| Capital Solutions Group Ltd | Newcastle | 1999 |
| Capital Solutions Holding Company Limited | London | 2023 |
| Capital Source Ltd | London | 2024 |
| Capital Squared Holdings Ltd | London | 2026 |
| Capital Stage Tonedale 1 Limited | London | 2015 |
| Capital Stage Tonedale 2 Limited | London | 2015 |
| Capital Sterling Limited | Birmingham | 2019 |
| Capital Strategy Corporate Finance Limited | London | 2008 |
| Capital Suisse Ltd | London | 2023 |
| Capital Superhighway Ltd | Solihull | 2013 |
| Capital Synergy Limited | London | 2018 |
| Capital T Ltd | London | 2025 |
| Capital Tax Ltd | Manchester | 2018 |
| Capital Topco Limited | Newport | 2019 |
| Capital Tower Limited | Norfolk | 1997 |
| Capital Trust Financial Management Ltd | Coleraine | 1994 |
| Capital Trust Group Limited | London | 2019 |
| Capital Trust Limited | London | 1968 |
| Capital Trustees Ltd | London | 2024 |
| Capital Two Financial Services Limited | London | 2025 |
| Capital Value Brokers Limited | | 1980 |
| Capital Value Surveyors Holding Limited | St. Ives | 2022 |
| Capital Variation Ltd | London | 2019 |
| Capital Vault UK Limited | London | 2025 |
| Capital Veneer Investment Ltd | Loughton | 2025 |
| Capital Wealth Advice Ltd | Guildford | 2025 |
| Capital Wealth Consultants Ltd | Edinburgh | 2014 |
| Capital Wealth Management(Uk) Limited | Coatbridge | 2016 |
| Capital Wealth Service Ltd | Manchester | 2000 |
| Capital World Investment Limited | London | 2020 |
| Capital Yatirim Properties Ltd | London | 2022 |
| CAPITAL24-7 Limited | London | 2026 |
| Capitalclear Courses Ltd | Bury St. Edmunds | 2023 |
| Capitalco Ltd | London | 2018 |
| Capitaldom Olvic Ltd | Ipswich | 2009 |
| Capitalg Ltd | Harrogate | 2024 |
| Capitalh Holdings Ltd | Sutton Coldfield | 2025 |
| Capitalia Private Office Limited | Bolton | 2018 |
| Capitalinterests Limited | London | 2025 |
| Capitalise Business Support Limited | Heathfield | 2003 |
| Capitalise Holdings Ltd | Birmingham | 2024 |
| Capitalise Trading Ltd | Shefford | 2025 |
| Capitalise Your Finance Limited | Ammanford | 2017 |
| Capitalised Financial Limited | Ipswich | 2021 |
| Capitality Ltd | London | 2025 |
| Capitalium Limited | London | 2018 |
| Capitalixe Ltd | London | 2019 |
| Capitall a Limited | London | 2026 |
| Capitall Finance Holdings Ltd | London | 2026 |
| Capitall Holdings Limited | Upminster | 2017 |
| Capitall Loan Management Limited | London | 2026 |
| Capitalman London Ltd | London | 2017 |
| Capitalman Ltd | London | 2017 |
| Capitalnow Commercial Finance Ltd | Loughton | 2025 |
| Capitalquarry Ltd | Borehamwood | 2025 |
| Capitalrise Finance Limited | London | 2015 |
| Capitals Bidco Limited | London | 2026 |
| Capitalsfly Limited | Ruislip, | 2025 |
| Capitaltick Ltd | London | 2026 |
| Capitalyse Ltd | Leeds | 2021 |
| Capitama Ltd | London | 2012 |
| Capitara Limited | Middleton | 2026 |
| Capitas Energy Finance 2 Limited | London | 2018 |
| Capitas Energy Finance Limited | London | 2017 |
| Capitas Finance Limited | London | 2006 |
| Capitas Partners Limited | London | 2025 |
| Capite (Focal) Limited | London | 1961 |
| Capitecs Limited | Clifton | 1995 |
| Capitello Advisors Limited | London | 2025 |
| Capithold Ltd | London | 2025 |
| Capitique Financial Limited | Edgware | 2020 |
| Capitis Advisors Ltd | Harrow | 2020 |
| Capitis Investments Limited | London | 2019 |
| Capitise Ltd | Harrow | 2025 |
| Capitize Ltd | Harrow | 2025 |
| Capitol Commercial Collections Limited | Watford | 1998 |
| Capitol Group Holdings Limited | Woodford Green | 2024 |
| Capitoline Hill Limited | Camberley | 2020 |
| Capitolis International Holdings Limited | London | 2026 |
| Capitolis International Limited | London | 2026 |
| Capitool Business Finance Limited | Witham | 2026 |
| Capitrad Advisors Limited | Ilford | 2022 |
| Capiva Invest Ltd | London | 2024 |
| Capiyada Limited | London | 2006 |
| Capk Holdings Ltd | Rochester | 2026 |
| Capl Group Ltd | Southampton | 2025 |
| Capl Investments Ltd | London | 2025 |
| Caplan & Caplan Financial Services Limited | Bournemouth | 2021 |
| Caple Banks Limited | Gloucester | 2010 |
| Caple International Limited | London | 2018 |
| Caplen Family Investments Limited | Daventry | 2026 |
| Caplink Group Limited | London | 2024 |
| Caplon Property Finance Limited | London | 2015 |
| Caply Group Ltd | London | 2026 |
| Capm Management Limited | London | 2023 |
| Capman Ltd | Doncaster | 2015 |
| Capmarv Associates Limited | Ongar | 2016 |
| Capnor London Limited | London | 2025 |
| Capo Aquila Limited | London | 2026 |
| Capon Capital Limited | Ashford | 2021 |