| Helvetic Reserve Limited | Wholesale & retail | 2026 |
| HEM Holdings Limited | Administrative & support | 2017 |
| Hembo. Ltd | Wholesale & retail | 2022 |
| HEN & Hops Trading Ltd | Hospitality | 2020 |
| Henderson Environmental Services Ltd | Water & waste | 2014 |
| Henderson Hot TUB Maintenance Ltd | Manufacturing | 2021 |
| Hendersons Accountants (NE) Ltd | Professional & scientific | 2017 |
| Hendersonserv LP | | 2017 |
| Henkar Associates Ltd | Health & social care | 2025 |
| Henkar Properties Ltd | Real estate | 2025 |
| Henley Grange Management (Wallsend) Limited | Real estate | 2006 |
| Hennamehappy Ltd | Arts & recreation | 2023 |
| Hennyrock Ltd | Other services | 2022 |
| Henry Morgan Ophthalmic Opticians Limited | Wholesale & retail | 1989 |
| Henson Consultancy Limited | Professional & scientific | 2018 |
| Henson Developments Ltd | Real estate | 2024 |
| Henson Fisher Care Developments Ltd | Construction | 2021 |
| Henson Fisher Care Group Ltd | Health & social care | 2021 |
| Henson Healthcare Limited | Extraterritorial | 2011 |
| Henson Holiday Cottage Management Ltd | Real estate | 2022 |
| Henson Land Company Limited | Real estate | 2012 |
| Henson Motor Group Limited | Wholesale & retail | 2001 |
| Henson Motor Store Ltd | Wholesale & retail | 2021 |
| Henson Properties LLP | | 2014 |
| Henson Property Commercial Ltd | Real estate | 2022 |
| Henson Property Company Ltd | Real estate | 2006 |
| Henson Property Corbridge Limited | Real estate | 2017 |
| Henson Property Holdings Limited | Real estate | 2016 |
| Henson Property Investments Limited | Real estate | 2023 |
| Henson Property Management Ltd | Real estate | 2016 |
| Henson Property Northumberland Limited | Hospitality | 2017 |
| Henson Residential Investments Limited | Real estate | 2023 |
| Hepple Engineering Services Limited | Construction | 1982 |
| Hepple NE Limited | Construction | 2017 |
| Hepscott Fields Management Company Limited | Real estate | 2022 |
| Heqlas Integrated Services Ltd | Information & communication | 2019 |
| Heqlas Security Systems Ltd | Administrative & support | 2022 |
| Heraldai Ltd | Information & communication | 2025 |
| Heramba Investment Ltd | Financial services | 2023 |
| Herbert Dove Trustees Limited | Wholesale & retail | 1996 |
| Heritage Eyecare Limited | Health & social care | 2018 |
| Heritage Feast & Decor Ltd | Hospitality | 2026 |
| Heritage Gardens (High Gosforth Park) Management Company Ltd | Households | 2022 |
| Heritage Home Improvement Construction Ltd | Construction | 2020 |
| Heritage Home Solutions Ltd | Manufacturing | 2022 |
| Heritage Homes NE Limited | Real estate | 2026 |
| Heritage Landscaping Supplies Ltd | Administrative & support | 2017 |
| Heritage Lunch & Restaurant Limited | Hospitality | 2026 |
| Heritage Markets Limited | Wholesale & retail | 2025 |
| Heritage Wills and Trusts Ltd | Professional & scientific | 2025 |
| Heroes Properties Limited | Real estate | 2025 |
| Heron Marine Limited | Professional & scientific | 2011 |
| Heron Marine Services Limited | Transport & logistics | 2016 |
| Herrington View Residents Management Company Limited | Real estate | 2023 |
| Hervillard Holdings Ltd | Financial services | 2025 |
| Heslop Electrical Services Ltd | Construction | 2016 |
| Hetton Steads Management Company Limited | Households | 2023 |
| Heugh Farm Limited | Agriculture & fishing | 2022 |
| Hewitson Holdings (Newcastle) Ltd | Real estate | 2023 |
| Heworth Business Centre Limited | Real estate | 2021 |
| Hexaglio Limited | Information & communication | 2004 |
| Hexham Eats Burgers Ltd | Hospitality | 2025 |
| Hexham Pharmacy Limited | Wholesale & retail | 2023 |
| Hexislab Limited | Professional & scientific | 2013 |
| Hexislab Ventures Limited | Wholesale & retail | 2023 |
| HEY Enzo Limited | Financial services | 2025 |
| HEY Jude Creative Ltd | Information & communication | 2024 |
| HF Property Services Limited | Real estate | 2019 |
| HF Signature Rides Limited | Wholesale & retail | 2025 |
| HFF Investments Ltd Ltd | Real estate | 2022 |
| HG Eyecare Limited | Wholesale & retail | 2025 |
| HGA Incorporation Ltd | Real estate | 2021 |
| HGM Salon Supplies Ltd | Wholesale & retail | 2025 |
| Hgvshield Ltd | Professional & scientific | 2025 |
| HH Leisure Limited | Hospitality | 2009 |
| Hhcpm Limited | Professional & scientific | 2010 |
| Hhdservices Ltd | Wholesale & retail | 2021 |
| HI Flex Plumbing and Heating Ltd | Wholesale & retail | 2024 |
| HI SIM Limited | Manufacturing | 2026 |
| Hi-Tech Signs & Engraving Limited | Manufacturing | 2006 |
| Hidden GEM Talent Ltd | Information & communication | 2025 |
| Hidden Space Limited | Real estate | 2018 |
| Higgins Agricole Limited | Transport & logistics | 1963 |
| High Baulk Steading Management Company Limited | Real estate | 2025 |
| High Bridge Associates Ltd | Professional & scientific | 2003 |
| High Bridge CIC | Arts & recreation | 2021 |
| High Bridge Mortgages Limited | Professional & scientific | 2022 |
| High Church Wynd Management Company Limited | Real estate | 2000 |
| High Dales Cottages (Management) Limited | Households | 1988 |
| High Dene Property Management Company (NO. 2) Limited | Real estate | 1993 |
| High Fell Events Ltd | Arts & recreation | 2014 |
| High Heaton Retail Limited | Wholesale & retail | 2018 |
| High House Barn Ltd | Hospitality | 2019 |
| High Life North Limited | Information & communication | 2021 |
| High Meadows (Management) Limited | Real estate | 2007 |
| High PIT Car Wash Ltd | Administrative & support | 2026 |
| High Point View Limited | Construction | 2015 |
| High Pony Ltd | Wholesale & retail | 2025 |
| High Steads Residents Management Company Limited | Households | 2022 |
| High Street Capitals NE Limited | Hospitality | 2025 |