| Green Room (Quorn) Limited | Wholesale & retail | 2026 |
| Green Sentinel Limited | Professional & scientific | 2021 |
| Green Stay Ltd | Real estate | 2022 |
| Greenfish Productivity Ltd. | Professional & scientific | 2016 |
| Greenhills Construction Ltd | Construction | 2021 |
| Greenleach Properties SS Limited | Real estate | 2015 |
| Greenoak Corporation Limited | Professional & scientific | 1994 |
| Greenoak Management Trust Limited | Financial services | 2016 |
| Greenoak Property Investments Limited | Real estate | 1994 |
| Greensward Consulting Ltd | Professional & scientific | 2025 |
| Greenwoods Enterprises Ltd | Information & communication | 2023 |
| Grenso Ltd | Professional & scientific | 2025 |
| Gresley Park Management Company (Swadlincote) Limited | Administrative & support | 2009 |
| Grey Duck Ltd | Hospitality | 2013 |
| Grey Goose Limited | Extraterritorial | 2013 |
| Grid AI Ltd | Manufacturing | 2022 |
| Griffin Consulting and Investment Limited | Extraterritorial | 2015 |
| Griffin Engines Ltd | Manufacturing | 2024 |
| Griffin Retail Ltd | Hospitality | 2015 |
| GRM Logistics Limited | Transport & logistics | 2024 |
| Groby Brook Investments Limited | Financial services | 2020 |
| Grosik Mini Market Limited | Wholesale & retail | 2017 |
| Grosvenor Homes AD Limited | Real estate | 2006 |
| Groundsman Tools and Supplies LLP | | 2015 |
| Groundsman Tools Limited | Wholesale & retail | 2021 |
| Group O & B Ltd | Transport & logistics | 2025 |
| Group to Deal Ltd | Wholesale & retail | 2022 |
| Grzegorz Szymczak Ltd | Transport & logistics | 2021 |
| GSH Plumbing & GAS Services Ltd | Other services | 2017 |
| GSL Investments Limited | Real estate | 2019 |
| GSM Investment Portfolio Ltd | Other services | 2015 |
| GSM Leisure Ltd | Education | 2024 |
| GSM Tennis CIC | Education | 2023 |
| Gsm-I-Connect CIC | Administrative & support | 2021 |
| GSN Enterprises Limited | Wholesale & retail | 2014 |
| GTI Business Systems Limited | Education | 2022 |
| GTI Performance Limited | Extraterritorial | 2022 |
| Guardian Watch Security Limited | Administrative & support | 2025 |
| Guavaa Partners Limited | Information & communication | 2025 |
| GUD Projects Ltd | Real estate | 2024 |
| Guestline Limited | Professional & scientific | 1991 |
| Gujco India Ltd | Wholesale & retail | 2025 |
| Gullspang Limited | Construction | 2022 |
| Gullwing Racing Support (UK) Ltd | Financial services | 2021 |
| Gulp Meals Ltd | Hospitality | 2026 |
| Gumbo Limited | Information & communication | 2022 |
| GVF Holdings Limited | Financial services | 2024 |
| Gwynedd Garage Doors Ltd | Construction | 2014 |
| Gyld Ltd | Construction | 2025 |
| GZK Ltd | Real estate | 2025 |
| H C James Wealth Management Limited | Financial services | 2002 |
| H J Sock Group Limited | Manufacturing | 1989 |
| H M Research Associates Limited | Mining & quarrying | 2000 |
| H R Cooper Building Limited | Construction | 2018 |
| H&M Martins Properties Limited | Real estate | 2026 |
| H&S Documentation Ltd | Administrative & support | 2025 |
| H.Collington & Sons Limited | Agriculture & fishing | 1956 |
| H.Z. Engineering Limited | Professional & scientific | 2026 |
| HA Construction Developments Ltd | Construction | 2025 |
| Habibi Loughborough Ltd | Hospitality | 2024 |
| Habibi&Razi Limited | Financial services | 2022 |
| Hade Developments Ltd | Real estate | 2025 |
| Hadfield Guns Limited | Wholesale & retail | 2011 |
| Haig House Accountancy Limited | Professional & scientific | 2016 |
| Hailstone Limited | Professional & scientific | 2021 |
| Hailstone Services Limited | Real estate | 2017 |
| Hailstone Sidcup Ltd | Real estate | 2026 |
| Hailstone Solutions Ltd | Real estate | 2022 |
| Hainsworth Consultancy Limited | Health & social care | 2020 |
| Hair by Studio Twenty Ltd | Other services | 2025 |
| Hale Consulting Limited | Administrative & support | 2002 |
| Haliled Property Limited | Real estate | 2011 |
| Hall Croft Beauty Clinic Ltd | Other services | 2017 |
| Hall Farm Consultants Ltd | Professional & scientific | 2000 |
| Hall Financial Services Ltd | Financial services | 2020 |
| Hall Orchard Barrow CE Primary School | Education | 2013 |
| Hallam & Co Accountancy Ltd | Professional & scientific | 2021 |
| Hallmark Properties (Leic) Ltd | Real estate | 2006 |
| Hallson Limited | Manufacturing | 1995 |
| Halo Machinery Limited | Wholesale & retail | 2023 |
| Halo Mini Market Limited | Wholesale & retail | 2025 |
| Halstead Music Limited | Arts & recreation | 2005 |
| Hamal Holdings Limited | Financial services | 2021 |
| Hamilton Gray Consultancy Ltd | Wholesale & retail | 2017 |
| Hamilton Grays Limited | Wholesale & retail | 2011 |
| Hamlets Limited | Real estate | 2003 |
| Hamm Holdings Ltd | Real estate | 2017 |
| Hamm Homes Ltd | Construction | 2020 |
| Hammond Homes Ltd | Construction | 2008 |
| Hamo & H Ltd | Other services | 2025 |
| Hampson Agencies Limited | Other services | 2013 |
| Hamsco Ltd | Real estate | 2018 |
| Hamstow Ltd | Wholesale & retail | 2002 |
| Hands (Cleaners) Limited | Administrative & support | 1970 |
| Hands UP Limited | Administrative & support | 2009 |
| Hanegumus Limited | Hospitality | 2023 |
| Hanford Sports Clubs and Camps Ltd | Other services | 2023 |
| Hanford Tyres Limited | Wholesale & retail | 2020 |
| Hanmay Trading Limited | Wholesale & retail | 2015 |
| Happy Camel Campervans Ltd | Wholesale & retail | 2021 |