| Fluid Power Initiatives Limited | Manufacturing | 2009 |
| FM Equine Ltd | Agriculture & fishing | 2023 |
| FOR Heavens Cakes Limited | Manufacturing | 2024 |
| Fyona Bassett Limited | Professional & scientific | 2008 |
| G Ceidiog Hughes Limited | Professional & scientific | 2020 |
| G Jones Farming Ltd | Agriculture & fishing | 2023 |
| G Royles and SON Electrical Contractors Ltd | Construction | 2025 |
| Galltfaenan Holdings Ltd | Financial services | 2025 |
| Gardner Ventures Ltd | Professional & scientific | 2001 |
| Garej M & J CYF | Administrative & support | 2016 |
| Garroway Ventures LLP | | 2021 |
| Gary Catton Haulage Limited | Water & waste | 1995 |
| Gatepost Restaurant Limited | Hospitality | 2024 |
| GJM Engineering Ltd | Professional & scientific | 2020 |
| Gleaming 2017 Ltd | Administrative & support | 2017 |
| Global Select International Limited | Administrative & support | 2018 |
| Glyn Evans Auto Clinic Ltd | Wholesale & retail | 2016 |
| Go Forex Ltd | Professional & scientific | 2018 |
| Go Sumo Ltd | Wholesale & retail | 2021 |
| Goeieman & Co. Ltd | Professional & scientific | 2025 |
| Golden Razor NW Ltd | Other services | 2024 |
| Goliath Media Limited | Information & communication | 2014 |
| Grafvine Ltd | Extraterritorial | 2022 |
| Grantham & Crowe Limited | Manufacturing | 2014 |
| Graphicology Limited | Arts & recreation | 2012 |
| Graphvine Ltd | Extraterritorial | 2022 |
| Green Pixel Software Ltd | Information & communication | 2017 |
| Grocott Contractors Limited | Construction | 2024 |
| Ground & Civils Ltd | Water & waste | 2017 |
| Grove House Resident's Association Ltd | Other services | 2025 |
| Gthr Limited | Hospitality | 2021 |
| Gutter Maintenance & Preventative Roofing Solution (Gmprs) Ltd | Extraterritorial | 2025 |
| Gwynnedd Power Connect Ltd | Administrative & support | 2025 |
| H and C Automotive Ltd | Wholesale & retail | 2021 |
| H M C Consulting (UK) Limited | Administrative & support | 2013 |
| H P Davies CYF | Administrative & support | 2022 |
| H.W Evans CYF | Real estate | 2025 |
| H2 Only Limited | Other services | 2006 |
| Hamfin Ltd | Hospitality | 2022 |
| Happy Nails Denbigh Ltd | Other services | 2025 |
| Harbro House Limited | Professional & scientific | 2001 |
| Harbro House Services Ltd | Administrative & support | 2025 |
| Harveys Solicitors Limited | Professional & scientific | 2017 |
| Haydei Drilling Limited | Construction | 2024 |
| Hendre Aled Holiday Cottages Limited | Hospitality | 2012 |
| Henllan Bakeries UK Limited | Extraterritorial | 2013 |
| Henllan Bread (UK) Limited | Manufacturing | 2007 |
| Hobbsey Limited | Financial services | 2022 |
| Holistically Limited | Health & social care | 2018 |
| Holland Street Holdings Limited | Hospitality | 2024 |
| Home Land Unique Ltd | Wholesale & retail | 2021 |
| Hood Online Ltd | Financial services | 2025 |
| Hosta Communities Limited | Hospitality | 2022 |
| Hothe Fine Kitchens & Furniture Ltd | Wholesale & retail | 2016 |
| Houlton Estates Limited | Real estate | 2026 |
| Humphreys Inspection Ltd | Construction | 2025 |
| Iconsult Technical Limited | Administrative & support | 2015 |
| IE Instinct Ltd | Professional & scientific | 2019 |
| IHS - in HIS Service Ltd | Hospitality | 2018 |
| Innovation Liquidity Partners Ltd | Professional & scientific | 2025 |
| Intercommunications Ltd | Information & communication | 2019 |
| Iptw Holdings Limited | Real estate | 2017 |
| Iptw Limited | Real estate | 2017 |
| Izode Limited | Manufacturing | 2011 |
| J & G Client Development Ltd | Administrative & support | 2008 |
| J R Palin Ltd | Administrative & support | 2022 |
| James Bell Containers Ltd | Wholesale & retail | 2022 |
| JAY Reigns Music Academy Limited | Information & communication | 2021 |
| JAY Reigns Music Limited | Information & communication | 2023 |
| JB Arborists Ltd | Administrative & support | 2025 |
| JB Imaging Solutions Ltd | Health & social care | 2017 |
| JD & DV Roberts Ltd | Agriculture & fishing | 2014 |
| Jdhb Limited | Construction | 2025 |
| Jfyj Real Estate Limited | Real estate | 2023 |
| JG Consulting Limited | Professional & scientific | 2022 |
| JG Trades Ltd | Construction | 2025 |
| Jikibode Ltd | Wholesale & retail | 2026 |
| John G Morris Limited | Agriculture & fishing | 2015 |
| Jones & Graham Accountants Ltd | Professional & scientific | 2015 |
| Jones Berain CYF | Agriculture & fishing | 2003 |
| JRA Building Services Ltd | Construction | 2016 |
| Jurassicplants Nurseries Limited | Agriculture & fishing | 2018 |
| Kalusa(Control) LLP | | 2025 |
| Kaos Roost (Control) LLP | | 2021 |
| Kempton Court Management Company Limited | Real estate | 1989 |
| Kingdom Defence Limited | Manufacturing | 2023 |
| Kurdi (Elephant & Castle) Holdings LLP | | 2024 |
| Kurdi (Madrid) Roost Control LLP | | 2024 |
| Kurdi Family Control LLP | | 2021 |
| Kurdi Group Services Ltd | Administrative & support | 2025 |
| Kurdi Overseas Wealth Control LLP | | 2021 |
| Kurdi Roost Control LLP | | 2024 |
| Kurdi UK Wealth Control Limited | Financial services | 2020 |
| Kwiffs Academy Limited | Education | 2023 |
| Kwiffs Hairless Limited | Other services | 2022 |
| L C Edwards Limited | Transport & logistics | 2021 |
| L J Roofing and Cladding Ltd | Construction | 2024 |
| L J Watkins (N Wales) Limited | Wholesale & retail | 2026 |
| Laffey Williams Property Ltd | Real estate | 2024 |
| Lamb's Garden Enterprise Ltd | Other services | 2017 |