| Grangewood Holdings Limited | Financial services | 1997 |
| Grannex Ltd. | Construction | 2017 |
| Graphene Cables and Wires Ltd | Professional & scientific | 2023 |
| Graphic Arts Printing Systems UK Limited | Administrative & support | 2011 |
| Graynes Close Management Limited | Households | 2014 |
| Great Fashion Limited | Wholesale & retail | 2023 |
| Great Lodge Barns Ltd | Hospitality | 2018 |
| Great Notley Hair & Beauty Ltd | Other services | 2006 |
| Greaves Roofing Consultants Ltd | Professional & scientific | 2025 |
| Green Compass Ltd | Professional & scientific | 2012 |
| Green Onion &Co Ltd | Wholesale & retail | 2025 |
| Green Scaffolding Services Ltd | Construction | 2026 |
| Greenbank Close Management Limited | Households | 1985 |
| Greensleeves Realty Ltd | Real estate | 2025 |
| Greensted Arboricultural Consultancy Ltd | Agriculture & fishing | 2024 |
| Gresham Health Consulting Ltd | Professional & scientific | 2018 |
| Greta (Essex) Limited | Health & social care | 2023 |
| Grey Stag Bathroom’S Ltd | Construction | 2024 |
| Greyfox Talent Ltd | Professional & scientific | 2019 |
| Gridcoregrp Ltd | Construction | 2026 |
| Griffin Dairies Limited | Wholesale & retail | 2009 |
| Griffin Machinery Solutions Limited | Wholesale & retail | 2023 |
| GRL Land Limited | Real estate | 2023 |
| Grnd Fitness Ltd | Arts & recreation | 2026 |
| Groovher Limited | Administrative & support | 2025 |
| Grove 01 Ltd | Real estate | 2024 |
| Grove Construction Consultancy Ltd | Professional & scientific | 2011 |
| Grove London Ltd | Other services | 2019 |
| Grove Smith Limited | Agriculture & fishing | 1968 |
| Grove Smith Turkeys Ltd | Agriculture & fishing | 2014 |
| Grover Barbers Ltd | Other services | 2025 |
| GSL67 Ltd | Transport & logistics | 2023 |
| GSP Operations Ltd | Administrative & support | 2014 |
| GT Hire Services Limited | Administrative & support | 2017 |
| GT Projects Limited | Information & communication | 2013 |
| GT United Homes Ltd | Real estate | 2021 |
| Gtek Electronics Ltd | Wholesale & retail | 2025 |
| Guardian Chauffeurs Ltd | Transport & logistics | 2014 |
| Guardson Hardware (UK) Ltd | Wholesale & retail | 2011 |
| Gulfam Khan Ltd | Wholesale & retail | 2024 |
| Gzyl Transport Limited | Wholesale & retail | 2012 |
| H Lewis & Co Ltd | Professional & scientific | 2003 |
| H Lewis & Co Payroll Services Limited | Professional & scientific | 2008 |
| H R Blah Blah Business Limited | Professional & scientific | 2006 |
| H S B E Ltd | Wholesale & retail | 2003 |
| H&L Facilities Maintenance Services Ltd | Construction | 2024 |
| H&S Environmental Solutions Ltd | Professional & scientific | 2025 |
| H&S Fenster Ltd | Construction | 2019 |
| H.T.Smith(Farms)Limited | Agriculture & fishing | 1952 |
| H2OGO Cleaning Ltd | Administrative & support | 2026 |
| H6 Energy Limited | Energy | 2013 |
| Hackney on Ice CIC | Education | 2025 |
| Hadfelda Hair Limited | Other services | 2015 |
| Hagglunds 4 Hire Limited | Administrative & support | 2003 |
| Hair and Hound (Hastings) Limited | Other services | 2020 |
| Hair Design by Avenues Limited | Other services | 2012 |
| Halcyon Care (Essex) Ltd | Administrative & support | 2023 |
| Haley Portfolio Investments Ltd | Real estate | 2026 |
| Hall Farm Cycles Ltd | Wholesale & retail | 2026 |
| Hallingbury Consulting Ltd | Information & communication | 1997 |
| Hallwell Specialist Construction Ltd | Construction | 2024 |
| Halo Signs (UK) Ltd | Manufacturing | 2012 |
| Hamilton Gardens (Management Company) Limited | Other services | 2013 |
| Handley Homes Limited | Real estate | 2012 |
| Handyvictor Limited | Construction | 2025 |
| Hannanengineering Ltd | Professional & scientific | 2026 |
| Hannants of London Limited | Wholesale & retail | 2008 |
| Harbour Counselling Limited | Health & social care | 2019 |
| Harbour Research Limited | Health & social care | 2024 |
| Hardy Electrics Ltd | Construction | 2018 |
| Hardy International Limited | Financial services | 2019 |
| Hardy Repairs Ltd | Other services | 2025 |
| Hardy's Mortgages Limited | Financial services | 2025 |
| Hare Motors Ltd | Wholesale & retail | 2022 |
| Hari Enterprise Ltd | Wholesale & retail | 2021 |
| Harmony Care Provider Ltd | Health & social care | 2018 |
| Harper Martin Limited | Other services | 1985 |
| Harper Office (Managed Services) Limited | Administrative & support | 2016 |
| Harper Office Limited | Administrative & support | 2020 |
| Harris Heritage & Co Ltd | Real estate | 2026 |
| Harris Property Holdings Ltd | Real estate | 2019 |
| Harry Holding Landscapes Ltd | Administrative & support | 2021 |
| Harry Holding Studio Ltd | Administrative & support | 2019 |
| Hart Fuels Limited | | 1978 |
| Hartsfield Holdings Ltd | Real estate | 2020 |
| Harvey Tooth Care Ltd | Health & social care | 2019 |
| Harvey Wash Limited | Wholesale & retail | 1975 |
| Hasturk Grill Limited | Hospitality | 2024 |
| Hasturk Limited | Hospitality | 2020 |
| Hatfield House RTM Company Limited | Households | 2022 |
| Haven Tree Services Ltd | Administrative & support | 2026 |
| Havendene Limited | Wholesale & retail | 1988 |
| Haydens Saws Limited | Other services | 2003 |
| Haypark Ltd | Real estate | 2025 |
| Hazel Cafe Limited | Hospitality | 2009 |
| HBS Global Consulting Ltd | Information & communication | 2024 |
| HCH Investment Management Limited | Professional & scientific | 2014 |
| Health@Conspiracy Limited | Professional & scientific | 2008 |
| Hearn Electrical Ltd | Construction | 2024 |
| Heath Equestrian Centre Ltd | Education | 2025 |