| High FLY SK Events Ltd | Other services | 2024 |
| High Pressure Equipment Limited | Manufacturing | 2014 |
| High Spirits Stores Ltd | Wholesale & retail | 2025 |
| High Street Car Sales Ltd | Wholesale & retail | 2025 |
| High Street Food Ltd | Wholesale & retail | 2025 |
| High-Tech Mot's Ltd | Wholesale & retail | 2019 |
| Highclere Show Ltd | Administrative & support | 2019 |
| Higherco Ltd | Health & social care | 2025 |
| Highgate 2 Limited | Construction | 2018 |
| Highgate 3 Limited | Construction | 2020 |
| Highlane Oatcakes Ltd | Hospitality | 2019 |
| Highpoint (Stoke on Trent) Limited | Real estate | 2018 |
| Hightor Consulting 2024 Limited | Professional & scientific | 2024 |
| Highways-Training UK Ltd | Professional & scientific | 2009 |
| Hilbury Investments Limited | Real estate | 2015 |
| Hildatop Ltd | Health & social care | 2019 |
| Hilink Ecommerce Limited | Wholesale & retail | 2025 |
| Hill & Taylor Flooring Limited | Other services | 2018 |
| Hill 2015 Limited | Hospitality | 2015 |
| Hill Fish & Chips Pizza Ltd | Hospitality | 2025 |
| Hill Top Grange Developments Limited | Construction | 2019 |
| Hillco Limited | Financial services | 2023 |
| Hillman Design IT Ltd | Information & communication | 2022 |
| Hills Independent Plumbing Limited | Construction | 2002 |
| Hillside (Leisure) Limited | Professional & scientific | 1996 |
| Hillside (Media Services) Limited | Administrative & support | 2014 |
| Hillside (New Media Holdings) Limited | Professional & scientific | 2000 |
| Hillside (New Media Midco) Limited | Administrative & support | 2018 |
| Hillside (Shared Services 2018) Limited | Administrative & support | 2018 |
| Hillside (Shared Services) Limited | Administrative & support | 2000 |
| Hillside (Spain New Media) PLC | Arts & recreation | 2011 |
| Hillside (Technology Product) Limited | Information & communication | 2019 |
| Hillside (Technology) Limited | Information & communication | 2012 |
| Hillside (Trader Services) Limited | Administrative & support | 2014 |
| Hillside Children's Day Nursery (Stoke) Limited | Education | 2021 |
| Hillside Community Gym CIC | Arts & recreation | 2021 |
| Hillside Fishing & Leisure Limited | Arts & recreation | 2025 |
| Hillside Project Services Limited | Professional & scientific | 2026 |
| Hillswood Independent Ltd | Professional & scientific | 2016 |
| Hillswood Ltd | Health & social care | 2019 |
| Hilltop Housing Limited | Real estate | 2019 |
| Hilltop Tots Day Nursery Ltd | Education | 2016 |
| Hinab UK Limited | Information & communication | 2013 |
| Hinata Retail Limited | Wholesale & retail | 2025 |
| Hins Chinese Takeaway Ltd | Hospitality | 2025 |
| HIP Habby Limited | Professional & scientific | 2002 |
| Hippy & Hound Healing Limited | Other services | 2021 |
| Hire a Princess Limited | Arts & recreation | 2012 |
| Hirehawk Limited | Administrative & support | 2023 |
| Hirobe Limited | Administrative & support | 2018 |
| Hirschi Property Ltd | Real estate | 2017 |
| HIS N Her's Food & Booze Ltd | Wholesale & retail | 2011 |
| HIT Digital Ltd | Information & communication | 2015 |
| Hivergize Ltd | Information & communication | 2021 |
| Hivevibe Ltd | Manufacturing | 2026 |
| Hiwa Barber (Stoke) Limited | Other services | 2025 |
| Hizmedia Limited | Information & communication | 2025 |
| HJM Maintenance Limited | Construction | 2025 |
| HK Commerce Ltd | Wholesale & retail | 2025 |
| HK Duvera Limited | Wholesale & retail | 2024 |
| HL Hair Connection Limited | Other services | 2025 |
| HM 1965 Ltd | Financial services | 2013 |
| HM 1966 Ltd | Professional & scientific | 1994 |
| HM Imports Ltd | Other services | 2019 |
| HM Recruitment Partner Ltd | Public administration | 2025 |
| HMB Arts & Productions Ltd | Wholesale & retail | 2024 |
| HMF Motors Ltd | Wholesale & retail | 2023 |
| HMH Foods Ltd | Hospitality | 2021 |
| HMH Sports Ltd | Wholesale & retail | 2020 |
| Hmlo Limited | Health & social care | 2026 |
| HMM Electrical Services Limited | Manufacturing | 2023 |
| HMM Mechanical Services Limited | Manufacturing | 2010 |
| HMO Success Limited | Professional & scientific | 2017 |
| HMR Optical Services Limited | Health & social care | 2019 |
| HMS Fabrication Limited | Manufacturing | 2023 |
| HND Care Ltd | Health & social care | 2024 |
| HND Children's Care Ltd | Health & social care | 2026 |
| HO Fook Ltd | Hospitality | 2025 |
| Hobb Computer Services Limited | Information & communication | 1999 |
| Hobb Investments Limited | Real estate | 2021 |
| Hobson Convenience Ltd | Wholesale & retail | 2021 |
| Hocking International Limited | Professional & scientific | 2015 |
| Hodson and Clowes Limited | Professional & scientific | 2022 |
| Holcol Properties Ltd | Real estate | 2026 |
| Holdable Ltd | Financial services | 2019 |
| Holdcroft Catering Events Limited | Hospitality | 2021 |
| Holdcroft Estates Ltd | Real estate | 2024 |
| Holdcroft Heating & GAS Fitting Limited | Construction | 2002 |
| Holdcroft Heating Group Limited | Financial services | 2018 |
| Holdcroft Hyundai Limited | Wholesale & retail | 2016 |
| Holdcroft Property Ltd | Real estate | 2023 |
| Holdcroft's Catering Limited | Hospitality | 2015 |
| Holder Lettings Ltd | Real estate | 2023 |
| Holding EB Company Ltd | Financial services | 2020 |
| Holdson Products Limited | Wholesale & retail | 2023 |
| Holdsworth Ventilations Limited | Manufacturing | 1961 |
| Holdway HGV Services Ltd | Wholesale & retail | 2024 |
| Hole in the Wall Catering Limited | Hospitality | 2020 |
| Holip Construction Limited | Extraterritorial | 2019 |
| Holip Developments Ltd | Extraterritorial | 2019 |