| ABS (Wales) Limited | Construction | 2013 |
| AJC Medical Secretary Services Ltd | Professional & scientific | 2022 |
| ALS Managed Services (Topco 2026) Limited | Financial services | 2026 |
| Aquila Training Services Limited | Administrative & support | 2005 |
| AT the Bench Ltd | Manufacturing | 2011 |
| Atdbio Limited | Manufacturing | 2004 |
| Awol Networks Ltd | Information & communication | 2023 |
| Batt Holdings Limited | Financial services | 2025 |
| Batt Homes Ltd | Real estate | 2021 |
| Batt Investments Limited | Real estate | 2025 |
| Bergstrom (Europe) Limited | Manufacturing | 1989 |
| Bergstrom Holdings (Europe) Limited | Manufacturing | 2013 |
| Caerphilly Business Club CIC | Information & communication | 2024 |
| Caerphilly Electrical Services Limited | Construction | 2008 |
| CPL 68 Ltd | Hospitality | 2026 |
| Cyri TY 8 Ltd | Hospitality | 2019 |
| Dolphin Swim School Caerphilly Limited | Arts & recreation | 2010 |
| Dragon Soft Drinx Ltd | Hospitality | 2009 |
| Einfinity Hosting Limited | Information & communication | 2008 |
| Elysium Cymru Ltd | Health & social care | 2008 |
| Evolve Corporate Limited | Professional & scientific | 2004 |
| FLAVOURS8 Ltd | Hospitality | 2023 |
| Focused Recruitment (Perms) Limited | Administrative & support | 2018 |
| Focused Recruitment Group Limited | Real estate | 2016 |
| Full Charge Performance Ltd | Wholesale & retail | 2021 |
| Gaffa Coffee Limited | Wholesale & retail | 2017 |
| Gaffa Property Investments Ltd | Real estate | 2017 |
| Gaffaccinos Catering Limited | Wholesale & retail | 2017 |
| GJ Professional Cleaning Consultancy Ltd | Administrative & support | 2024 |
| H D Adcock (Nelson) Limited | Other services | 2005 |
| H D Adcock Holdings Limited | Professional & scientific | 1962 |
| Igt-R Ltd | Wholesale & retail | 2018 |
| Impact Centre for Training Ltd | Education | 2011 |
| JM Selection Ltd | Administrative & support | 2023 |
| Penybryn Engineering Limited | Manufacturing | 2004 |
| Pink Self Storage Limited | Real estate | 2016 |
| Pink Storage Holdings Limited | Financial services | 2025 |
| Precision CNC Parts Ltd | Manufacturing | 2020 |
| Quick Staff UK Ltd | Administrative & support | 2013 |
| R & a Facilities Limited | Administrative & support | 2021 |
| R & a Properties (South Wales) Limited | Construction | 2019 |
| Revive Commercial Limited | Real estate | 2025 |
| Revive Resi Limited | Real estate | 2026 |
| Roberts & Co Properties Ltd | Real estate | 2023 |
| Role Play Hood Ltd | Hospitality | 2024 |
| Sian Clarke Legal Services for Children | Real estate | 2006 |
| Spirit Hair Team Limited | Other services | 2005 |
| Stellar Financial Planning Ltd | Financial services | 2024 |
| THE Contemporary Group Ltd | Wholesale & retail | 2020 |
| Therese Gray Legal Services for Children | Professional & scientific | 2010 |
| Total Mechanics Ltd | Wholesale & retail | 2023 |
| Two Shot Social Ltd | Hospitality | 2023 |
| Vantastec Limited | Manufacturing | 2006 |
| Weston Timber Ltd | Wholesale & retail | 2021 |
| Ystrad Service Centre Ltd | Wholesale & retail | 2020 |