| Green PEA Mortgages Ltd | Financial services | 2017 |
| Green Stem Limited | Wholesale & retail | 2021 |
| Greenacreallen Properties Limited | Real estate | 2023 |
| Greencodemedia Limited | Administrative & support | 2023 |
| Greenhills Flats Limited | Households | 2005 |
| Greenlight Contact Limited | Other services | 2010 |
| Greenloop Advisory Ltd | Professional & scientific | 2026 |
| Greenzone Facilities Management Limited | Administrative & support | 2007 |
| Greenzone Software Development Limited | Information & communication | 2020 |
| Greetings Galore Ltd | Wholesale & retail | 2013 |
| Gregory Properties Limited | Real estate | 2022 |
| Greyhurst Holdings Ltd | Real estate | 2025 |
| Greystone Real Estate Ltd | Real estate | 2017 |
| Greystones Projects Limited | Real estate | 2019 |
| Greywell Advisory Limited | Professional & scientific | 2025 |
| Griffins Group Ltd | Financial services | 2024 |
| Grind Films Ltd | Information & communication | 2023 |
| Grist for the Mill Ltd | Information & communication | 2020 |
| GRJ Consulting Services Limited | Professional & scientific | 2015 |
| GRM Hospitality Services Ltd | Public administration | 2023 |
| GRM Motorservices Ltd | Wholesale & retail | 2022 |
| Grove & Rufford Woodlands Limited | Agriculture & fishing | 1993 |
| Grove Auto Electrical Services Limited | Wholesale & retail | 2015 |
| GS & PA Whitaker Limited | Professional & scientific | 1990 |
| GS Site Solutions Ltd | Construction | 2025 |
| Gsax Investments Ltd | Financial services | 2023 |
| GSD Business Solutions Limited | Professional & scientific | 2022 |
| Gstwb Limited | Construction | 2018 |
| GT (Nottingham) Ltd | Other services | 2020 |
| GT Race & Trailers Limited | Manufacturing | 2014 |
| GT Recovery Ltd | Transport & logistics | 2025 |
| GTA Derby Limited | Professional & scientific | 2015 |
| Gta-Landscape Limited | Professional & scientific | 2016 |
| Gtown Property Limited | Real estate | 2019 |
| Guardian Vehicle Logistics Ltd | Wholesale & retail | 2021 |
| Gull-Faxi Limited | Manufacturing | 1997 |
| Gunstone of Counsel Limited | Professional & scientific | 2019 |
| Gunther Care Ltd | Health & social care | 2025 |
| Gusto Construction Limited | Construction | 1998 |
| Gusto Developments Limited | Construction | 1997 |
| Gusto Estates Limited | Real estate | 2014 |
| Gusto Group Limited | Professional & scientific | 1992 |
| Gusto Homes (Collingham) Limited | Construction | 2017 |
| Gusto Homes (Easthorpe) LLP | | 2019 |
| Gusto Homes Limited | Construction | 2006 |
| Gusto Ventures Limited | Hospitality | 1998 |
| Guthrie Jones Property Ltd | Real estate | 2022 |
| GUY ST John Taylor Associates Limited | Professional & scientific | 1987 |
| GVW Limited | Financial services | 2012 |
| H & L Gallagher Properties Ltd | Real estate | 2015 |
| H & LP Consultants Ltd | Professional & scientific | 2012 |
| H &W Consulting Limited | Information & communication | 2023 |
| H and H Flooring Limited | Wholesale & retail | 2003 |
| H D Narrowboats Limited | Manufacturing | 2022 |
| H J Jones Ltd | Real estate | 2024 |
| H Parker Catering Limited | Hospitality | 2024 |
| H Walker Joinery Ltd | Construction | 2024 |
| H&G Solutions Ltd | Wholesale & retail | 2017 |
| H&J Cook Ltd | Construction | 2006 |
| H4 Infotech Ltd | Information & communication | 2015 |
| Hade European Site Services Limited | Construction | 2003 |
| Hadleigh Park Services Limited | Professional & scientific | 2017 |
| HAI BO CON Holdings Ltd | Real estate | 2025 |
| Haiduc Ltd | Transport & logistics | 2019 |
| Haigh and Haigh Properties Limited | Professional & scientific | 2019 |
| Haigh Limited | Professional & scientific | 2006 |
| Haiku of Horror Ltd | Wholesale & retail | 2023 |
| Hair Design by Pina Ltd | Other services | 2016 |
| Hairy Toms Forest School CIC | Public administration | 2026 |
| Halam Inns Limited | Hospitality | 2016 |
| Halam Salon Limited | Other services | 2023 |
| Hale (Newark) Limited | Hospitality | 2021 |
| Hale Court Management Company Limited | Households | 2006 |
| Halfway Home Dog Rescue Ltd | Agriculture & fishing | 2011 |
| Hall Borders Holdings Limited | Hospitality | 2024 |
| Hall Financial Acquisitions Ltd | Real estate | 2025 |
| Hall Purchase Associates Limited | Professional & scientific | 2025 |
| Hallam Farms Limited | Agriculture & fishing | 2017 |
| Hallam's Painting Limited | Construction | 2016 |
| Halo Bloodstock Limited | Agriculture & fishing | 2021 |
| Halo Livery Limited | Agriculture & fishing | 2019 |
| Halo Newark Limited | Other services | 2020 |
| Halo Polo Academy Limited | Arts & recreation | 2022 |
| Halo Solutions Ltd | Administrative & support | 2014 |
| Halt Equestrian Ltd | Wholesale & retail | 2025 |
| HAM Media Ltd | Information & communication | 2018 |
| Hampsons Group Limited | Professional & scientific | 2014 |
| Hampsons Investments Limited | Financial services | 2022 |
| Hand Held Pc's Ltd | Extraterritorial | 2002 |
| Hand-E-Pix Limited | Extraterritorial | 2008 |
| Handa Training & Development Ltd | Education | 2021 |
| Handheld Solutions Limited | Extraterritorial | 2013 |
| Handley House Limited | Professional & scientific | 2014 |
| Handley House Property Limited | Real estate | 2018 |
| Handmadepizzaandkebab Limited | Hospitality | 2022 |
| Handy Clear Limited | Transport & logistics | 2025 |
| Handy Network Ltd | Construction | 2025 |
| Handystaff Ltd | Construction | 2012 |
| Hangoutz Ltd | Arts & recreation | 2022 |
| Hanko Software Ltd | Information & communication | 2022 |