| Ffridd Uchaf Hydro Ltd | Energy | 2018 |
| Ffrydlan Limited | Energy | 2015 |
| Film 15 Productions Ltd | Information & communication | 2007 |
| Fragrant Light Company Ltd | Manufacturing | 2024 |
| Free Ranging Designs Ltd | Manufacturing | 2014 |
| G and M Pryce Limited | Construction | 2003 |
| G M Jones Ltd | Construction | 2023 |
| Gardd Lledfair Ltd | Agriculture & fishing | 2024 |
| Gardens and Homes Ltd | Wholesale & retail | 2023 |
| Garth Holiday Park Limited | Hospitality | 2022 |
| Garthgwynion Estate Limited | Agriculture & fishing | 1955 |
| GE OHL Consultants Ltd | Construction | 2025 |
| George a Tomos - Penseiri: Architects CYF. | Professional & scientific | 2003 |
| Gerddi Glan Dyfi Ltd | Agriculture & fishing | 2025 |
| Glyn Rees & SON Limited | Other services | 2010 |
| Gofod Gwneud Machynlleth Makerspace CIC | Other services | 2022 |
| Good Build Company Ltd | Construction | 2023 |
| Grace & Howe Consulting Engineers Ltd | Professional & scientific | 2022 |
| Grace Crabb and Company Ltd | Wholesale & retail | 2020 |
| Grant Mayhew Ltd | Construction | 2014 |
| Gruber Mann Media Limited | Professional & scientific | 2025 |
| Grŵp EOS CYF | Financial services | 2022 |
| GT Davies Ltd | Construction | 2019 |
| Gwesty Wynnstay CYF. | Hospitality | 2023 |
| GWW Consulting Limited | Administrative & support | 2025 |
| Gwyliau EOS Holidays CYF | Administrative & support | 2022 |
| Hanes Celtica CYF | Arts & recreation | 2003 |
| Heartwood Saunas Ltd | Manufacturing | 2021 |
| Hennighan Limited | Hospitality | 2023 |
| Hermit Crab Coffee Ltd | Hospitality | 2026 |
| Hillfort Leisure Ltd | Extraterritorial | 2020 |
| Holte Homes Ltd | Construction | 2026 |
| Honest Limited | Information & communication | 2004 |
| Hospital Interiors Ltd | Professional & scientific | 2025 |
| Host Savoie Limited | Hospitality | 2005 |
| HWB Cymunedol TAJ Mahal Community Hub CIC | Administrative & support | 2023 |
| Imlk Ltd | Manufacturing | 2019 |
| Impact-Ed Solutions Ltd | Information & communication | 2015 |
| Insight Illustration Limited | Information & communication | 2003 |
| Irie's (Aberystwyth) Limited | Hospitality | 2014 |
| Isambard's Cycles Ltd. | Wholesale & retail | 2013 |
| J H Jones & Sons (Barmouth Calor Centre) Limited | Wholesale & retail | 2008 |
| John Price Williamson Ltd | Extraterritorial | 2024 |
| JPW Construction Limited | Extraterritorial | 2003 |
| Kevin & SUE Geyton Ltd | Hospitality | 2022 |
| Konexit Fleet Ltd | Information & communication | 2024 |
| Korona Home Solutions Limited | Construction | 2019 |
| Leeks & Neeps Ltd | Agriculture & fishing | 2013 |
| Lewis Construction and Renovation Limited | Construction | 2024 |
| Little Perfections Ltd | Wholesale & retail | 2020 |
| Living-Room Experiences Ltd | Hospitality | 2013 |
| Llais Y Goedwig | Other services | 2010 |
| Llety Ceiro Limited | Hospitality | 2013 |
| Lloyds Buses Limited | Transport & logistics | 2013 |
| Lloyds Coaches Limited | Transport & logistics | 2009 |
| Lynbi Ltd | Information & communication | 2015 |
| M and H Ekici Ltd | Hospitality | 2024 |
| M L Evans (Darowen) Limited | Construction | 2015 |
| MAC Shoe Shop Ltd | Wholesale & retail | 2024 |
| Mach Maethlon | Agriculture & fishing | 2012 |
| Mach Taxis Ltd | Transport & logistics | 2015 |
| Machrun Events Ltd | Wholesale & retail | 2022 |
| Machynlleth Car Wash Ltd | Administrative & support | 2023 |
| Machynlleth Community Children's Project Ltd. | Education | 1992 |
| Machynlleth Tabernacle Trust(The) | Arts & recreation | 1986 |
| Maincome Properties Limited | Construction | 2024 |
| Mark William Adey Ltd | Extraterritorial | 2023 |
| Mark William Lloyd-Adey Ltd | Extraterritorial | 2023 |
| MAX Gane Architecture Limited | Professional & scientific | 2021 |
| Mehdi El-Radhi Construction Limited | Construction | 2012 |
| Meirion Mill Woollen Centre Limited | Wholesale & retail | 1963 |
| Meraki Development Consulting Limited | Professional & scientific | 2018 |
| Meydan Kebab Ltd | Hospitality | 2025 |
| MFJ Management Ltd | Households | 2021 |
| MID & West Wales Welding Ltd | Manufacturing | 2012 |
| MID Wales Community Energy Trust | Other services | 2004 |
| MID Wales Fitness C.I.C. | Arts & recreation | 2026 |
| MID Wales Solar Limited | Construction | 2023 |
| Modest Genius Ltd | Information & communication | 2021 |
| Moduron Llewelyn Motors CYF | Extraterritorial | 2025 |
| Moral I.T. C.I.C. | Professional & scientific | 2016 |
| Motorbike Festival Company Limited | Arts & recreation | 2015 |
| MPC Technology Limited | Wholesale & retail | 2019 |
| My Fit Month Ltd | Other services | 2022 |
| Neuadd Goch Farm Limited | Agriculture & fishing | 1999 |
| New Dovey Fishery ASSOCIATION(1929)LIMITED(THE) | Arts & recreation | 1929 |
| NIC Westermann Ltd | Manufacturing | 2015 |
| Nubou Marketing Ltd | Professional & scientific | 2012 |
| Oak Advisory & Resolution Ltd | Professional & scientific | 2025 |
| Oura House Limited | Construction | 2026 |
| P J Baksh Services Ltd | Administrative & support | 2017 |
| Paratus Limited | Administrative & support | 2009 |
| Partneriaeth Pennal Limited | Other services | 2017 |
| Partners in Global Development | Other services | 2007 |
| Paul Standing Tarmacadam Limited | Construction | 1988 |
| Penmaenbach Caravan Park Limited | Hospitality | 1972 |
| Penmaendyfi Limited | Hospitality | 1999 |
| Pint LAB Technologies Ltd | Information & communication | 2022 |
| Plas Einion Management Company Limited | Households | 1997 |
| Plas Llwyngwern Limited | Hospitality | 2009 |