| 2 Clarence House Management Ltd | Households | 2018 |
| 4M Estates SW Ltd | Real estate | 2025 |
| Abbey Line Limited | Professional & scientific | 1920 |
| Adenhart (Wales) Limited | Construction | 2010 |
| Affiniti Ltd | Real estate | 2002 |
| Agnitio Accountants Ltd | Professional & scientific | 2013 |
| Ahmad Estates Ltd | Real estate | 2003 |
| Ahmed Properties Services Limited | Real estate | 1998 |
| Aqua Crescent Developments Ltd | Construction | 2016 |
| Azure Crescent Developments Ltd | Real estate | 2015 |
| Azure Rentals Ltd | Real estate | 2018 |
| B P U Limited | Professional & scientific | 1999 |
| Bidkey Limited | Households | 1984 |
| Boba Fett Ltd | Arts & recreation | 2019 |
| Brynmenyn Care Home Ltd | Health & social care | 2025 |
| Cardiff Retail Stores Ltd | Wholesale & retail | 2025 |
| Celtic Recovery Limited | Wholesale & retail | 2001 |
| Cerise Crescent Developments Ltd | Construction | 2016 |
| Charnbury Properties Limited | Construction | 1979 |
| Crimson Crescent Developments Ltd | Real estate | 2016 |
| Cryo Skin and Bone Ltd | Health & social care | 2024 |
| David's Desserts Limited | Wholesale & retail | 1964 |
| Dunderdale Consultants Ltd | Other services | 1996 |
| E.Ashton(Fishmongers)Limited | Wholesale & retail | 1920 |
| ECO2 Management Services Limited | Administrative & support | 2013 |
| Emerald Residence Ltd | Construction | 2025 |
| Excel Medicines Limited | Health & social care | 2025 |
| Graphite ROD Ltd | Real estate | 2019 |
| Grimes Engravers Limited | Administrative & support | 2002 |
| Gwent Management Services Limited | Transport & logistics | 1998 |
| Highway & Industrial Equipment Limited | Wholesale & retail | 1982 |
| I D Management Systems Limited | Professional & scientific | 1996 |
| I.D. Centres Limited | Administrative & support | 1997 |
| Ivory Crescent Developments Ltd | Construction | 2016 |
| JSM Management Group Ltd | Administrative & support | 2021 |
| Justin Time Limited | Professional & scientific | 1986 |
| Karim Developments Ltd | Real estate | 2014 |
| Khaliq Facial Aesthetics Ltd | Health & social care | 2020 |
| Laniakea Estates Ltd | Real estate | 2014 |
| Lluniau Lliw CYF | Information & communication | 1988 |
| M & a Conservation & Prosthetics Limited | Health & social care | 2005 |
| M & S Properties(Wales) Ltd | Real estate | 2015 |
| Maple House Investments Ltd | Real estate | 2020 |
| Mazaka Ltd | Construction | 2013 |
| Megasave (Wales) Ltd | Wholesale & retail | 2018 |
| Metabolic Clinic Limited | Health & social care | 2016 |
| Miltongreen Limited | Real estate | 1990 |
| Mindmed Limited | Health & social care | 2016 |
| Newfoundland Management Ltd | Households | 2014 |
| Nippers Futures Limited | Financial services | 2023 |
| Oakmeadow Village Management Co Limited | Households | 2002 |
| Onyx Crescent Estates Ltd | Hospitality | 2021 |
| Paleolog Swainson Limited | Real estate | 1979 |
| Palpatine Developments Ltd | Construction | 2016 |
| Penygarth Management Ltd | Households | 2018 |
| Renco Construction Ltd | Construction | 2013 |
| RMO Commercial Holdings Ltd | Real estate | 2025 |
| SA1 U.K Ltd. | Wholesale & retail | 2015 |
| Scdesignbuild Ltd | Construction | 2013 |
| Silver Crescent Estates Ltd | Real estate | 2003 |
| Something Bigger Productions Ltd | Information & communication | 2020 |
| Standoff Pictures Ltd | Information & communication | 2019 |
| Step in Style Newport Ltd | Wholesale & retail | 2024 |
| Strata Florida Screenwriting Ltd | Arts & recreation | 2024 |
| Surgical Inclusions Limited | Manufacturing | 2007 |
| Task Estates Ltd | Real estate | 2014 |
| THE Independent General Practice Limited | Health & social care | 2004 |
| THE Swansea Hostel Company Limited | Real estate | 2016 |
| THE Three R'S Group Ltd | Real estate | 2023 |
| TON Media CYF | Professional & scientific | 2014 |
| TW Medicare Ltd | Health & social care | 2006 |
| UJ Medical Imaging Solutions Limited | Professional & scientific | 2015 |
| Universal Chemicals Limited | Manufacturing | 1986 |
| Unknwnai Ltd | Information & communication | 2025 |
| Walls Truck Services Limited | Wholesale & retail | 2002 |
| Welsh EGG (Porthcawl) Ltd | Agriculture & fishing | 2013 |
| Westside Foods Ltd | Hospitality | 2019 |
| Willow Hedges Limited | Hospitality | 2003 |
| Zolto Ltd | Information & communication | 2009 |