| Haigh Property Limited | Real estate | 2019 |
| Hailo Digital Limited | Information & communication | 2025 |
| Hailstone Design Ltd | Administrative & support | 2015 |
| Hain Advisory Ltd | Financial services | 2020 |
| Hain Engineering Limited | Professional & scientific | 2019 |
| Hainsworp Consulting Services Limited | Administrative & support | 2022 |
| Hair by Georgia Chidu Ltd | Other services | 2025 |
| Hair Story Hairdressing Limited | Other services | 2025 |
| Hair to Order Limited | Other services | 2003 |
| Hairdressing by Jasmine Limited | Other services | 2022 |
| Hairs and Graces Limited | Other services | 2018 |
| Halbonisa IR Solutions Limited | Administrative & support | 2026 |
| Halcyon (Management Company) Limited | Households | 2022 |
| Halcyon Advisory Ltd | Administrative & support | 2026 |
| Halcyon Exchange Limited | Wholesale & retail | 2009 |
| Halcyon IT Solutions Ltd. | Information & communication | 2014 |
| Hale Dental Clinic Ltd | Health & social care | 2009 |
| Hale Digi-Tech Limited | Professional & scientific | 2019 |
| Hale Road Dental Practice Limited | Health & social care | 2013 |
| Hale Street Kitchens and Bedrooms Ltd | Wholesale & retail | 2015 |
| Half Cadence Limited | Administrative & support | 2025 |
| Hali Munday MEP Consultants Limited | Administrative & support | 2016 |
| Halkyn District Mines Drainage Company Limited | Professional & scientific | 2003 |
| Hall Nook Therapy Limited | Health & social care | 2018 |
| Hall Structural Consultancy Ltd | Administrative & support | 2026 |
| Hall Systems Limited | Administrative & support | 2014 |
| Hallam Technical Services Limited | Administrative & support | 2015 |
| Hallco 1274 Limited | Real estate | 2005 |
| Halldene Ltd | Professional & scientific | 2013 |
| Hallett PMO Services Limited | Administrative & support | 2014 |
| Halliwell Distribution Limited | Wholesale & retail | 2023 |
| Halliwell Jones (Warrington) Limited | Wholesale & retail | 1997 |
| Halliwell Jones Group Limited | Financial services | 2026 |
| Hallmark Investments Corporation Limited | Financial services | 2013 |
| Halls Totara Ltd | Other services | 2019 |
| Halo Change Limited | Professional & scientific | 2024 |
| Halo Hair & Beauty ( NW ) Limited | Other services | 2025 |
| Halo Property Group Limited | Real estate | 2019 |
| Halo Tanning Rooms Limited | Arts & recreation | 2021 |
| Halsho Cars Limited | Wholesale & retail | 2023 |
| Halton Heating & Plumbing Limited | Construction | 2003 |
| Halton Kelly Limited | Real estate | 2022 |
| HAM Tech Ltd | Education | 2024 |
| Hambledon Holdings Limited | Real estate | 2016 |
| Hambleton Homes and Developments Limited | Construction | 2024 |
| Hamido Barbers (Warrington) Ltd | Other services | 2020 |
| Hamilton Engineering Solutions Limited | Administrative & support | 2024 |
| Hamilton George Limited | Administrative & support | 2013 |
| Hamilton Vale Limited | Real estate | 2025 |
| Hammond Engineering Limited | Other services | 2018 |
| Hammond Hemp Homes Ltd | Construction | 2023 |
| Hampson Plumbing & Roofing Ltd | Construction | 2026 |
| Hampson Project Services Limited | Administrative & support | 2024 |
| Hampson Property Solutions Ltd | Real estate | 2025 |
| Hampsons IT Solutions Ltd | Information & communication | 2008 |
| Hampton Coaches Ltd | Wholesale & retail | 2017 |
| Hampton Grove Ltd | Real estate | 2012 |
| Hamsard 3425 Limited | Extraterritorial | 2016 |
| Handling Data Ltd | Information & communication | 2004 |
| Handson Mechanical Services Limited | Administrative & support | 2016 |
| Handtz Ltd | Information & communication | 2019 |
| Haneen Express Ltd | Wholesale & retail | 2020 |
| Hanga Trans Ltd | Transport & logistics | 2016 |
| Hangar Eleven Limited | Professional & scientific | 2017 |
| Hani Elsayed Urology Ltd | Professional & scientific | 2025 |
| Hankat Limited | Administrative & support | 2016 |
| Hanley Racing Limited | Arts & recreation | 1984 |
| Hannah Consultants Ltd | Information & communication | 2017 |
| Hannah Murray Accountancy Limited | Professional & scientific | 2022 |
| Hannah Randall Ltd | Information & communication | 2020 |
| Hannah Worth Legal Services Ltd | Professional & scientific | 2016 |
| Hannah's Homecare Ltd | Health & social care | 2014 |
| Hannon Properties Limited | Real estate | 2022 |
| Hanson Brothers Ltd | Health & social care | 2013 |
| Hanson Commercial Management Limited | Professional & scientific | 2025 |
| Hanson Engineering Solutions Ltd | Administrative & support | 2026 |
| Hanzipan Creative Ltd | Administrative & support | 2020 |
| Happ Properties Limited | Real estate | 2022 |
| Happer Contracting Limited | Construction | 2025 |
| Happi Home Care Ltd | Health & social care | 2025 |
| Happiness Wrapped Ltd | Wholesale & retail | 2018 |
| Happy Home Rentals Group Limited | Real estate | 2026 |
| Happy House Warrington Ltd | Hospitality | 2025 |
| Happy Sumo Limited | Administrative & support | 2015 |
| Happy to Care 8 Ltd | Health & social care | 2022 |
| Happy to Care Plus Ltd | Health & social care | 2022 |
| Harberson Ltd | Wholesale & retail | 2010 |
| Harbour GIN Company Ltd | Manufacturing | 2018 |
| Hard Labour Gym Limited | Arts & recreation | 2016 |
| Hardev Limited | Administrative & support | 2014 |
| Harding Packaging Services Limited | Manufacturing | 1989 |
| Hardway Technical Solutions Limited | Professional & scientific | 2017 |
| Haresfield Developments Limited | Construction | 2018 |
| Haresfield Investments Limited | Real estate | 2010 |
| Haresfield LLP | | 2010 |
| Hargreaves & Hough Ltd | Other services | 2013 |
| Hari OM Pure Vegetarian Ltd | Hospitality | 2025 |
| Hark Property Limited | Real estate | 2018 |
| Harlay's Limited | Wholesale & retail | 2021 |
| Harlyd Ltd | Real estate | 2020 |