| Cakes Limited | Harrow | 2021 |
| Cakes My Middle Name Ltd | Bo'Ness | 2021 |
| Cakes N ALL Limited | London | 2020 |
| Cakes N Bakes Limited | Sheffield | 2026 |
| Cakes N' Desserts Limited | Canvey Island | 2020 |
| Cakes of Distinction Ltd | Birmingham | 2022 |
| Cakes of Grace Ltd | Bristol | 2025 |
| Cakes on the Corner Ltd | London | 2022 |
| Cakes Unusual Limited | Gateshead | 2025 |
| Cakes&Crumbs Ltd | Coventry | 2025 |
| Cakesburg Ltd | Tottenham Hale | 2017 |
| Cakesbybonkus Limited | Dagenham | 2021 |
| Cakesbycorte Ltd | Hounslow | 2022 |
| Cakesbyiram Ltd | Birmingham | 2025 |
| Cakesbylulu Ltd | Wellingborough | 2020 |
| Cakesbymx Limited | Edinburgh | 2021 |
| Cakesbysarah Ltd | Sheffield | 2025 |
| Cakesco Ltd | Stamford | 2022 |
| Cakesforall Limited | Manchester | 2025 |
| Cakesmiles.Com Limited | Leicestershire | 2004 |
| Cakesmiths Group Limited | Bristol | 2005 |
| Cakestand Baking Ltd | Bedford | 2022 |
| Cakeville Patisserie Limited | Newcastle Upon Tyne | 2025 |
| Cakey Bakey Co. Ltd | Bristol | 2013 |
| Cakey Bakey Newport, Brough Limited | Brough | 2025 |
| Cakeybakeydoodaa Ltd | Ongar | 2020 |
| Cakeyit Ltd | Harrow | 2026 |
| Cakeys Cakes Ltd | London | 2024 |
| Cakezonescotland Limited | Edinburgh | 2026 |
| Cake’D Couture Ltd | Leicester | 2026 |
| Cakies Ltd | Manchester | 2019 |
| Cako Electric Ltd | London | 2026 |
| Cakoni Construction Ltd | London | 2020 |
| Caktus Limited | Bournemouth | 2012 |
| CAL Electrical Solutions Limited | London | 2019 |
| CAL Enterprises Limited | Cumbria | 2003 |
| CAL Gavin Limited | Alcester | 1980 |
| CAL Jewellery Limited | Halifax | 2024 |
| CAL Services UK Limited | Weston-Super-Mare | 2004 |
| CAL Smith Conservation Framing Ltd | Colchester | 2020 |
| Cal-Com Systems Limited | Chorley | 2015 |
| Cala Computers Limited | Christchurch | 1992 |
| Calaban Technologies Limited | Beckenham | 2025 |
| Calabay Environmental Limited | Surbiton | 2005 |
| Calabria MIA Ltd | Swindon | 2026 |
| Caladar Services Ltd | West Midlands | 2003 |
| Caladen Drinks Limited | Sheffield | 2026 |
| Caladen Ltd | Nottingham | 2011 |
| Caladore Limited | Merseyside | 2003 |
| Calamus Group Limited | Birmingham | 2021 |
| Calamus UK Ltd | Stratford-Upon-Avon | 2021 |
| Calandine Lifts Limited | Lincolnshire | 2005 |
| Calanit Limited | London | 2024 |
| Calatherm Limited | Tamworth | 1996 |
| Calavera Ltd | Godalming | 2020 |
| Calbee Group (UK) Ltd | Altrincham | 2014 |
| Calbrook Coachworks Ltd | Leatherhead | 2023 |
| Calburn Services Limited | Eastbourne | 1999 |
| Calcert Instruments Limited | Station Road | 2003 |
| Calchou Electronics Ltd. | | 1994 |
| CALCIN8 Energy Limited | King'S Lynn | 2021 |
| Calcitech Europe Ltd. | Petworth | 2009 |
| Calco 3D Ltd | Narberth | 2025 |
| Calco Paper Services Limited | Newquay | 1999 |
| Calculaz Automotive Solutions UK Ltd | Ilford | 2023 |
| Calculus Health Ltd | Loughborough | 2024 |
| Calcut Engineering Ltd | Balerno | 2024 |
| Caldah Innovations Incorporated Ltd | Kington | 2024 |
| Caldan Conveyor Limited | Redcar | 2015 |
| Caldeira Limited | Liverpool | 1996 |
| Caldenstone Limited | London | 2026 |
| Calder and Tate Signs Limited | Glasgow | 2009 |
| Calder Building Services (UK) Limited | West Yorkshire | 2006 |
| Calder Carpets Limited | Thornhill Road | 1982 |
| Calder Chemicals Limited | Kendal | 1979 |
| Calder Clutch (Brighouse) Ltd | Brighouse | 2018 |
| Calder Clutch Company Limited | West Yorkshire | 2003 |
| Calder Coating Limited | Chorley | 2014 |
| Calder Contracts Ltd | Pollington | 2022 |
| Calder Controls Limited | Walsall | 2011 |
| Calder Dyeing Limited | Dewsbury | 1998 |
| Calder Engineering Ltd. | Thurso | 1988 |
| Calder Fabrications Limited | Livingston | 2003 |
| Calder Foods (Manufacturing) Limited | Burton-On-Trent | 2003 |
| Calder Furniture Group Ltd | Ruislip, | 2021 |
| Calder Gates Limited | Mirfield | 2019 |
| Calder Industrial Materials Limited | Chester | 1889 |
| Calder Lifting Services Limited | Huddersfield | 1985 |
| Calder Limited | Worcester | 1980 |
| Calder Metal Spinning Company Ltd | Leeds | 2023 |
| Calder Metal Works Ltd | Todmorden | 2024 |
| Calder Millerfield Limited | | 1925 |
| Calder Offshore Limited | Thurso | 2009 |
| Calder Oils Limited | Wakefield | 1957 |
| Calder Precision Ltd | Halifax | 2025 |
| Calder Screen Limited | Sowerby Bridge | 2025 |
| Calder Screenprint Limited | Elland | 2011 |
| Calder Sheetmetal Limited | West Yorkshire | 2007 |
| Calder Temperature Controls Limited | Elland | 2004 |
| Calder Textiles Limited | Thornhill Road | 1984 |