| Gascareservices (South Cave) Ltd | Construction | 2022 |
| Gbelux Limited | Real estate | 2003 |
| Geenix Sawmills Limited | Manufacturing | 2010 |
| GEO. Jessop & Sons Ltd | Extraterritorial | 2021 |
| GG Anaesthetic Services Limited | Health & social care | 2021 |
| GIA HUA Ltd | Hospitality | 2025 |
| Gibco Estates Limited | Real estate | 2025 |
| Gibco Property Limited | Real estate | 2020 |
| Gibco Transport Limited | Transport & logistics | 2019 |
| Gibson, Bishop & Co., Limited | Wholesale & retail | 1972 |
| Giritanmohjai Ltd | Real estate | 2018 |
| Girtan Limited | Health & social care | 2015 |
| GJ Landscape Solutions Limited | Administrative & support | 2015 |
| Glamet Ltd | Hospitality | 2025 |
| Globetrade Deluco UK Ltd | Extraterritorial | 2021 |
| Golf Catering Services Limited | Hospitality | 2024 |
| Good Life Organics Limited | Wholesale & retail | 2000 |
| Goodwin Table Tennis Club | Arts & recreation | 2018 |
| Goole Samaritan Society(Incorporated)(The) | Other services | 1914 |
| GP & R Harper Limited | Agriculture & fishing | 2003 |
| Grange Partnership (UK) LLP | | 2008 |
| Grange Partnership Limited | Professional & scientific | 2020 |
| Granite Offers Ltd | Manufacturing | 2023 |
| Gras (UK) Limited | Hospitality | 2013 |
| Great Britain Radio Ltd | Information & communication | 2017 |
| Green Care Homes Limited | Health & social care | 2010 |
| Green Park Commercial Limited | Real estate | 2020 |
| Greenland Seeds Limited | Wholesale & retail | 2015 |
| Greenlight Sports Management Ltd | Arts & recreation | 2016 |
| Greenwood & Ford Limited | Construction | 1982 |
| Group Monument Ltd | Wholesale & retail | 2011 |
| GS Surgical Ltd | Health & social care | 2022 |
| Guiding Light Solutions Ltd | Information & communication | 2025 |
| Guru Brothers Investments Limited | Real estate | 2024 |
| Guy-Vihaan Healthcare Limited | Health & social care | 2015 |
| GWC Site Services Ltd | Construction | 2024 |
| H Walker Contracting Ltd | Construction | 2025 |
| H. & D. Moor (Farmers) Limited | Agriculture & fishing | 1962 |
| Hammond Homes (Aldbrough) Ltd | Construction | 2026 |
| Hammond Homes (Immingham) Ltd | Construction | 2026 |
| Hammond Homes (Kingfisher Rise) Ltd | Construction | 2026 |
| Hammond Homes (Lincs) Ltd | Construction | 2023 |
| Hammond Property Holdings Ltd | Real estate | 2025 |
| Hancox Bros Ltd | Agriculture & fishing | 2021 |
| Hancox Counselling and Collections Ltd | Financial services | 2007 |
| Happy Doodles Ltd | Professional & scientific | 2026 |
| Harlock Consultancy Ltd | Professional & scientific | 2015 |
| Harman's On-Site Services Limited | Hospitality | 2003 |
| Harol Properties Ltd | Real estate | 2025 |
| Harold Sergeant and Sons Limited | Agriculture & fishing | 1963 |
| Harrison Blake Properties Ltd | Real estate | 2021 |
| Harrison-Lock Family Butchers Ltd | Manufacturing | 2021 |
| Haseke Limited | Other services | 2019 |
| Hashmani Consultancy Limited | Health & social care | 2009 |
| Haven Classic and KIT Cars Limited | Manufacturing | 2007 |
| Hawkieshaw Ltd | Health & social care | 2025 |
| Hawthorne Kennels Ltd | Other services | 2024 |
| Haystack Leads Ltd | Water & waste | 2025 |
| HBS Property Services Limited | Hospitality | 2001 |
| HCE Agriculture Limited | Information & communication | 1977 |
| HCF NO 1 Limited | Financial services | 2014 |
| Health, Safety & Outage Solutions Ltd | Professional & scientific | 2017 |
| Heat Pumps to Go Ltd | Extraterritorial | 2022 |
| Hemmingford Ltd | Real estate | 2018 |
| Heritage Commercial Finance Limited | Financial services | 1972 |
| Hessle Development Company Limited | Construction | 2006 |
| Hessle Restaurant Ltd | Hospitality | 2024 |
| Hills Car Care Limited | Wholesale & retail | 2016 |
| Hiyer Properties Ltd | Real estate | 2021 |
| Hodges Haulage Ltd | Transport & logistics | 2003 |
| Holbeach Buildings LLP | | 2005 |
| Holts Store Ltd | Wholesale & retail | 2023 |
| Holts UK Caravan Holidays Ltd | Hospitality | 2023 |
| Hoods Homes Ltd | Real estate | 2022 |
| Horncastle Group PLC | Construction | 1964 |
| Horncastle Homes Limited | Construction | 1988 |
| Horncastle Properties Limited | Real estate | 1986 |
| Horndean Limited | Manufacturing | 2007 |
| Hortiglaze Limited | Construction | 2009 |
| Host DU Jour Ltd | Administrative & support | 2007 |
| Hotbox International Limited | Manufacturing | 2006 |
| HOUR9 Ltd | Arts & recreation | 2025 |
| House of VOY Ltd | Other services | 2026 |
| Housetech (Yorkshire) Limited | Professional & scientific | 2006 |
| Howard Johnson Ltd | Construction | 2014 |
| Howdenshire Limited | Real estate | 1999 |
| Humber Clean Limited | Administrative & support | 2018 |
| Humber Home Tech Ltd | Construction | 2021 |
| Humber Retired Greyhounds CIC | Other services | 2024 |
| Humber Tyre Maintenance Limited | Wholesale & retail | 2014 |
| Humberside Co-Operative Development Agency Limited | Administrative & support | 1985 |
| Hunsley Christian Youth Trust Ltd | Education | 2009 |
| Hydrogen R Ltd | Construction | 2019 |
| Hydrotec Industrial Services Ltd | Water & waste | 2016 |
| Hydrotec Industries Ltd | Water & waste | 2025 |
| Hydrotec Plant & Machinery Ltd | Wholesale & retail | 2025 |
| Hygeno Ltd | Manufacturing | 2010 |
| HYI Limited | Real estate | 2020 |
| I Will IT Ltd | Professional & scientific | 2019 |
| I2IMCA Limited | Other services | 2006 |