| Holgate Consultants Limited | Professional & scientific | 2001 |
| Holgate Fenestration Ltd | Construction | 2024 |
| Hollifield Engineering Ltd | Professional & scientific | 2013 |
| Hollou Holdings Ltd | Financial services | 2024 |
| Hollou Ltd | Wholesale & retail | 2018 |
| Hollou Properties Ltd | Real estate | 2019 |
| Holly Blue Events Ltd | Professional & scientific | 2024 |
| Hollywood Nails TS Ltd | Other services | 2021 |
| Holman Pilotage Ltd | Transport & logistics | 2018 |
| Holmes Safety Ltd | Construction | 2024 |
| Home and Garden Solutions Limited | Construction | 2025 |
| Home Improvements and Roofing UK Ltd | Construction | 2025 |
| Home Joy Store Ltd | Wholesale & retail | 2025 |
| Home-Start Teesside | Health & social care | 2005 |
| Home-Start Teesside Trading Ltd | Wholesale & retail | 2009 |
| HOME2HOME (NE) Ltd | Real estate | 2024 |
| Homegardenandpets Limited | Wholesale & retail | 2022 |
| Homeguard Heating & Plumbing Ltd | Construction | 2026 |
| Homeland Properties (Teesside) Limited | Construction | 2017 |
| Honarr Limited | Professional & scientific | 2022 |
| Honeyman Offshore Services Ltd | Professional & scientific | 2018 |
| Honky Tonk Bar and Grill Ltd | Hospitality | 2024 |
| Honky Tonk's Middlesbrough Ltd | Hospitality | 2023 |
| Honky Tonks Country Sports Bars Ltd | Hospitality | 2025 |
| Honky Tonks Guisborough Ltd | Hospitality | 2025 |
| Hope Haven Hideaway Ltd | Hospitality | 2025 |
| Hopeamalie Limited | Professional & scientific | 2011 |
| Hopefields Education C.I.C. | Education | 2020 |
| Hopper Solutions Limited | Construction | 2007 |
| Horizan Trend Limited | Wholesale & retail | 2025 |
| Horizon Commercial Finance Ltd | Financial services | 2021 |
| Horizon Community Living CIC | Hospitality | 2025 |
| Horizon Energy Ltd | Professional & scientific | 2021 |
| Horizon Group Holdings Ltd | Real estate | 2021 |
| Horizon JV Ltd | Real estate | 2022 |
| Horizon Landscape Gardens Limited | Administrative & support | 2024 |
| Horizon Portfolio Building Ltd | Administrative & support | 2022 |
| Horizon Property Agents Ltd | Real estate | 2019 |
| Horizon Property Services (NE) Ltd | Construction | 2021 |
| Horizon Stays Management Ltd | Hospitality | 2021 |
| Horizons Accounting Limited | Professional & scientific | 2020 |
| Horner Electrical Limited | Construction | 2019 |
| Horner Technology Ltd | Information & communication | 2015 |
| Hosanna Global Enterprises Limited | Wholesale & retail | 2026 |
| Hospitality Consultancy (FOX Inn) Limited | Hospitality | 2022 |
| Hospitality Consultancy Ltd | Hospitality | 2019 |
| Hossecurity Limited | Financial services | 2025 |
| Hottynam Ltd | Wholesale & retail | 2025 |
| Hotwok Hotpot Ltd | Hospitality | 2020 |
| House of Froxx Limited | Wholesale & retail | 2019 |
| House of Jepson Ltd | Education | 2025 |
| House of Laila Ltd | Wholesale & retail | 2025 |
| House of Ostertag Limited | Arts & recreation | 2016 |
| House of Rune Ltd | Wholesale & retail | 2022 |
| House of Type Limited | Professional & scientific | 2012 |
| House Robbo Ltd | Wholesale & retail | 2019 |
| HOUSE2HOME (M'Bro) Ltd | Real estate | 2025 |
| Household Property Services Ltd | Construction | 2018 |
| Household Supplies Direct Ltd | Wholesale & retail | 2023 |
| Housing Disrepair Surveyors Limited | Administrative & support | 2025 |
| Howard Court Weddings LLP | | 2021 |
| Howard Street Autos Ltd | Wholesale & retail | 2026 |
| Howard's Tyres Ltd | Wholesale & retail | 2026 |
| Howbury Construction Limited | Construction | 2014 |
| Howe Hill Farm Ltd | Agriculture & fishing | 2024 |
| Howes Technical Limited | Professional & scientific | 2019 |
| Hoyland Leisure Limited | Hospitality | 2018 |
| HPG Residential Ltd | Real estate | 2024 |
| HPH Painting & Decorating Ltd | Construction | 2026 |
| HR Honey BEE Ltd | Administrative & support | 2026 |
| HR Properties Pro Ltd | Real estate | 2024 |
| HRM Homes Ltd | Real estate | 2020 |
| HRP Properties Ltd | Real estate | 2022 |
| Hrsp Ltd | Real estate | 2025 |
| HS Eduvisor Ltd | Administrative & support | 2026 |
| HS Mobile Tyres Ltd | Wholesale & retail | 2025 |
| HS Properties (Teesside) Ltd | Real estate | 2020 |
| HS Protector Limited | Professional & scientific | 2010 |
| HS Removals Ltd | Transport & logistics | 2024 |
| Hs&S Property Limited | Real estate | 2025 |
| HS1 Properties Ltd | Real estate | 2025 |
| HSA Developments (NE) Ltd | Construction | 2014 |
| HSA DIY Limited | Real estate | 2011 |
| HSA Newcastle Ltd | Wholesale & retail | 2024 |
| HSA Plumbing and Heating Limited | Wholesale & retail | 2022 |
| HSE Management Solutions Limited | Professional & scientific | 2024 |
| HSG Engineering & Plant Services Ltd | Manufacturing | 2025 |
| HSG Engineering Ltd | Manufacturing | 2013 |
| HSH Sports Limited | Arts & recreation | 2014 |
| HTF Installations Ltd | Construction | 2021 |
| Hub Peak Limited | Administrative & support | 2025 |
| Hubo Consultancy Limited | Financial services | 2023 |
| Hudson & Co. Homes Ltd | Real estate | 2024 |
| Hudson Aesthetics Co. Ltd | Health & social care | 2025 |
| Hudson and SON Enterprises Ltd | Financial services | 2025 |
| Hudson Services (NE) Limited | Construction | 2018 |
| Hughes Cables Limited | Professional & scientific | 2022 |
| Hughes Family Investments | Professional & scientific | 2020 |
| Hugo Instruments Limited | Professional & scientific | 2025 |
| Human Core HR Ltd | Administrative & support | 2025 |