| 1 CPM Ltd | Other services | 2018 |
| 411 Technical Solutions Ltd | Information & communication | 2020 |
| 46 Coffee House Ltd | Hospitality | 2018 |
| A Williams Contract Services Limited | Construction | 2009 |
| A. Morgan Groundworks Ltd | Construction | 2019 |
| A1 Total Security Ltd | Administrative & support | 2023 |
| Aberpennar Consulting Limited | Construction | 2001 |
| Absolute Biomedical Ltd | Health & social care | 2021 |
| Absolute Training & Assessing Limited | Administrative & support | 2009 |
| Aeroresponse Holdings Limited | Manufacturing | 2011 |
| AG1LE Limited | Information & communication | 2015 |
| AJ Edwards Property Services Limited | Construction | 2019 |
| AKG UK Limited | Manufacturing | 1998 |
| Alaan Williams Hair Experts Ltd | Other services | 2024 |
| Alfit Commercial Ltd | Construction | 2016 |
| ALG Electrical Limited | Manufacturing | 2005 |
| Allan Davies & SON JCB Hire Ltd | Agriculture & fishing | 2019 |
| Alpine Land Surveyors Limited | Construction | 2008 |
| Amreed Limited | Health & social care | 2011 |
| Arrow Polybags Limited | Manufacturing | 2006 |
| Ashley Jones Hair Ltd | Other services | 2017 |
| Astrix Integrated Systems Limited | Information & communication | 2001 |
| Autumn 2 Summer AC Limited | Energy | 2017 |
| Autumn 2 Summer Vent Limited | Construction | 2017 |
| Axolotl Technologies Ltd | Information & communication | 2017 |
| Bar.None (Salons) Limited | Other services | 2021 |
| Bar.None Limited | Other services | 2018 |
| Bespoke Education (Services) Limited | Education | 2011 |
| Beverstock Ltd | Manufacturing | 1984 |
| Beverstock Saws Ltd | Professional & scientific | 2015 |
| Bradleys Coffee Limited | Hospitality | 2000 |
| Brands Built for People Limited | Wholesale & retail | 2026 |
| BRO TAF Local Medical Committee Limited | Other services | 2008 |
| Brynawel Garden Centre Limited | Wholesale & retail | 1980 |
| Business Bright Limited | Professional & scientific | 2011 |
| Capel Homes Ltd | Real estate | 2013 |
| Cardiff Gate Surgical Ltd | Administrative & support | 2022 |
| Cathgil Holdings Limited | Real estate | 1998 |
| Centre for Sustainability | Professional & scientific | 2020 |
| Century Web Design Ltd | Information & communication | 2011 |
| Cirrus Nine Ltd | Information & communication | 2013 |
| Claudio Cernat (Tenby) Limited | Hospitality | 2019 |
| Computer Recruiter Limited | Administrative & support | 1987 |
| Cornerstones Training Solutions Limited | Professional & scientific | 2010 |
| Cosh Holdings Ltd | Financial services | 2025 |
| CWM Catering Ltd | Hospitality | 2019 |
| CWM Consultancy Limited | Administrative & support | 2018 |
| DEE JAY Llantrisant Limited | Wholesale & retail | 1979 |
| DR Sustainability Limited | Information & communication | 2022 |
| Dslm Developments Ltd | Real estate | 2019 |
| DT Two Limited | Wholesale & retail | 2011 |
| Emergency Locksmiths Cardiff Ltd | Other services | 2018 |
| Enterprise House (Wales) Ltd | Extraterritorial | 2009 |
| Facet Filtration UK Limited | Professional & scientific | 1983 |
| Fast Track Flooring Limited | Construction | 2014 |
| Fitness Interactive Ltd | Other services | 2017 |
| Fizzboxcom Limited | Administrative & support | 2018 |
| Forest Tea Rooms Limited | Hospitality | 2025 |
| G W Risk Consultants Ltd | Financial services | 2014 |
| G.P.H.I.T (Integrated Services) Ltd | Construction | 2006 |
| G15 Ltd | Arts & recreation | 2024 |
| GP UK Support Services Ltd | Administrative & support | 2016 |
| Gwynne Commercials Limited | Wholesale & retail | 2025 |
| Harley Kane Construction Limited | Manufacturing | 2016 |
| Harvey Baker Limited | Professional & scientific | 2020 |
| HD & ST Properties Ltd | Real estate | 2023 |
| Hydro Brake Limited | Manufacturing | 2001 |
| IJB Motors Ltd | Extraterritorial | 2019 |
| Imspex Diagnostics Limited | Manufacturing | 2011 |
| Infinite Kitchens & Bathrooms Limited | Wholesale & retail | 2014 |
| Isocertain Ltd | Information & communication | 2026 |
| Isoo Fast Food Ltd | Hospitality | 2022 |
| J&P Retail Limited | Wholesale & retail | 2021 |
| JDH Accountants & Business Advisers Ltd | Professional & scientific | 2005 |
| JDH Training & Consultancy Services Limited | Information & communication | 2008 |
| Jj&R Capital Ltd | Financial services | 2022 |
| Jobsinwales Ltd | Professional & scientific | 2004 |
| Jons Properties Limited | Real estate | 1996 |
| JRC Projects Ltd | Administrative & support | 2011 |
| JWP Business Ltd | Wholesale & retail | 2025 |
| K. and E. Upholstery Limited | Manufacturing | 1996 |
| Keepin Electrics Limited | Administrative & support | 2022 |
| KHL Logistics Limited | Transport & logistics | 2004 |
| KOC Kebab Ltd | Hospitality | 2025 |
| Landtech Geophysics Limited | Administrative & support | 2013 |
| Lawn and Power Limited | Wholesale & retail | 2016 |
| Leabold Financial Management Holdings Limited | Financial services | 2012 |
| Leabold Financial Management Limited | Financial services | 2004 |
| Legals Direct Holdings Limited | Administrative & support | 2019 |
| Legals Direct Limited | Administrative & support | 2007 |
| Licensed Premises Supplies Limited | Administrative & support | 2004 |
| Lilo's Retail Ltd | Wholesale & retail | 2023 |
| Lilos Handmade Ltd | Manufacturing | 2020 |
| Llews Holdings Limited | Real estate | 2016 |
| Lundregan Electrical Ltd | Construction | 2017 |
| Magnus Melius Limited | Professional & scientific | 2025 |
| Mark Franks Limited | Construction | 2006 |
| Michelle Taylor Ltd | Professional & scientific | 2021 |
| Navaris Ltd | Administrative & support | 2026 |
| Open Moove Limited | Information & communication | 2024 |