| Dragon Vale Services Ltd | Construction | 2023 |
| Drive Home Limited | Households | 2025 |
| Drone Perspective Ltd | Professional & scientific | 2026 |
| DTR Surveyors Limited | Real estate | 2019 |
| Duffield Trading Ltd | Wholesale & retail | 2020 |
| Dufia Films Ltd | Information & communication | 2011 |
| EAL Catering Ltd | Hospitality | 2022 |
| ECJ Carpentry Ltd | Manufacturing | 2024 |
| ED NOK Ltd | Real estate | 2022 |
| Edenvale Garden Services Ltd | Administrative & support | 2025 |
| Eglwys Housing Ltd | Construction | 2022 |
| Eipc Glamorgan Limited | Professional & scientific | 2025 |
| Emma Homes Limited | Real estate | 1999 |
| Evermore Farm Limited | Agriculture & fishing | 2025 |
| Farmers Pantry Ltd | Wholesale & retail | 2011 |
| FC Management Ltd | Administrative & support | 2021 |
| Fine Rolling Media Ltd | Information & communication | 2020 |
| Flux Climbing Holds Ltd | Manufacturing | 2022 |
| Forbes Performance Ltd | Other services | 2021 |
| Future Sustainable Dynamics Ltd | Professional & scientific | 2024 |
| Fuzzy Picture Limited | Information & communication | 2006 |
| Garage Girls UK Limited | Wholesale & retail | 2021 |
| Gareth Tregidon CYF | Financial services | 2026 |
| Garrett Carpentry (Cardiff) Ltd | Information & communication | 2013 |
| GAS Services Direct Ltd | Construction | 2026 |
| GEM Engineering Ltd | Manufacturing | 2022 |
| Geoff Neuss Services Ltd | Education | 2024 |
| Glamorgan Voluntary Services | Other services | 2015 |
| Global People Power Ltd | Other services | 2012 |
| Go Direct School of Motoring Limited | Education | 2016 |
| Go Physio (UK) Limited | Health & social care | 2008 |
| Goodfellas Barbers Llantwit Major Limited | Other services | 2018 |
| Great Frampton Farm Ltd | Agriculture & fishing | 2023 |
| Great Frampton Management Company Limited | Households | 2020 |
| Greystone Services Ltd | Other services | 2015 |
| Groovy Auto Centres Ltd | Wholesale & retail | 2018 |
| Groovy Lettings Ltd | Wholesale & retail | 2009 |
| Groovy Limited | Real estate | 2003 |
| GSA Online Limited | Education | 2020 |
| Gwyrdd Pest Solutions Limited | Administrative & support | 2024 |
| Hang Fire Limited | Hospitality | 2015 |
| Happy Trails Dog Walking Service Ltd | Other services | 2025 |
| Harrom Ltd | Professional & scientific | 2019 |
| Hemp Alternatives Wales Limited | Water & waste | 2018 |
| Hide at ST Donats Ltd | Hospitality | 2015 |
| High Society Boutique Limited | Wholesale & retail | 2019 |
| Highendlabels Ltd | Wholesale & retail | 2024 |
| Highfield Builders (South Wales) Limited | Construction | 2003 |
| Highfield Garden Services Limited | Construction | 1999 |
| Highfield Hire Company Limited | Administrative & support | 1999 |
| Horsesolicitor Limited | Professional & scientific | 2010 |
| HOW Energy Ltd | Professional & scientific | 2022 |
| Howell Insurance Services Limited | Financial services | 2003 |
| HR Spectrum Limited | Administrative & support | 2013 |
| Idcw Ltd | Education | 2025 |
| INNOV8IVE Film & TV Ltd | Extraterritorial | 2010 |
| Inside OUT Men’S Grooming & Wellbeing Limited | Wholesale & retail | 2024 |
| James Oliver Kitchens Limited | Wholesale & retail | 2014 |
| Jason Carl Morgan Limited | Manufacturing | 2011 |
| Jastta Homes Limited | Real estate | 2019 |
| Jlvm Ltd | Administrative & support | 2018 |
| JP Access Solutions Ltd | Construction | 2022 |
| Just BE Products Ltd | Wholesale & retail | 2018 |
| Justin Time Management Limited | Hospitality | 2000 |
| K&B Aircraft Recovery Specialists Limited | Manufacturing | 2025 |
| Kamlin Property Limited | Real estate | 2022 |
| Keylam Ltd | Administrative & support | 2025 |
| Keylam Safety Limited | Public administration | 2024 |
| Kingfisher Developments (Wales) Limited | Construction | 1990 |
| Kireus Ltd | Information & communication | 2019 |
| Kj's TAP N ALE Ltd | Hospitality | 2026 |
| Krome Investments Limited | Real estate | 2015 |
| KT Facility Management Ltd | Construction | 2021 |
| Kurdish Barbers 2023 Limited | Other services | 2023 |
| L S Landscaping Ltd | Administrative & support | 2020 |
| L3O Consulting Ltd | Professional & scientific | 2026 |
| Lavender Properties Limited | Real estate | 2022 |
| Lefel 2 CYF | Information & communication | 1996 |
| Lewis Landscapes Services Ltd | Administrative & support | 2024 |
| LFR Consultancy Ltd | Administrative & support | 2025 |
| Lifestyle TEC Ltd | Wholesale & retail | 2015 |
| Linden Illustration Limited | Wholesale & retail | 2023 |
| Little Ferns Kids Club Ltd | Health & social care | 2025 |
| Little Nunna's Pizza Ltd | Hospitality | 2021 |
| Little Nunna’S Bakehouse Ltd | Hospitality | 2025 |
| Little Oak Investments Ltd | Real estate | 2020 |
| Llandow Caravan Park Limited | Hospitality | 2007 |
| Llantwit Major & District Riding Club Limited | Education | 2019 |
| Llantwit Major AFC Ltd | Arts & recreation | 2022 |
| Llantwit Major Self Storage Ltd | Real estate | 2016 |
| LM Group (Holdings) Ltd | Financial services | 2017 |
| LM Prop Ltd | Construction | 2018 |
| Lmbf Ltd | Construction | 2021 |
| LMR Resourcing Limited | Administrative & support | 2019 |
| Lodgepole Pine Limited | Administrative & support | 2017 |
| Lola Trumpet Ltd | Transport & logistics | 2025 |
| London House (Llantwit Major) Management Company Limited | Households | 2020 |
| Lubna Indian Takeway Limited | Hospitality | 2026 |
| Lubnas (Cardiff) Ltd | Hospitality | 2016 |
| M&L White Property Management Ltd | Construction | 2026 |