| Hamsard 3788 Limited | Financial services | 2024 |
| Hamsard 3789 Limited | Financial services | 2024 |
| Hamsard 3790 Limited | Financial services | 2024 |
| Handbury Pharma Consulting Limited | Professional & scientific | 2014 |
| Handsome Music Limited | Information & communication | 2000 |
| Hangar 7 Limited | Extraterritorial | 2009 |
| Hanging Gate Inn Ltd | Hospitality | 2020 |
| Hanna Sillitoe Limited | Wholesale & retail | 2019 |
| Hannah Homes Ltd | Real estate | 2020 |
| Hannahs Place Ltd | Hospitality | 2023 |
| Hansa Timber Limited | Wholesale & retail | 2021 |
| Happi Limited | Information & communication | 2018 |
| Happy DAD Ltd | Wholesale & retail | 2022 |
| Happy Humans Medical Services Ltd | Health & social care | 2022 |
| Happy Orca Ltd | Professional & scientific | 2024 |
| Happy Otter Projects Ltd | Construction | 2022 |
| Happy Valley Home Care Limited | Health & social care | 2016 |
| Happy Valley Honey Limited | Agriculture & fishing | 2018 |
| Happy Valley Hospitality Co Limited | Hospitality | 2025 |
| Harbour Fitness Ltd | Arts & recreation | 2017 |
| Harbour View Flats (Cemaes Bay) Limited | Households | 1983 |
| Hardtech Engineering Bidco 1 Limited | Professional & scientific | 2023 |
| Hardtech Engineering Bidco 3 Limited | Professional & scientific | 2025 |
| Hardtech Engineering Services Limited | Professional & scientific | 2023 |
| Hardtech H.V. Limited | Construction | 2014 |
| Hardwick & Co Consulting Ltd | Extraterritorial | 2024 |
| Harewood Brickwork Ltd | Construction | 2013 |
| Hark Digital Ltd | Information & communication | 2020 |
| Hark People Ltd | Administrative & support | 2020 |
| Harkin Ltd | Professional & scientific | 2020 |
| Harlequin Development Strategies (Crewe) Limited | Professional & scientific | 2013 |
| Harmer Family Company Limited | Financial services | 2024 |
| Harmony Headwraps Ltd | Wholesale & retail | 2008 |
| Harmony Holistic Healthcare Ltd | Health & social care | 2025 |
| Harmony Stone Ltd | Construction | 2023 |
| Haroula LLP | | 2016 |
| Harpers Investments Limited | Health & social care | 2022 |
| Harpers Practice Limited | Health & social care | 2022 |
| Harrington Arms Bosley Limited | Hospitality | 2016 |
| Harrison IP Limited | Professional & scientific | 2006 |
| Harrison Moody Training & Development Consulting 2010 LLP | | 2010 |
| Harrop Brook Investments Ltd | Real estate | 2019 |
| Harry Nicholas Bailey Limited | Wholesale & retail | 2003 |
| Harte Associates Ltd | Professional & scientific | 2025 |
| Harts Limited | Professional & scientific | 2008 |
| Hartwoods Industries Ltd | Wholesale & retail | 2019 |
| Haslemere Consultancy Limited | Professional & scientific | 2021 |
| Hausuk Ltd | Real estate | 2026 |
| Haven Rehabilitation Services Limited | Health & social care | 1995 |
| Haworth Property Developments Limited | Construction | 2018 |
| Hawthorn (NO1) Bollington Ltd | Households | 2011 |
| Hawtin Construction Ltd | Construction | 2016 |
| Haxsupplements Ltd | Wholesale & retail | 2026 |
| Haya Eclat Ltd | Wholesale & retail | 2025 |
| Hayagnar Holdings Ltd | Information & communication | 2015 |
| Hayes & Partners Limited | Professional & scientific | 1985 |
| Hayes Forensics Limited | Extraterritorial | 2022 |
| Haynes & Sherwood Limited | Real estate | 1964 |
| Hayward & Associates Counselling Services Ltd | Health & social care | 2015 |
| Hazel Owen Ltd | Professional & scientific | 2018 |
| Hazel Tree Montessori Nursery Limited | Education | 1988 |
| Hazelwood Professional Ltd | Professional & scientific | 2011 |
| Hazey Eyes Ltd | Administrative & support | 2016 |
| HBC T/A Home Baking Cheshire Limited | Manufacturing | 2021 |
| HCA NO. 6 Limited | Extraterritorial | 2005 |
| HCG Consultants Limited | Professional & scientific | 2015 |
| HD Detailing Limited | Administrative & support | 2026 |
| Head on Limited | Information & communication | 2019 |
| Headflex Limited | Professional & scientific | 2025 |
| Headman Estates Limited | Extraterritorial | 1996 |
| Healing Through Hiking CIC | Arts & recreation | 2025 |
| Health & Beauty Studio Ltd | Health & social care | 2024 |
| Health Analytical Solutions Limited | Professional & scientific | 2014 |
| Health Housing and Social Care Ltd | Health & social care | 2012 |
| Health Istanbul Ltd | Health & social care | 2025 |
| Healthcare Innovation Consortium Ltd | Professional & scientific | 2021 |
| Healthspan Solutions Limited | Health & social care | 2026 |
| Heart Matters (UK) Limited | Other services | 2014 |
| Heartborn Studios Ltd | Manufacturing | 2024 |
| Heat Services Ltd | Construction | 2026 |
| Heaton Derby Management Limited | Households | 1976 |
| Heaton House Events Limited | Administrative & support | 2011 |
| Helios Global Group Limited | Professional & scientific | 2020 |
| Helios Medical Communications Limited | Professional & scientific | 2015 |
| Helix Commercial Services Ltd | Professional & scientific | 2025 |
| Helix Property Group Limited | Administrative & support | 2010 |
| Helix Topco Limited | Administrative & support | 2018 |
| Help From the Heart Care Limited | Health & social care | 2023 |
| Helvicell Limited | Professional & scientific | 2012 |
| Hemy & Landon Limited | Professional & scientific | 2013 |
| Henbury Corporate Ltd | Financial services | 2024 |
| Henbury Electrical Cheshire Ltd | Other services | 2026 |
| Henbury Law Limited | Professional & scientific | 2024 |
| Henbury Travel Ltd | Administrative & support | 2020 |
| Henley Financial Services Limited | Financial services | 2019 |
| Henry Construction Services Limited | Professional & scientific | 2017 |
| Henry James Forestry Management Company Ltd | Agriculture & fishing | 2021 |
| Henry's by Christian Ltd | Hospitality | 2025 |
| Hensh Ltd | Wholesale & retail | 2025 |
| Henshall Engineering Ltd | Manufacturing | 2017 |