| Gwynedd Flooring Ltd | Construction | 2019 |
| Gynaecology Surgery UK Limited | Health & social care | 2026 |
| H & R Property Investments Limited | Real estate | 2021 |
| H a W Properties Ltd | Real estate | 2023 |
| H Esmer Locum Limited | Health & social care | 2021 |
| H H L Property Management Ltd. | Households | 2004 |
| H White Ltd | Health & social care | 2013 |
| H Winyard Consulting Ltd | Professional & scientific | 2026 |
| H&H UK 2026 Limited | Wholesale & retail | 2025 |
| H&J Consultants NW Ltd | Administrative & support | 2026 |
| H&M Letting Solutions Ltd | Real estate | 2025 |
| H&M Optimisation Specialists Ltd | Professional & scientific | 2025 |
| H.B. Nominees Limited | Households | 1979 |
| H.D Creative Ltd | Information & communication | 2021 |
| H.D.D. Consultants Limited | Professional & scientific | 1998 |
| H.M.S. Enterprises Limited | | 1987 |
| H10 Marketing Limited | Professional & scientific | 2017 |
| H2O Bespoke Bathrooms Limited | Construction | 2020 |
| H3A Ltd | Wholesale & retail | 2026 |
| Habitat NW Ltd | Agriculture & fishing | 2024 |
| Habitats Abroad Limited | Real estate | 2010 |
| Habitreat Limited | Health & social care | 2022 |
| Hackett Equity Solutions Limited | Professional & scientific | 2010 |
| Haecceity Ltd | Information & communication | 2022 |
| Haematology Medical Reports Limited | Professional & scientific | 2022 |
| Hagan Digital Limited | Information & communication | 2025 |
| Hagan Library Ltd | Information & communication | 2023 |
| Hagan Ltd | Information & communication | 2015 |
| Haibrid Limited | Information & communication | 2015 |
| Haig Holdings Ltd | Real estate | 2016 |
| Hailwood Accountants Limited | Professional & scientific | 2004 |
| Hailwood Property Limited | Construction | 2021 |
| Hair! SHE IS Limited | Other services | 2022 |
| Halcyon Technical Training Ltd | Education | 2025 |
| Hall Investments Wirral Limited | Real estate | 2020 |
| Hall Rigby Advertising Ltd | Professional & scientific | 2025 |
| Hall Smith Publishing Ltd | Information & communication | 2016 |
| Hall Star Education Ltd | Education | 2020 |
| Hall Star Holiday Clubs Ltd | Health & social care | 2022 |
| Halligans Surveying and Joinery Services Ltd | Construction | 2026 |
| Halo Delivery Services Ltd | Transport & logistics | 2026 |
| Haloda Limited | Construction | 2023 |
| Haltec (Chester) Limited | Construction | 1998 |
| Halton Rail Ltd | Professional & scientific | 2019 |
| Halund Property Holdings Ltd | Real estate | 2026 |
| Hamilton Portfolio 3 Ltd | Financial services | 2019 |
| Hammer and Tongs (UK) Limited | Administrative & support | 2006 |
| Hampshire Self Protection Limited | Education | 2012 |
| Hampsons Window Cleaning & Exterior Maintenance Ltd | Administrative & support | 2023 |
| Hampstead Counselling Limited | Professional & scientific | 2015 |
| Hand Tool Centre Limited | Wholesale & retail | 2020 |
| Handi Mobility Limited | Transport & logistics | 2020 |
| Hanlon Consultancy Limited | Administrative & support | 2023 |
| Hanlon Homes Limited | Real estate | 2024 |
| Hanshaws Research Ltd | Manufacturing | 2014 |
| Hapii Ltd | Manufacturing | 2014 |
| Happy ED Ltd | Education | 2020 |
| Happy Hooves Livery Limited | Agriculture & fishing | 2020 |
| Happy Hounds Pet Care Ltd | Other services | 2017 |
| Happy Investments Ltd | Administrative & support | 2009 |
| Happy Knitter Limited | Wholesale & retail | 2023 |
| Happy Pirate Ltd | Information & communication | 2020 |
| Happy Times Activities Ltd | Health & social care | 2013 |
| Happybloomuk Ltd | Wholesale & retail | 2023 |
| Happyland Nursery Limited | Health & social care | 2022 |
| HAPTIV8 Ltd | Health & social care | 2023 |
| Harboo Limited | Professional & scientific | 2012 |
| Hardean Limited | Wholesale & retail | 2006 |
| Hardene Limited | Construction | 2004 |
| Hardman Builders Ltd | Construction | 2022 |
| Hardman Housing Limited | Construction | 2026 |
| Hardman Resource Holdings Ltd | Financial services | 2026 |
| Hardwood Solutions Co Ltd | Wholesale & retail | 2026 |
| Harjana Property Ltd | Real estate | 2025 |
| Harland-Green Properties Ltd | Real estate | 2022 |
| Harrandbass Ltd. | Professional & scientific | 2018 |
| Harriet Wilson Holdings Limited | Financial services | 2024 |
| Harrington Wyles Limited | Real estate | 2001 |
| Harris & Rees Site Solutions Limited | Wholesale & retail | 2025 |
| Harrison Utilities Ltd | Construction | 2025 |
| Hartsoft Ltd | Information & communication | 2016 |
| Harvey (Wirral) Properties Limited | Real estate | 2016 |
| Hashtag Residential Ltd | Real estate | 2026 |
| Haslem Engineering Limited | Professional & scientific | 2023 |
| Hathi Homes Limited | Real estate | 2021 |
| Hats Heating Ltd | Administrative & support | 2011 |
| Hattrix Sports Ltd | Wholesale & retail | 2025 |
| Haughey Properties Ltd | Real estate | 2023 |
| Haval Food Ltd | Hospitality | 2025 |
| Havard Law Limited | Professional & scientific | 2014 |
| Haven Case Management Limited | Health & social care | 2010 |
| Havencare (Wirral) Limited | Health & social care | 1999 |
| Havendale Properties Limited | Real estate | 2018 |
| Hawk Wing NW Ltd | Real estate | 2025 |
| Hawking & Kendrick Distribution Ltd | Wholesale & retail | 2024 |
| Haworth Lloyd Ltd | Administrative & support | 2004 |
| Haycroft Estates Limited | Real estate | 2017 |
| Hayley Amanda Medical Ltd | Health & social care | 2015 |
| Hayley’S Aesthetics Limited | Other services | 2023 |
| Haynes-Garcia Properties Ltd | Real estate | 2020 |