| Apostle Drinks Ltd | Wholesale & retail | 2024 |
| Atexinspect Ltd | Information & communication | 2020 |
| Atom PR CYF | Professional & scientific | 2005 |
| Babinogion Menai CYF | Health & social care | 2011 |
| Belle Developments (NW) Limited | Construction | 2022 |
| Blast Shield Ltd | Real estate | 2022 |
| Blue Olive Rhosneigr Ltd | Hospitality | 2024 |
| Bodelwyddan Residential Care Limited | Health & social care | 2019 |
| Boteco Limited | Hospitality | 2011 |
| Burnell's Holyhead Limited | Real estate | 2003 |
| Cafe Notos Limited | Hospitality | 2022 |
| Cuming Consulting Limited | Professional & scientific | 2020 |
| Dylan Thomas Literary Works Limited | Extraterritorial | 2018 |
| Eddie 2001 Limited | Real estate | 2018 |
| Edge Inclusion Partners CIC | Education | 2013 |
| Edmondson Endodontics Ltd | Health & social care | 2010 |
| Eryri Medical Limited | Health & social care | 2009 |
| Firedog Creative CIC | Agriculture & fishing | 2026 |
| Funsport Limited | Arts & recreation | 2020 |
| Gemini (Anglesey) Limited | Professional & scientific | 2014 |
| GER Y MOR Limited | Real estate | 2021 |
| Gilbert Gertrude Limited | Real estate | 2021 |
| GMS Garden Machinery Limited | Other services | 2015 |
| Goodwin Commercial Property LLP | | 2017 |
| Green Banana Marketing Limited | Professional & scientific | 2010 |
| Griffri CYF | Real estate | 2021 |
| Homemoney Limited | Financial services | 2006 |
| HTS Compliance Ltd | Professional & scientific | 2024 |
| HTS Controls Limited | Other services | 2011 |
| HTS Engineering Group Limited | Other services | 2011 |
| HTS Safety Solutions Limited | Other services | 2011 |
| I-Ingenuity Ltd | Information & communication | 2023 |
| Independent Health Assessments Ltd | Administrative & support | 2014 |
| JP Madden Engineering Ltd | Professional & scientific | 2020 |
| LDP Investments Ltd | Real estate | 2017 |
| Legalok Limited | Professional & scientific | 2014 |
| Lion Rocks Conservation Company Limited | Extraterritorial | 2015 |
| Llwydiarth Limited | Professional & scientific | 2014 |
| Llys Llewelyn Ltd | Hospitality | 2016 |
| Meithrinfa Babinogion Day Nursery Limited | Health & social care | 2008 |
| Meithrinfa Ffalabalam CYF | Health & social care | 2009 |
| Mezze 40 Ltd | Hospitality | 2022 |
| Mundell Robinson Projects Limited | Real estate | 2018 |
| My Scaffolding Services Limited | Extraterritorial | 1990 |
| Njameson Properties Ltd | Real estate | 2021 |
| P G Davies Limited | Professional & scientific | 2014 |
| PEN Y Clip Limited | Professional & scientific | 2014 |
| Peris Properties Limited | Real estate | 2018 |
| Philosoph Limited | Professional & scientific | 2012 |
| Porth Crigyll Management Company Limited | Hospitality | 2008 |
| Pots of Style Limited | Administrative & support | 2020 |
| Quadra Ventures Limited | Real estate | 2015 |
| Redmond Electrical Solutions (N.W.) Limited | Construction | 2014 |
| Redmond Electrical Solutions Limited | Construction | 2010 |
| Redmond Energy Solutions Ltd | Construction | 2022 |
| Renegade Developments Limited | Real estate | 2005 |
| Rhos Building Ltd | Construction | 2013 |
| Rhosneigr Sports Club | Arts & recreation | 2021 |
| Rhosneigr Storage CYF | Transport & logistics | 2025 |
| Romany Electrical Limited | Construction | 2024 |
| Sandy Mona CYF | Hospitality | 2026 |
| Sandymount House Limited | Hospitality | 2017 |
| Sandymount House Rhosneigr Limited | Hospitality | 2020 |
| Scaldwell Limited | Wholesale & retail | 2018 |
| SHELF2006 Limited | Wholesale & retail | 2018 |
| Sissuite Ltd | Other services | 2015 |
| Sophie Wheeler Accountants Limited | Professional & scientific | 2012 |
| Standing Stones Limited | Professional & scientific | 2014 |
| TBAY61 Ltd | Real estate | 2017 |
| Th!Nk Rhosneigr CIC | Education | 2021 |
| THE Anglesey Seaweed Company Limited | Agriculture & fishing | 2019 |
| THE Sourdough School Limited | Hospitality | 2013 |
| THE Surf Cafe Rhosneigr Limited | Hospitality | 2021 |
| Tides Reach Developments Ltd | Real estate | 2017 |
| Timothy Potts Sculpture Limited | Arts & recreation | 2012 |
| TY HEN Holiday Park Ltd | Hospitality | 2015 |
| Tyn-Y-Felin Quarry(Anglesey)Co.Limited | Real estate | 1970 |
| Vanessa Kimbell Limited | Arts & recreation | 2016 |
| W B Surveyors Ltd. | Professional & scientific | 2011 |
| Warren Point Rhosneigr (Management) Ltd | Real estate | 2018 |
| Wave Property Holdings Limited | Hospitality | 2019 |
| Webb Custom Designs Ltd | Professional & scientific | 2011 |
| Wile OUT West Ltd | Arts & recreation | 2024 |
| WSK Haulage Limited | Transport & logistics | 2018 |
| WUF a DUB Ltd | Other services | 2026 |
| Y Morfa Ltd | Hospitality | 2008 |