2012 |
| CL Investment Holdings Ltd | London | 2025 |
| CL Investments Limited | Bromley | 2019 |
| CL Number Twenty Eight Limited | Hook | 2018 |
| CL Number Twenty Nine Limited | Hook | 2018 |
| CL Number Twenty Seven Limited | Hook | 2018 |
| CL Number Twenty SIX Limited | Hook | 2018 |
| CL UK RE 2 Ltd | London | 2018 |
| CL2R Holdings Limited | Newtownabbey | 2017 |
| CL8ON Mexican Limited | Worcester | 2024 |
| CLA Group Trading Ltd | Wednesbury | 2022 |
| CLA Holmes Ltd | Ventnor | 2026 |
| Claas Financial Services Limited | Basingstoke | 2006 |
| Clachaig Holdings Ltd | Glencoe | 2017 |
| Clacham Limited | Devizes | 1979 |