| Groom&Bloom Pet Services Ltd | Other services | 2025 |
| Group 479 Ltd | Real estate | 2025 |
| Growhy Green Garden Ltd | Wholesale & retail | 2018 |
| Growing Store Ltd | Wholesale & retail | 2021 |
| GRS Performance Ltd | Wholesale & retail | 2022 |
| Grymula Transport Limited | Transport & logistics | 2017 |
| GS Hampers Ltd | Wholesale & retail | 2018 |
| GT Flooring HX Ltd | Construction | 2020 |
| GTB Roofing (Thorne) Limited | Construction | 2021 |
| GTB Roofing Limited | Construction | 2016 |
| GTD Entertainment Ltd | Wholesale & retail | 2020 |
| Guardian Clean Solutions Ltd | Administrative & support | 2023 |
| Guardian Elite Ltd | Administrative & support | 2025 |
| Guildford Pathology Ltd | Health & social care | 2023 |
| Guitarooze Limited | Wholesale & retail | 2021 |
| Gulam Haji Limited | Health & social care | 2023 |
| Gunes (SN) Ltd | Hospitality | 2018 |
| Gunness Pump Services Limited | Water & waste | 2016 |
| Gusti Expert Driver Solutions Ltd | Transport & logistics | 2026 |
| GWF Machining Services Limited | Professional & scientific | 2018 |
| GWF Management Services Limited | Professional & scientific | 2010 |
| GWS Engineers Limited | Manufacturing | 1978 |
| GWS Vacuum Equipment Limited | Administrative & support | 1984 |
| Gyansun Limited | Construction | 2003 |
| Gynae 4 U Limited | Health & social care | 2019 |
| H & H Commercial Management Ltd | Construction | 2026 |
| H Barker & Sons Haulage Ltd | Transport & logistics | 2019 |
| H Holding Co Ltd | Administrative & support | 2023 |
| H Lewith Medical Ltd | Health & social care | 2024 |
| H Properties and Investments Limited | Real estate | 2022 |
| H&Aa Brothers Limited | Households | 2026 |
| H&J 2 Ltd | Hospitality | 2026 |
| H&K Rental Properties Ltd | Real estate | 2023 |
| H. H. James & SON Limited | Agriculture & fishing | 1955 |
| H.A.G Exports Ltd | Wholesale & retail | 2024 |
| H.A.G Property Ltd | Real estate | 2026 |
| H.G. Holdings Limited | Professional & scientific | 2015 |
| H.G. Homes (Scotter) Limited | Construction | 2020 |
| H.G. Sites (DSA3) Limited | Construction | 2020 |
| H.G. Sites (DSA4) Limited | Extraterritorial | 2021 |
| H.P. Bramhill & Company Limited | Agriculture & fishing | 1950 |
| Hadez Engineering Ltd | Professional & scientific | 2026 |
| Hadleigh Development Limited | Construction | 1972 |
| Hair by Jodie & Co Ltd | Other services | 2021 |
| Hair by Kirby Blythe Ltd | Other services | 2022 |
| Hairapist Gulshan Limited | Other services | 2025 |
| Haji ALI Halal Meat Ltd | Wholesale & retail | 2024 |
| Halfpenny Cottage Ltd | Manufacturing | 2018 |
| Halkon Farms Limited | Professional & scientific | 2024 |
| Hall Needham Limited | Professional & scientific | 2013 |
| Halliwell Commercial Limited | Professional & scientific | 2022 |
| Hallmark Farming Limited | Agriculture & fishing | 1920 |
| Halloween Party Online Ltd | Wholesale & retail | 2024 |
| Hallsons Motors Ltd | Wholesale & retail | 2022 |
| Halo Forklifts Limited | Professional & scientific | 2023 |
| Halo Homes Group Ltd | Health & social care | 2022 |
| Hamilton Press Holdings Limited | Financial services | 2021 |
| Hamilton Press Limited | Arts & recreation | 2018 |
| Hamilton Property Managment Ltd | Real estate | 2024 |
| Hamno Property Development Ltd | Construction | 2025 |
| Hampton House Care Services Ltd | Health & social care | 2025 |
| Hamstead Medical Limited | Health & social care | 2022 |
| Hanaa H Limited | Health & social care | 2024 |
| Hancp Ltd | Administrative & support | 2021 |
| Hand & Simspon Ltd | Wholesale & retail | 2026 |
| Hanzan Limited | Health & social care | 2023 |
| Hapi Home Development Ltd | Construction | 2025 |
| Happy Hippo Junior Ltd | Wholesale & retail | 2018 |
| Happy Trucker Ltd | Transport & logistics | 2018 |
| Happyfeet Preschool Penguins Limited | Education | 2025 |
| Hardwire Electronics Ltd | Wholesale & retail | 2019 |
| Hariff Lane Parks Ltd | Hospitality | 2021 |
| Hariya Homes Ltd | Construction | 2024 |
| Harland Farm Hair Limited | Other services | 2026 |
| Harlequin Office Furniture Holdings Limited | Financial services | 2021 |
| Harlequin Office Furniture Limited | Manufacturing | 1991 |
| Harlequin Trustees Limited | Financial services | 2025 |
| Harold Todd Painting & Decorating Limited | Construction | 1998 |
| Harrier Engineering Holding Limited | Manufacturing | 2017 |
| Harris Fish Ltd | Hospitality | 2021 |
| Harrison Fish Ltd | Wholesale & retail | 2009 |
| Harrisons Laser Technology Limited | Manufacturing | 2000 |
| Hartlepool Limited | Other services | 2019 |
| Harvey's Rest Limited | Real estate | 2026 |
| HAS 17 Ltd | Hospitality | 2025 |
| HAS Timber Ltd | Wholesale & retail | 2020 |
| Hashtagselfieparty Ltd | Wholesale & retail | 2024 |
| Have a Nice Car Park Ltd | Administrative & support | 2019 |
| Haven Measure Limited | Professional & scientific | 2025 |
| Havenmoor Consults Limited | Information & communication | 2025 |
| Haverings Consulting Limited | Information & communication | 2022 |
| Hawkserve Limited | Administrative & support | 2018 |
| Haycos Properties Ltd | Real estate | 2021 |
| Haydock Heating Limited | Construction | 2025 |
| Haywood Lunn & Allen Limited | Professional & scientific | 2017 |
| HB1 Holdings Limited | Financial services | 2026 |
| HBP Systems Limited | Information & communication | 1988 |
| Headarrow Ltd | Information & communication | 2025 |
| Healing Hill Limited | Health & social care | 2025 |
| Health and Wealth Place Ltd | Wholesale & retail | 2026 |