| Calascibettaco Ltd | Wallsend | 2026 |
| Calatrava Capital Management Ltd | London | 2026 |
| Calatreth Limited | Helston | 2022 |
| Calavo Investments Limited | Nr. Leominster | 1988 |
| Calbion Investments Ltd | Bolton | 2015 |
| Calbmpc U/W Facilities Ltd | London | 2021 |
| Calborne Limited | London | 2008 |
| Calbro Holdings Ltd | Omagh | 2024 |
| Calcinotto Holdings Limited | Wimborne | 2013 |
| Calcis Ltd | Buxton | 2013 |
| Calcium Bidco Limited | Newcastle | 2024 |
| Calcium Midco Limited | Newcastle | 2024 |
| Calcluth & Sangster (Insurance Brokers) Limited | Glasgow | 1999 |
| Calcluth & Sangster Limited | Glasgow | 2012 |
| Calcobe Limited | Bolton | 2021 |
| Calcol Limited | Stroud | 2025 |
| Calcourt Holdings Ltd | Dudley | 2018 |
| Calculass Limited | Newry | 2021 |
| Calculated Commercial Limited | Thirsk | 2022 |
| Calculated Enterprises Ltd | Croydon | 2026 |
| Calculated Financial Services Limited | Thirsk | 2022 |
| Calculus Capital Limited | London, | 1999 |
| Calculus Financial Limited | Salford | 2013 |
| Calculus Media Limited | London, | 2009 |
| Calculus VCT PLC | London, | 2010 |
| Calculux Trading Ltd | London | 2021 |
| Calcworth Limited | Maidenhead | 2017 |
| Caldan Holdings Ltd | Edinburgh | 2025 |
| Caldar International Holdings Ltd | Newcastle Upon Tyne | 2025 |
| Caldbeck Family Limited | Duns | 2026 |
| Caldcoats Holdings Ltd | Glasgow | 2025 |
| Caldea Nominees Limited | Brunswick Street Liverpool | 1997 |
| Caldec Holdings Ltd | Whitehills Business Park | 2024 |
| Caldecote Holdings Limited | London | 2021 |
| Caldecourt Holdings Limited | Faringdon | 2023 |
| Calder Associates Ltd | Tranent | 2014 |
| Calder Financial Solutions Ltd | Worthing | 2022 |
| Calder Group Highland Ltd | Invergordon | 2026 |
| Calder Leasing and Management Limited | Bradford | 1997 |
| Calder Lodge (Properties) Limited | Lancaster | 2019 |
| Calder Products Ltd | Blackpool | 2015 |
| Calder VON Behren Limited | Alperton | 2011 |
| Caldera Bidco Limited | London | 2024 |
| Caldera Capital Finance Limited | Sutton Coldfield | 2013 |
| Caldera Capital Limited | London | 2024 |
| Caldera Finance Limited | Birmingham | 2025 |
| Caldera Midco Limited | London | 2024 |
| Caldera Nominee Limited | London | 2024 |
| Caldera Topco Limited | London | 2024 |
| Caldercool Holdings Ltd | Halifax | 2020 |
| Caldercruix Ephl Limited | Glasgow | 2022 |
| Calderdale Hospital SPC Financing PLC | Manchester | 2020 |
| Calderdale Ltd | Nottingham | 2016 |
| Calderdale Trades Ltd | | 1986 |
| Calderhead Holding Limited | Redditch | 2025 |
| Caldermont Private Finance Ltd | Manchester | 2026 |
| Calderon Partners Ltd | London | 2025 |
| Calderpeel (Holdco) Limited | Altrincham | 2023 |
| Calderpeel Holdings Limited | Altrincham | 2017 |
| Calderstones Property Company Limited | Liverpool | 1951 |
| Calderwood Community Services Limited | Dunfermline | 2017 |
| Calderwood Family Investment Company Ltd | Oxford | 2017 |
| Calderwood Financial Planning Ltd | Linlithgow | 2024 |
| Calderwood Wealth Management Limited | London | 2014 |
| Calderys Holding Limited | London | 2022 |
| Caldesi Holdings Limited | London | 2020 |
| Caldesi Investments Limited | London | 2020 |
| Caldey Corporate Finance Limited | Newbury | 2020 |
| Caldhame Holdings Limited | Belfast | 2026 |
| Caldino Holdings Ltd | Castleford | 2017 |
| Caldol Ltd | London | 2007 |
| Caldron Investment Limited | London, England | 2025 |
| Caldru Holdings Ltd | Stockport | 2018 |
| Caldwell and Pierce Holdings Limited | London | 2026 |
| Caldwell Financial Planning Limited | Falkirk | 2024 |
| Caldwell Holdings Ltd | Omagh | 2023 |
| Caldwell London Limited | London | 2014 |
| Caldylell Design Limited | Cwmbran | 2023 |
| Cale Holdings Ltd | Ilkeston | 2022 |
| Cale Investments Limited | Pershore | 2026 |
| Caleb Holdings Ltd | Uttoxeter | 2019 |
| Caleb Roberts Financial Management Limited | Knighton | 2009 |
| Caleb Roberts Insurance Services Limited | Powys | 1981 |
| Caleb Slater Trading Limited | Northampton | 2025 |
| Caleb Spence Financial Services Limited | Lowestoft | 2010 |
| Calebridge Limited | Ayrshire | 1999 |
| Caledon Cover Limited | Wakefield | 2023 |
| Caledon Group Ltd | London | 2023 |
| Caledon Holdings Limited | Wakefield | 2023 |
| Caledon MGA Ltd | Norwich | 1996 |
| Caledon Real Estate Investment Ltd | London | 2018 |
| Caledonia Asset Finance Ltd | Turriff | 2020 |
| Caledonia Asset Management Limited | Edinburgh | 2000 |
| Caledonia Basketball Holdings Ltd | Glasgow | 2022 |
| Caledonia Capital 1 Limited | Coatbridge | 2022 |
| Caledonia Capital Limited | Coatbridge | 2022 |
| Caledonia Care Group Limited | London | 2026 |
| Caledonia Ccil Distribution Ltd | London | 2008 |
| Caledonia Doors (Holdings) Limited | Glasgow | 2026 |
| Caledonia Investment Partners Ltd | Edinburgh | 2024 |