| Gold Lion Property Ventures LLP | | 2017 |
| Golden Scissors Banbury Ltd | Other services | 2025 |
| Golden Scissors Wickford Limited | Other services | 2015 |
| Golden Valley Ventures Limited | Administrative & support | 2015 |
| Goldstar Ventures Limited | Other services | 2018 |
| Goldsworthy Business Services Ltd | Administrative & support | 2011 |
| Golf Stuff Ltd | Wholesale & retail | 2022 |
| Golfyard Limited | Real estate | 2013 |
| Good Link Ltd | Hospitality | 2019 |
| Gore Legal Limited | Professional & scientific | 2019 |
| Gorsuch Property Limited | Construction | 2026 |
| Gospodinov Health Ltd | Health & social care | 2017 |
| GP Healthcare Limited | Health & social care | 2019 |
| GR8 Capital Limited | Financial services | 2018 |
| GR8 Tool Hire Ltd | Administrative & support | 2012 |
| Graham Leyin Associates Limited | Professional & scientific | 2006 |
| Grange Farm Limited | Agriculture & fishing | 1988 |
| Grantwork Group Ltd | Administrative & support | 2025 |
| Grass Roots Tree & Garden Services Limited | Administrative & support | 2007 |
| Great Bricett 2023 Ltd | Construction | 2023 |
| Green Barn Cafe Limited | Hospitality | 2022 |
| Green Oasis Jerk Kitchen Ltd | Hospitality | 2022 |
| Green Route Services Ltd | Construction | 2024 |
| Greenforge Machinery Ltd | Wholesale & retail | 2026 |
| Greensted Surveyors Limited | Professional & scientific | 2015 |
| Greenway Entertainment Limited | Information & communication | 2003 |
| Greenway Roofing Ltd | Construction | 2016 |
| Greenwood Mechanical Services Ltd | Construction | 2022 |
| Greg Hall Ltd | Information & communication | 2003 |
| Gregory's Glazing Limited | Other services | 2021 |
| Greynoise Design Limited | Information & communication | 2008 |
| Greystone Consultancy Limited | Information & communication | 1994 |
| Grill and Bark Ltd | Hospitality | 2024 |
| Grinnell Limited | Administrative & support | 2014 |
| Groom Automotive Ltd | Wholesale & retail | 2015 |
| Grooming on Demand Limited | Other services | 2018 |
| Ground 2 Construction Limited | Construction | 2011 |
| Groundwork Contractors Essex Ltd | Construction | 2021 |
| Group Alco Limited | Extraterritorial | 2025 |
| GRP Electrical Services Limited | Construction | 2022 |
| Grundstein Property Developments Limited | Construction | 2025 |
| GS Project Solutions Limited | Construction | 2020 |
| Gscc Services Ltd | Health & social care | 2016 |
| GTR Risk Solutions Limited | Financial services | 2025 |
| Guided Formations Limited | Professional & scientific | 2014 |
| GUL KKM Ltd | Health & social care | 2009 |
| Gulari Food Limited | Hospitality | 2023 |
| Gunn Property Storage Limited | Transport & logistics | 2016 |
| GV Complete Services Ltd | Professional & scientific | 2020 |
| GWY Medical Services Limited | Health & social care | 2022 |
| H & L Scaffold Limited | Construction | 2025 |
| H F B Leisure Ltd | Wholesale & retail | 2026 |
| H&B Residential Lettings Ltd | Real estate | 2025 |
| H. Mallace Interiors Limited | Construction | 1983 |
| H. Smith Plastics Limited | Manufacturing | 1963 |
| Hadfield Close Residents Management Company Ltd | Extraterritorial | 2020 |
| Hadham Management Company Limited | Households | 2026 |
| Hadham Property Management Company Limited | Households | 2023 |
| Hadleigh Enterprises Limited | Wholesale & retail | 1971 |
| Haegen Developments Limited | Administrative & support | 2003 |
| Hailstone Travel Ltd | Transport & logistics | 2000 |
| Hair by Mark Dancer Limited | Other services | 2022 |
| Hair Development (U.K.) Limited | Other services | 1988 |
| Hall Property Lettings Limited | Real estate | 1992 |
| Halls (Wickford) Limited | Wholesale & retail | 1959 |
| Halls of IVY Beauty Academy Limited | Other services | 2010 |
| Hallybone Property Services Ltd | Real estate | 2026 |
| Halosensor Electronics Technology Limited | Professional & scientific | 2001 |
| Halsin Partners Limited | Professional & scientific | 2003 |
| Hamilton Roofing Limited | Construction | 2020 |
| Hammond & WOO Ltd | Wholesale & retail | 2013 |
| Hanningfield Services Limited | Real estate | 1982 |
| Happening Entertainment Limited | Arts & recreation | 2003 |
| Happoli Games Ltd | Manufacturing | 2020 |
| Harborline Limited | Administrative & support | 2022 |
| Harborstone Estates Limited | Real estate | 2025 |
| Hare and Hippo Limited | Wholesale & retail | 2020 |
| Harold Mckenzie Consulting Limited | Professional & scientific | 1999 |
| Harpenden Bespoke Joinery Ltd | Construction | 2022 |
| Harris Active Sports Limited | Arts & recreation | 1993 |
| Harris Scaffolding Limited | Construction | 2018 |
| Harry Deeaio Holdings Limited | Financial services | 2024 |
| Hartingwell Properties Ltd | Administrative & support | 2008 |
| Harvey Bright Consulting Ltd | Real estate | 2021 |
| Harvey Copping & Harrison LLP | | 2009 |
| Harvey Healthcare Alliance Limited | Health & social care | 2025 |
| Haseurope Ltd | Administrative & support | 2007 |
| Hassall Group Ltd | Construction | 2023 |
| Hatch East Ltd | Professional & scientific | 2019 |
| Hatton Direct Ltd | Construction | 2024 |
| Haven Holiday Lets Limited | Real estate | 2023 |
| Havenly Property Ventures Ltd | Real estate | 2017 |
| Hawk MOT Centre Limited | Wholesale & retail | 2008 |
| Hawkes Commercial Contracts Ltd | Administrative & support | 2017 |
| Hawkes Logistics Services Ltd | Transport & logistics | 2021 |
| Hawkes Recruitment Solutions Limited | Administrative & support | 2022 |
| Hawkes Resourcing Group Limited | Administrative & support | 2022 |
| Hawkes Site Services Ltd | Administrative & support | 2020 |
| Hawkins & Co Property Ltd | Real estate | 2025 |
| Hawthorn Lane (Boxford) Management Company Limited | Real estate | 2024 |