| 5 George Street Management Company Limited | Households | 2005 |
| Aberconwy Car and Van Hire Limited | Administrative & support | 1991 |
| B.H. Davies (Real Estate) Limited | Real estate | 1975 |
| Book Corner Limited | Wholesale & retail | 2006 |
| City Dental Practice Limited | Extraterritorial | 2010 |
| Colwyn Bay Masonic Hall Company,Limited(The) | Real estate | 1921 |
| Credent Commercial Insurance Ltd | Financial services | 2004 |
| E.Poppleton & SON Limited | Manufacturing | 1961 |
| ERW Wastad Services Limited | Professional & scientific | 2004 |
| Evans Hotel Ltd. | Hospitality | 1998 |
| Fibrax Limited | Manufacturing | 1911 |
| Great Orme Mines Limited | Arts & recreation | 1989 |
| Greenfield Garage (Colwyn Bay) Ltd | Real estate | 2007 |
| Healthstream Properties Ltd. | Real estate | 1998 |
| Helen Parry-Jones Ltd | Arts & recreation | 2011 |
| J Mckernon & Co Ltd | Professional & scientific | 2007 |
| J.G.Gibbons & Sons Limited | Professional & scientific | 1961 |
| Jsat Automation Inc | | 2018 |
| Llandudno Flats Ltd | Real estate | 2002 |
| Llangollen Golf Catering Limited | Hospitality | 2024 |
| M & N Roofing Limited | Construction | 2004 |
| Maldivesweb Limited | Hospitality | 2006 |
| Meithrinfa Ogwen CYF | Health & social care | 2004 |
| Moel Developments Limited | Construction | 2005 |
| Mythos One Ltd | Hospitality | 2026 |
| Parciau Caravans Limited | Hospitality | 1961 |
| Premier Metal Works (Llandudno Junction) Limited | Wholesale & retail | 2002 |
| R H Specialist Cars Limited | Wholesale & retail | 2007 |
| Rhys Williams Properties Limited | Professional & scientific | 2001 |
| Ricky Fryer Construction Service Ltd | Other services | 2019 |
| Romeo Ristorante Italiano Ltd | Hospitality | 2007 |
| Romeo Ristorante Ltd | Hospitality | 2026 |
| Sbjj Group Properties Ltd | Real estate | 2021 |
| ST. Davids College Trust | Education | 1978 |
| Stange & Co. Limited | Hospitality | 1959 |
| THE Traditional Welsh Sausage Company Limited | Manufacturing | 1999 |
| Tip-It Limited | Water & waste | 2007 |
| Vaughan Street Management Limited | Households | 1988 |
| World Care (Wales) Limited | Water & waste | 1992 |