| GE Holmes Limited | Real estate | 2022 |
| Gentle Waves Ltd | Other services | 2025 |
| Germaina House Limited | Health & social care | 2025 |
| Gesindustrial Limited | Administrative & support | 2025 |
| GII Retail Ltd | Wholesale & retail | 2026 |
| Gilbeys Bistro Ltd | Hospitality | 2025 |
| Gill Bradley Limited | Wholesale & retail | 2026 |
| Gill Investment Holdings Ltd | Real estate | 2020 |
| GL Project Services Limited | Construction | 2025 |
| Gledhill Properties Ltd | Real estate | 2021 |
| Gleeson Industrial Solutions Limited | Professional & scientific | 2016 |
| Global Talent Gateway Ltd | Administrative & support | 2025 |
| GLS Financial Ltd | Financial services | 2018 |
| GLS Property Limited | Real estate | 2016 |
| Gnlp Limited | Hospitality | 2016 |
| GNR Joinery Ltd | Construction | 2019 |
| Golden Dragon Vanity Ltd | Other services | 2019 |
| Goldenn Scissors Ltd | Other services | 2024 |
| Gpie Ltd | Manufacturing | 2023 |
| Graften Management Co Ltd | Real estate | 2015 |
| Grand FIR Properties Limited | Households | 2023 |
| Grantully Projects Ltd | Administrative & support | 2026 |
| Graphic Solutions NE Ltd | Manufacturing | 2024 |
| Gray Piping Services Limited | Manufacturing | 2007 |
| Greeves & Sons Ltd | Other services | 2021 |
| Grenfell Club | Health & social care | 2014 |
| GRIPPER135 Limited | Professional & scientific | 2024 |
| GS H&S Services Ltd | Professional & scientific | 2025 |
| Gscoatinginspection Limited | Construction | 2022 |
| Guaranteed Golf Ltd | Arts & recreation | 2026 |
| Guisborough Priory Saddlery Limited | Wholesale & retail | 2006 |
| Gwoodservices: Limited | Energy | 2025 |
| H. Jarvis Ltd | Manufacturing | 1946 |
| H.R.V.B.Scaffolding Limited | Construction | 2025 |
| Hair & Beauty by Kayleigh Ltd | Other services | 2024 |
| Halliwell & Burns Group Limited | Hospitality | 2025 |
| Halls Travel & Training Ltd | Education | 2026 |
| Hamilton Matlock Limited | Information & communication | 2024 |
| Handmade Hampers Ltd | Wholesale & retail | 2015 |
| Hanserve International Ltd | Wholesale & retail | 2019 |
| Hanson Care UK Limited | Extraterritorial | 2019 |
| Harewood View Limited | Health & social care | 2003 |
| Harko Ltd | Education | 2018 |
| Hartlepool Motor Company Ltd | Wholesale & retail | 2016 |
| Hasan Tandoori Limited | Hospitality | 2026 |
| Haswell’S Gardening & Home Improvements Limited | Administrative & support | 2022 |
| Haus-Of-Hibbs Property Limited | Real estate | 2026 |
| Hauxley Consulting Ltd | Extraterritorial | 2023 |
| Hauxley Group Limited | Professional & scientific | 2013 |
| Havo Property Ltd | Real estate | 2021 |
| Hawthorne Holdings NE Limited | Financial services | 2024 |
| Hazelwood Electrical Ltd | Manufacturing | 2019 |
| HCH Industrial Ltd | Professional & scientific | 2024 |
| Healthi Nutrition Limited | Wholesale & retail | 2023 |
| Healy Property Ltd | Real estate | 2025 |
| Hearthstone Cove Ltd | Hospitality | 2024 |
| Heaters Direct Ltd | Construction | 2023 |
| Henry YAU Logistics Ltd | Transport & logistics | 2024 |
| Hesdale International Limited | Extraterritorial | 2024 |
| Heslop and Bliss Investments Limited | Real estate | 2019 |
| HG NDT & Inspection Limited | Professional & scientific | 2024 |
| HH Lettings Ltd | Real estate | 2018 |
| Highland Innkeepers Ltd | Hospitality | 2026 |
| Highview House Investments UK Limited | Real estate | 2022 |
| HK Property Management Ltd | Real estate | 2019 |
| HLB Property Services Ltd | Real estate | 2025 |
| HNM Homes Ltd | Real estate | 2026 |
| HOF HQ Ltd | Wholesale & retail | 2025 |
| Holistic Academy Network Ltd | Administrative & support | 2020 |
| Holme LEA Creations Ltd | Arts & recreation | 2020 |
| Holmes MTE Ventures Limited | Manufacturing | 2021 |
| Homesafe UKK Electrical Services Ltd | Construction | 2025 |
| Homestarters Furniture Limited | Wholesale & retail | 2013 |
| Honeyman Instrument Services Limited | Construction | 2020 |
| Hong's Nail and Beauty Salon Ltd | Other services | 2018 |
| Hoofer & Mortar Holdings LLP | | 2022 |
| Hope Training Club Ltd | Arts & recreation | 2025 |
| House of Aesthetics Redcar Ltd | Other services | 2025 |
| Housekeeping.Esw Limited | Administrative & support | 2024 |
| Howard Marine Ltd | Extraterritorial | 2016 |
| HRP Group Investments Ltd | Real estate | 2022 |
| HSP360 Ltd | Professional & scientific | 2025 |
| Hugo Properties (N.E) Ltd | Real estate | 2020 |
| Hunter Fisheries Ltd | Agriculture & fishing | 2025 |
| Hunter Four Family Holdings Ltd | Real estate | 2020 |
| Hunter Four Partnership LLP | | 2020 |
| Huntsman IFS Polyurethanes Limited | Manufacturing | 1992 |
| Hutchinson Housing Ltd | Real estate | 2023 |
| Huttons North East Limited | Construction | 2009 |
| I & a Cheall Logistical Services Limited | Transport & logistics | 2015 |
| I Love That Car Ltd | Wholesale & retail | 2021 |
| Ibleep Ltd | Information & communication | 2007 |
| ICF Energy Ltd | Other services | 2025 |
| ICF Properties Ltd | Real estate | 2023 |
| ICF Surveys Ltd | Construction | 2021 |
| ICF Travel Ltd | Transport & logistics | 2026 |
| IFP Technical Services Ltd | Professional & scientific | 2022 |
| IJS Properties NE Limited | Real estate | 2024 |
| Imagebarberz Ltd | Other services | 2026 |
| Imaginative Community Events C.I.C. | Education | 2022 |