| Healing Fire Hospital Ltd | Manufacturing | 2023 |
| Health & Safety Training (NE) Limited | Other services | 2017 |
| Health & Safety Training Limited | Administrative & support | 2003 |
| Health Care Revival Solutions Limited | Professional & scientific | 2024 |
| Health Innovation North East and North Cumbria Limited | Health & social care | 2013 |
| Health Safety Security Ltd | Health & social care | 2012 |
| HEALTHASSURED1 Limited | Public administration | 2025 |
| Healthcall Solutions Limited | Health & social care | 2016 |
| Healthcare Electrical Services Limited | Construction | 2026 |
| Healthexglobal Ltd | Administrative & support | 2025 |
| Healthlands Clubs Limited | Arts & recreation | 2003 |
| Healthworks Newcastle | Health & social care | 1994 |
| Healthy Prep Kitchen Limited | Hospitality | 2018 |
| Healthy Smoker Limited | Wholesale & retail | 2014 |
| Healtica Ltd | Wholesale & retail | 2021 |
| Heap Land Partnership LLP | | 2005 |
| Hear Better Limited | Wholesale & retail | 2025 |
| Hear Clear Newcastle Limited | Health & social care | 2025 |
| Heart and Soul Racing Ltd | Administrative & support | 2024 |
| Heartbeats and Milliseconds Limited | Professional & scientific | 2021 |
| Heartbroken to Healed Community Interest Company | Health & social care | 2020 |
| Heat - Team NE Ltd | Construction | 2021 |
| Heat Lions Steelworks CIC | Manufacturing | 2025 |
| Heat North Limited | Professional & scientific | 2023 |
| Heat Pump Solutions North East Limited | Construction | 2015 |
| Heat-On Fire Consultants Limited | Professional & scientific | 2026 |
| HEAT2O North East Limited | Construction | 2023 |
| Heath & Cliff Limited | Professional & scientific | 2022 |
| Heathwell Holdings Ltd | Construction | 2026 |
| Heathwood Apartment Blocks a & B Residents Management Company Limited | Real estate | 2026 |
| Heatmax Ltd | Construction | 2020 |
| Heaton Acupuncture Clinic Limited | Health & social care | 2020 |
| Heaton Assembly Hall Company Limited | | 1919 |
| Heaton Catering Equipment Limited | Wholesale & retail | 2002 |
| Heaton Chiropractic Clinic Limited | Health & social care | 2023 |
| Heaton DES Ltd | Construction | 2026 |
| Heaton Enterprises Limited | Real estate | 1968 |
| Heaton Food Store Ltd | Wholesale & retail | 2022 |
| Heaton Harriers & Athletics Club Limited | Arts & recreation | 2024 |
| Heaton Hawks Football Club Limited | Arts & recreation | 2025 |
| Heaton Management Limited | Households | 2006 |
| Heaton Nails Bar Ltd | Other services | 2023 |
| Heaton Nursery School Limited | Education | 2002 |
| Heaton Park Coachworks Limited | Wholesale & retail | 1989 |
| Heaton Park Store Ltd | Wholesale & retail | 2019 |
| Heaton Property Block Management Limited | Real estate | 2014 |
| Heaton Property Limited | Real estate | 2009 |
| Heaton Property Maintenance Limited | Construction | 2016 |
| Heaton Sandwiches Ltd | Hospitality | 2025 |
| Heaton Stannington AFC (Seniors) Limited | Education | 2023 |
| Heaton Stannington AFC (Social Club) Limited | Education | 2023 |
| Heaton Stannington AFC Car Parks Limited | Administrative & support | 2019 |
| Heaton Stannington AFC Limited | Arts & recreation | 2026 |
| Heaton's Handy Finds Limited | Wholesale & retail | 2025 |
| Heatonpizza Ltd | Hospitality | 2023 |
| Heaven on the Wall Ltd | Hospitality | 2024 |
| Heavenly Sleepzzz Ltd | Wholesale & retail | 2019 |
| Hebburn 1 Ltd | Hospitality | 2023 |
| Hech & MAX Food UK Ltd | Wholesale & retail | 2025 |
| Hecros Limited | Health & social care | 2022 |
| Hecurl Limited | Real estate | 2017 |
| Hedco Building Services Ltd | Construction | 2019 |
| Hedco Global General Trading Ltd | Wholesale & retail | 2025 |
| Hedderick Services Limited | Real estate | 2024 |
| Heddon Property Company Limited | Real estate | 2015 |
| Heddon Stables Limited | Real estate | 2003 |
| Heddon Storage Ltd | Real estate | 2025 |
| Heddon Structures Limited | Professional & scientific | 2020 |
| Hedgehog LAB Holdings Limited | Financial services | 2023 |
| Hedgehog LAB Limited | Information & communication | 2006 |
| Hedges Group Ltd | Wholesale & retail | 2025 |
| Hedgeway Holdco Limited | Administrative & support | 2025 |
| Hedingham & District Omnibuses Ltd. | Extraterritorial | 1965 |
| Hedley Holdings Ltd | Construction | 2020 |
| Hedline Manufacture Ltd | Manufacturing | 2019 |
| Heemah Hair & Accessories Ltd | Wholesale & retail | 2025 |
| Heera Health Care Limited | Health & social care | 2024 |
| HEH Hospitality Ltd. | Hospitality | 2018 |
| Heidi Dollimore Aesthetics Ltd | Health & social care | 2020 |
| Heidi's Coins Ltd | Information & communication | 2025 |
| Heidi's Wuerstl Haus Ltd | Hospitality | 2020 |
| Heirsoft Limited | Information & communication | 2017 |
| HEL Reed & Company Limited | Professional & scientific | 2009 |
| Helai Limited | Wholesale & retail | 2025 |
| Helen Industries Co., Ltd | Real estate | 2012 |
| Helen Jackson Limited | Professional & scientific | 2012 |
| Helicon Alex LP | | 2017 |
| Helios Hyperdock Limited | Construction | 2026 |
| Helios Technology Group Limited | Information & communication | 2024 |
| Helios Volt Limited | Energy | 2023 |
| Heliovratech Ltd | Information & communication | 2025 |
| Helium Miracle 301 Limited | Extraterritorial | 2020 |
| Helium Miracle 303 Limited | Professional & scientific | 2020 |
| Helix Collaborations Limited | Professional & scientific | 2026 |
| Helix House Healthcare Ltd | Health & social care | 2015 |
| Helix House Ltd | Health & social care | 2015 |
| Helix Labs Ltd | Information & communication | 2019 |
| Hello Beautiful Style Ltd | Wholesale & retail | 2025 |
| Hello Story Limited | Professional & scientific | 2018 |
| Helm Works Ltd | Manufacturing | 2026 |