| 3D Render Specialists Ltd | Construction | 2004 |
| 4SURE Wales LLP | | 2004 |
| A & B Carpentry & Construction Limited | Construction | 1997 |
| A & H Independent Financial Services Ltd | Financial services | 1996 |
| Aadams Kebab Ltd | Hospitality | 2020 |
| Aberdare Specsavers Limited | Wholesale & retail | 1995 |
| Acacia Carpentry Limited | Professional & scientific | 1999 |
| AL Harethi Limited | Manufacturing | 2025 |
| Alan Evans Motors Ltd | Wholesale & retail | 2003 |
| Allied Aspects Limited | Education | 1993 |
| Amnitec Limited | Manufacturing | 1957 |
| AMV Services Limited | Administrative & support | 2005 |
| Apex Estates (Aberdare) Ltd | Real estate | 2007 |
| Apex Lettings Ltd | Real estate | 2007 |
| Apex Surveyors Ltd | Professional & scientific | 1991 |
| Arthroeze LLP | | 2020 |
| Autosample Limited | | 1988 |
| Axcent Management & IT Services Limited | Construction | 2000 |
| Bargoed Rugby Football Club Limited | Arts & recreation | 1993 |
| Beacons Products Limited | Manufacturing | 1991 |
| Bedwas Software Limited | Information & communication | 1989 |
| Belmount Products Ltd | Construction | 2001 |
| BMJ Properties Limited | Real estate | 1999 |
| Bridgend Trailercraft Limited | Wholesale & retail | 1979 |
| C W Architects Limited | Professional & scientific | 2002 |
| C.J. Bird Transport Limited | Transport & logistics | 2000 |
| Capital Programme Consultancy Ltd | Administrative & support | 2017 |
| Cartridge World Bridgend Ltd | Wholesale & retail | 2004 |
| Cato North Design Limited | Professional & scientific | 2025 |
| Celtic Catering Partnership Limited | Hospitality | 1999 |
| CF Star Nails Ltd | Other services | 2019 |
| Chapel Assets Limited | Construction | 2014 |
| Chisholms of Bargoed Limited | Wholesale & retail | 2003 |
| Chlajo Limited | Financial services | 2025 |
| Codegenix Ltd | Information & communication | 2025 |
| Computing Europe Limited | Manufacturing | 2001 |
| Control Gear (Weldex) Limited | Manufacturing | 1996 |
| Countyoffer Limited | Real estate | 1996 |
| Courie Trading Ltd | Real estate | 1996 |
| Cracked Actors Limited | Other services | 1988 |
| Cresta Mini-Coaches Limited | Transport & logistics | 1999 |
| CWM Care Limited | Health & social care | 2003 |
| Cwmni Amryliw CYF | Information & communication | 1996 |
| D.L.P. Surveyors Ltd | Real estate | 2004 |
| Dabhand Signs Ltd | Manufacturing | 2003 |
| Dare Inglis Products Limited | | 1945 |
| David Hughes Industrial Roller Doors Limited | Manufacturing | 2007 |
| Davies European Service Limited | Transport & logistics | 2003 |
| Davies Homes Limited | Construction | 1979 |
| Davies`S Coaches Limited | Transport & logistics | 2006 |
| Decode SRL Ltd | Real estate | 2025 |
| Design and Supply Limited | Manufacturing | 1994 |
| Direct Business Services (Wales) Limited | Real estate | 2003 |
| DW Builders & Contractors Ltd | Construction | 2024 |
| Ecspress 60 Limited | Transport & logistics | 1998 |
| Eggs & Breads Ltd | Wholesale & retail | 2025 |
| Ellis and Turner Limited | Construction | 2005 |
| Eqwebs Limited | Information & communication | 2003 |
| Exdeal Limited | Administrative & support | 1985 |
| FAB Automation Services Limited | Professional & scientific | 2003 |
| Fern ICT Limited | Information & communication | 2002 |
| FIX My Car - Your Car OUR Parts Ltd | Wholesale & retail | 2020 |
| Franair Limited | Manufacturing | 1998 |
| FSG Tool & DIE Limited | Manufacturing | 1961 |
| G a Carter (1998) Limited | Wholesale & retail | 1998 |
| Gareth Channon Financial Consultancy Limited | Financial services | 2003 |
| Glamorgan Plant Services Limited | | 1979 |
| GM Polystyrene Limited | Manufacturing | 2007 |
| GNE Ltd | Professional & scientific | 2024 |
| Greenlounge Ltd | Wholesale & retail | 2004 |
| Hairport Hair Designers Limited | Other services | 1967 |
| HAN Sing Limited | Hospitality | 2022 |
| Herba Chemicals Limited | Manufacturing | 2025 |
| Homerton Tyre and Rubber Company Limited | | 1926 |
| Howells Coaches Limited | Transport & logistics | 1999 |
| Hunt Construction Limited | Construction | 1996 |
| Ice-It Limited | Manufacturing | 1986 |
| Imajen Services Limited | Other services | 2000 |
| Ingleacre Limited | Real estate | 1990 |
| Iron Cortex Ltd | Wholesale & retail | 2025 |
| J & B Plastering Limited | Construction | 2004 |
| J & P Residential Homes Limited | Health & social care | 2000 |
| J.G. Plant (Hire) Limited | Construction | 1967 |
| James Furniture & Mobility Limited | Wholesale & retail | 2017 |
| JAY & Sons Limited | Wholesale & retail | 2005 |
| John Mccarthy Transport Limited | Transport & logistics | 1980 |
| JW UK Premium Car Ltd | Wholesale & retail | 2011 |
| KCP Plastering & Tiling Limited | | 1989 |
| Knight Manufacturing Group Limited | Professional & scientific | 2007 |
| Knight Precision Tooling Limited | Manufacturing | 2007 |
| Kudos Furniture (UK) Limited | | 1991 |
| Langerson Ltd | Real estate | 2016 |
| Lasers ARE US Limited | Manufacturing | 2001 |
| Laurel Court Associates Limited | Financial services | 2000 |
| Lexion Financial Services Limited | Financial services | 2002 |
| Llanharan Concrete Co.Limited | Manufacturing | 1965 |
| Lloyds Holdings Limited | Real estate | 2000 |
| Longforge Limited | Transport & logistics | 1994 |
| Loucom Limited | Wholesale & retail | 1994 |
| Lounge Products Limited | | 1956 |