| Clarity Mortgages Limited | Beckenham | 2007 |
| Clarity Over Clout Ltd | Derby | 2026 |
| Clarity Postmortem Enterprise Limited | Barnsley | 2026 |
| Clarity Property Finance Limited | Berkhamsted | 2022 |
| Clarity Services Holdings Ltd | Bournemouth | 2025 |
| Clarity Software Group Holdings Limited | Solihull | 2020 |
| Clarity Trustees Limited | London | 2020 |
| Clarity Valuations Ltd | Bristol | 2016 |
| Clarity Wealth Limited | Leeds | 2016 |
| Clarity Wealth Services Limited | Stirling | 2012 |
| Clarivate Analytics (Compumark) Limited | London | 2017 |
| Clarivate Analytics (International) Limited | London | 2016 |
| Clark Partners Ltd | Corby | 2012 |
| Clark & Clark Group Holdings Ltd | Coventry | 2026 |
| Clark & Clark Holdings Ltd | Peterborough | 2024 |
| Clark & Family Holdings Limited | Ashford | 2026 |
| Clark & Thomson Service Group Limited | Biggar | 2023 |
| Clark Anderson Group Limited | Dundee | 2022 |
| Clark Benefit Consulting Ltd | London | 2012 |
| Clark Boyle Financial Services Ltd | Glasgow | 2024 |
| Clark Boyle Holdings Limited | Glasgow | 2023 |
| Clark Business Solutions Limited | Corby | 2015 |
| Clark C Holdings Ltd | Lichfield | 2023 |
| Clark Capital Five Ltd | Andover | 2024 |
| Clark Casey Limited | Calstock | 2008 |
| Clark Electrical Holdings Ltd | Doncaster | 2020 |
| Clark Finance Ltd | Quorn | 2021 |
| Clark Financial Advisory Limited | Hope Valley | 2013 |
| Clark Financial Limited | Basingstoke | 2002 |
| Clark Financial Services Limited | New Milton | 2005 |
| Clark Holdings (UK) Limited | Gloucester | 2013 |
| Clark Homes Group Limited | Morpeth | 2015 |
| Clark Insurance UK Ltd | Bristol | 2010 |
| Clark Integrated Technologies Limited | Turriff | 2015 |
| Clark Legend Ltd | Taunton | 2025 |
| Clark Marshall Associates Ltd | Kent | 1996 |
| Clark Mortgages Ltd | Chester | 2022 |
| Clark Mulhern Holdings Limited | Solihull | 2024 |
| Clark Premises Ltd | Paisley | 2025 |
| Clark Property Holdings Ltd | London | 2019 |
| Clark Richards Limited | London | 2008 |
| Clark Shaw Associates Limited | Taunton | 2023 |
| Clark Shaw Commercial Limited | Taunton | 2025 |
| Clark Thomson Insurance Brokers Limited | Glasgow | 1997 |
| Clark Thomson Mortgagefinders Ltd | Dundee | 2007 |
| Clark Trading Limited | Fareham | 2014 |
| Clark-Wright Holdings Limited | Bromley | 2025 |
| Clarkall Limited | Leighton Buzzard | 2025 |
| Clarke & Carter (Holdings) Limited | Ipswich | 2016 |
| Clarke & Co Group Limited | Bury St Edmunds | 2024 |
| Clarke & Co Trading Ltd | London | 2026 |
| Clarke and Pulman Holdings Group Limited | Ormskirk | 2020 |
| Clarke and Pulman Holdings Limited | Ormskirk | 2017 |
| Clarke and Wheate Holdings Limited | Leigh-On-Sea | 2020 |
| Clarke Baron Associates Limited | Bromsgrove | 2006 |
| Clarke Brookville Ltd | Holywood | 2025 |
| Clarke Business Group Limited | Chipping Norton | 2011 |
| Clarke Capital Group Limited | Manchester | 2023 |
| Clarke Construction Group Holdings Limited | Draycott | 2025 |
| Clarke Developments Group Ltd | Lancing | 2022 |
| Clarke Dove (Insurance Brokers) Limited | Nottingham | 1982 |
| Clarke Estate Holdings Ltd | Poole | 2026 |
| Clarke Family Investments Limited | Sheffield | 2019 |
| Clarke Fencott Financial Planners Limited | London | 2014 |
| Clarke Financial Consulting Limited | Aston Abbotts | 2016 |
| Clarke Financial Ltd | Middlesbrough | 2025 |
| Clarke Financial Planning Ltd | Coleraine | 2013 |
| Clarke Financial Planning Services Limited | Cranleigh | 2016 |
| Clarke Hendrik Global Ltd | Manchester | 2025 |
| Clarke Hendrik Group Ltd | Manchester | 2021 |
| Clarke Holdco Limited | Ballymena | 2023 |
| Clarke Holdings (NW) Limited | Blackpool | 2020 |
| Clarke Holdings (SW) Ltd | Seaton | 2020 |
| Clarke Holdings Group Limited | West Bromwich | 2024 |
| Clarke Holdings Yorkshire Ltd | Halifax | 2026 |
| Clarke Independent Limited | High Wycombe | 2008 |
| Clarke Investment Group Ltd | Crewe | 2021 |
| Clarke Jeffreys Insurance Brokers Limited | Hereford | 2002 |
| Clarke Jones Holdings Limited | Wigan | 2024 |
| Clarke Metal Services Holdings (Cheshire) Limited | Stoke-On-Trent | 2024 |
| Clarke OIL (Holdings) Limited | Redditch | 2018 |
| Clarke Preston Group Limited | Bristol | 2025 |
| Clarke Prop Holdco Limited | Ballymena | 2022 |
| Clarke Property & Homes Ltd | Leyland | 2020 |
| Clarke Robinson & Co Ltd | Bristol | 2005 |
| Clarke Trade Holdco Limited | Ballymena | 2022 |
| Clarke Venture Group Holdings Limited | Cannock | 2025 |
| Clarke Williams Ltd | Tonbridge | 2016 |
| Clarke-Walker Financial Management Limited | Brighton | 2006 |
| Clarkes Bespoke Holdings Ltd | Hyde | 2024 |
| Clarkes Capital Group Ltd | Hartford | 2024 |
| Clarkes Holdings Limited | Leigh-On-Sea | 2019 |
| Clarkes Parks Limited | Dundee | 2020 |
| Clarkewood Limited | 11-15 New Road | 2014 |
| Clarkrest Holdings Limited | London | 2023 |
| Clarks Group Holdings Limited | Derby | 2024 |
| Clarks Pension Trustee (2005) Limited | Somerset | 2004 |
| Clarks Vehicle Holdings Limited | Doncaster | 2022 |
| Clarkson Alliance Cost Management Ltd | Kidlington | 2015 |
| Clarkson Capital Limited | London | 1997 |