| 25 Victoria Square Residents Association Limited | Households | 2004 |
| 38 Cecil Street Management Company Limited | Real estate | 2006 |
| 46 Plymouth Road Management Company Limited | Real estate | 1998 |
| 58 Broad Street Barry Management Company Limited | Hospitality | 2006 |
| 82QR Management Company Limited | Households | 2022 |
| A & S Dinning Properties Ltd | Real estate | 2022 |
| AAC Electrical Services Limited | Construction | 2005 |
| Abbott Consultancy Wales Limited | Professional & scientific | 2004 |
| Abel Tech Ltd | Professional & scientific | 2007 |
| Actuate (Management Services) Limited | Professional & scientific | 2006 |
| Aircraft Tool Hire Limited | Manufacturing | 2014 |
| ALL Care (South Wales) Limited | Health & social care | 2002 |
| AT Environmental (Wales) Limited | Construction | 2007 |
| Atlas Graphics Limited | Manufacturing | 2002 |
| Barry Osteopathy Limited | Health & social care | 2025 |
| Big Fabric Ltd | Wholesale & retail | 2017 |
| Blonde Ambition Media Ltd | Wholesale & retail | 2017 |
| Brand Connections Trading Ltd | Wholesale & retail | 2020 |
| Brian Royson Mayne Ltd | Professional & scientific | 2022 |
| Britton Bros. Limited | Construction | 2006 |
| Bryan Wadham Properties Ltd | Real estate | 2017 |
| C & B Cleaning Services Ltd | Administrative & support | 2017 |
| C Kenchington Ltd | Professional & scientific | 2017 |
| C.L. Bayley Properties Ltd | Real estate | 2022 |
| C.S. Boxall Limited | Construction | 2005 |
| CAE SYR Dafydd Flats Management Company Limited | Real estate | 1983 |
| Camel Associates Ltd. | Financial services | 2018 |
| Cardiff Airport Services Limited | Transport & logistics | 2013 |
| Cardiff International Airport Limited | Transport & logistics | 1986 |
| Cardiff Knee Surgery Limited | Health & social care | 2009 |
| Carhys Developments Limited | Professional & scientific | 2003 |
| Carymor Limited | Real estate | 2005 |
| Casa Martinez Limited | Wholesale & retail | 1992 |
| Cats Eyes Driving School Limited | Education | 2000 |
| Caversham IT Solutions Limited | Information & communication | 2015 |
| Chaanel Stud Ltd | Agriculture & fishing | 2014 |
| Chamberlain Moss King Architecture Ltd | Professional & scientific | 1999 |
| Charnwood Holdings Limited | Real estate | 2001 |
| Complete Solar Services Ltd | Construction | 2023 |
| Confused-R-Us Limited | Information & communication | 2007 |
| Curley Locks Locksmiths Cardiff Ltd | Other services | 2022 |
| D. Davies & SON Limited | Manufacturing | 2002 |
| Dantaag (Holdings) Limited | Wholesale & retail | 2013 |
| Dantaag Limited | Manufacturing | 1999 |
| Delta Intermediaries Ltd | Financial services | 2020 |
| Denton Construction and Maintenance Limited | Construction | 2003 |
| DMT Martial Arts Tuition Ltd | Education | 2019 |
| Doghill Property Management Ltd | Real estate | 2019 |
| Donald Maxwell Ltd. | Other services | 2018 |
| DR Gwen Adey Ltd | Health & social care | 2022 |
| DR Nimish Shah Ltd | Health & social care | 2014 |
| DTL Solutions Ltd | Other services | 2022 |
| Ellis & Green Construction Ltd | Construction | 2017 |
| EPC Energy Consultancy Services Ltd | Professional & scientific | 2017 |
| Executive Cover Limited | Professional & scientific | 1985 |
| Fabric Clearance Ltd | Wholesale & retail | 2020 |
| Ffenics Group Limited | Administrative & support | 2024 |
| Flo's Bar and Event Coordination Ltd | Hospitality | 2026 |
| Forward (Wales) Limited | Health & social care | 2005 |
| Francis M. Brooks Ltd | Health & social care | 2018 |
| Friendly Owners Community Team (F.O.C.T.) Limited | Real estate | 2001 |
| Funky-Retro Ltd | Wholesale & retail | 2021 |
| G. E. Bousie Ltd | Other services | 2017 |
| Gardeners of the Galaxy Ltd | Administrative & support | 2019 |
| Gareth Stewart Consulting Limited | Construction | 2002 |
| Georgia-Lee Properties Ltd | Real estate | 2025 |
| GMB Services Group Ltd | Construction | 2022 |
| Go Commercial Holdings Limited | Financial services | 2017 |
| Grasam Limited | Wholesale & retail | 1983 |
| Greener Ways Services Limited | Administrative & support | 2006 |
| Gundersen Enterprises Limited | Manufacturing | 1978 |
| H. Kendall Properties Ltd | Real estate | 2020 |
| Head Office Hairdressers Ltd | Other services | 2017 |
| Helen Bowen Education Consultancy Ltd. | Education | 2013 |
| Herbert R Thomas Limited Liability Partnership | | 2006 |
| Highlight Window Cleaning (a. Evangelista) Limited | Administrative & support | 2003 |
| Hook Signs Ltd | Administrative & support | 2023 |
| Hourihan Limited | Professional & scientific | 2002 |
| Houston Shutters Ltd | Construction | 2021 |
| HRA (Accounting) Limited | Professional & scientific | 2011 |
| Hughes and Elliot Ltd | Professional & scientific | 2000 |
| IMP Studios Limited | Arts & recreation | 2025 |
| Infinity Creations Limited | Wholesale & retail | 2018 |
| Inn-House Automatics Limited | Arts & recreation | 1983 |
| International Aerospace Asia (UK) Limited | Professional & scientific | 1999 |
| International Democracy and Governance Consultancy Ltd | Professional & scientific | 2007 |
| IT Mortgages and Finance Limited | Financial services | 2004 |
| Ivor Properties Company Limited | Real estate | 2021 |
| J. Jones and SON (Dairies) Limited | Wholesale & retail | 1961 |
| JEM Property Services Limited | Construction | 2007 |
| JKS Jewellers Ltd | Wholesale & retail | 2016 |
| JLH Courier Services Ltd | Transport & logistics | 2022 |
| John Price & Co Limited | Extraterritorial | 2003 |
| Julie Paul Furniture Interiors Ltd | Wholesale & retail | 2020 |
| Keltros Limited | Information & communication | 2004 |
| Kerslake Couriers Ltd | Transport & logistics | 2020 |
| L.E.L. (Properties) Limited | Real estate | 1989 |
| Land Matters Limited | Professional & scientific | 2003 |
| LEC . Check. Limited | Manufacturing | 1999 |
| Leung and Chun Limited | Hospitality | 2002 |