| Goldsmith Vehicle Services Ltd | Wholesale & retail | 2026 |
| Goldspink Roofing Ltd | Construction | 2025 |
| Goldstone 2023 Holdings Ltd | Financial services | 2023 |
| Goldstone Recovery Services Ltd | Wholesale & retail | 2017 |
| Goodwins Solutions Ltd | Construction | 2011 |
| Gore Construction Ltd | Construction | 2025 |
| Gosal Residential Limited | Real estate | 2024 |
| Goulding Electrical Services Limited | Construction | 1995 |
| GP Motorcycles Limited | Wholesale & retail | 2001 |
| Gradley Driving Services Ltd | Transport & logistics | 2019 |
| Graduate Talent Match Ltd | Administrative & support | 2023 |
| Graham James Interiors Limited | Construction | 2022 |
| Grand & Victor Lodges (Leigh-On-Sea) Management Limited | Real estate | 1990 |
| Grange Denture Clinic Ltd | Health & social care | 2024 |
| Grannell Holdings Limited | Financial services | 2022 |
| Grasshopper Forensic Planning Solutions Ltd | Construction | 2025 |
| Gravesend Marine Limited | Wholesale & retail | 1983 |
| Grayson Classics Ltd | Wholesale & retail | 2024 |
| GRD GAS & Heating Limited | Manufacturing | 2021 |
| GRD Plastering Limited | Construction | 2011 |
| Great Future Support Limited | Administrative & support | 2018 |
| Green Graffix Installations Ltd | Construction | 2016 |
| Green Power Electrical Maintenance Services Limited | Manufacturing | 2022 |
| Greenfingers Horticulturalists Limited | Administrative & support | 2024 |
| Greenman Studio Limited | Professional & scientific | 2019 |
| Greenplus One Ltd | Hospitality | 2017 |
| Greens and Co. Investments Ltd | Real estate | 2023 |
| Greens Landscapes Limited | Administrative & support | 2003 |
| Greentech Electrical Services Limited | Construction | 2010 |
| Greenwood Construction (Essex) Limited | Construction | 2021 |
| Greg’S Film Construction Ltd | Construction | 2022 |
| Grey 17 Limited | Construction | 2016 |
| Grey Vixen Ltd | Other services | 2024 |
| Grice Property Ltd | Real estate | 2021 |
| Griffair Ltd | Construction | 2026 |
| GRL Powerhouse Ltd | Administrative & support | 2021 |
| Grla Services Ltd | Professional & scientific | 2018 |
| GRM Clearance Ltd | Water & waste | 2026 |
| Group Interiors Limited | Construction | 2007 |
| Grove Light Haulage Ltd | Transport & logistics | 2012 |
| GSB Technologies Ltd | Construction | 2020 |
| GST Property Ltd | Real estate | 2024 |
| GT 4X4 Limited | Extraterritorial | 2015 |
| GT Breakers UK Limited | Wholesale & retail | 2014 |
| GT H&S Consultants Limited | Professional & scientific | 2017 |
| GT Technical Services Limited | Information & communication | 2016 |
| GTC Electrical Ltd | Construction | 2023 |
| GTV Contracts Limited | Construction | 2011 |
| Guild Trading Ltd | Hospitality | 2014 |
| Guthlac Care Limited | Health & social care | 2025 |
| GW Consultancy (London) Limited | Administrative & support | 2014 |
| GWS Construction Ltd | Construction | 2022 |
| H & H Houses Limited | Real estate | 2007 |
| H & T Automotive Limited | Wholesale & retail | 2026 |
| H M Payroll Services Limited | Administrative & support | 2009 |
| H Medical Aesthetics Ltd | Health & social care | 2025 |
| H&H Management Consulting Ltd | Professional & scientific | 2018 |
| H&Hughes Property Limited | Construction | 2024 |
| H&L Family Limited | Professional & scientific | 2025 |
| H&L Security Ltd | Administrative & support | 2019 |
| Hades Plumbing & Heating Services Ltd | Construction | 2018 |
| Hadleigh Drycleaners Limited | Other services | 2021 |
| Hadleigh Financial Management Limited | Construction | 2002 |
| Hadleigh Generation Limited | Construction | 2022 |
| Hadleigh Grace Church | Other services | 2016 |
| Hadleigh Hand Car Wash Ltd | Administrative & support | 2020 |
| Hadleigh Heating & Plumbing Ltd | Administrative & support | 2007 |
| Hadleigh Used Cars Limited | Wholesale & retail | 2016 |
| Hadlow Ground Engineering Services Ltd | Professional & scientific | 2014 |
| Hadron Consulting Ltd | Professional & scientific | 2014 |
| Hair Oasis by Lorna Tomlin Ltd | Other services | 2020 |
| Hakerley Properties Ltd | Real estate | 2025 |
| Hall Bros.(Groundwork) Limited | Construction | 2004 |
| Halo AV Limited | Construction | 2008 |
| Hamiltonmore Limited | Real estate | 2023 |
| Hammerhead Tools Ltd | Wholesale & retail | 2020 |
| Hance Groundworks Limited | Construction | 2025 |
| Handyman on Sea Ltd | Construction | 2019 |
| Hang UP Limited | Wholesale & retail | 2018 |
| Hanks Electrical Services Ltd | Construction | 2022 |
| Haqq Catering Ltd | Hospitality | 2023 |
| Haralan (IVY House) Limited | Real estate | 1997 |
| Harcord Limited | Administrative & support | 2009 |
| Hardings Interiors Limited | Manufacturing | 2013 |
| Hardware Concept & Software Development Ltd | Professional & scientific | 2014 |
| Hardy Sherwood (Special Projects) Limited | Construction | 2000 |
| Hardy Sherwood Properties Limited | Construction | 1989 |
| Haresland Consultants Limited | Construction | 2021 |
| Harriets Cuisine Limited | Hospitality | 2008 |
| Harrington GAS Solutions Ltd | Professional & scientific | 2023 |
| Harris Lodge Management Company Limited | Real estate | 1987 |
| Harrison Plumbing & Heating Ltd | Construction | 2021 |
| Harry Ellis Limited | Information & communication | 2024 |
| Hart Capital Limited | Households | 2019 |
| Hart Power Limited | Wholesale & retail | 2012 |
| Harts Lane (Block E) Management Co. Limited | Households | 1984 |
| Harts Lane (Block F) Management Company Limited | Households | 1985 |
| Hashim Traders Limited | Wholesale & retail | 2023 |
| Hasina Ltd | Professional & scientific | 2017 |
| Haus Pictures Ltd | Professional & scientific | 2012 |