| Heat Response Limited | Construction | 2007 |
| Heat-Energy Advisory (London) Limited | Wholesale & retail | 2020 |
| Heat-Energy Advisory Ltd | Wholesale & retail | 2015 |
| Heat-Link Heating Services Ltd | Construction | 2018 |
| Heatability Limited | Wholesale & retail | 2026 |
| Heatguru Ltd | Construction | 2023 |
| Heath Accounting Ltd | Professional & scientific | 2011 |
| Heath Cattery Limited | Agriculture & fishing | 2025 |
| Heath Pharmacy Limited | Wholesale & retail | 2001 |
| Heathcote Farm Consultancy Ltd | Professional & scientific | 2023 |
| Heatherbrook Services Limited | Real estate | 2016 |
| Heathrow Group Properties Ltd | Real estate | 2025 |
| Heathrow Studios Ltd | Real estate | 2010 |
| Heating and Boiler Spares Limited | Wholesale & retail | 2020 |
| Heatspec (East Midlands) Limited | Construction | 2017 |
| Heatzy Ltd | Construction | 2024 |
| Heaven 4 Foodies Leicester Ltd | Hospitality | 2025 |
| Heaven Cabs Ltd | Transport & logistics | 2026 |
| Heaven Culture Collective Ltd | Arts & recreation | 2025 |
| Heaven Emporium Ltd | Wholesale & retail | 2025 |
| Heaven Properties (Leicester) LLP | | 2008 |
| Heavenly Angels ABS Limited | Real estate | 2018 |
| Heavenly Foods & Beverages Ltd | Wholesale & retail | 2022 |
| Heavenly Fragance Ltd | Manufacturing | 2023 |
| Hebra Limited | Wholesale & retail | 2025 |
| HEC Pharm UK Limited | Wholesale & retail | 2016 |
| Hector's House Interiors Ltd | Professional & scientific | 2025 |
| Hedan Limited | Education | 2020 |
| Heddon Estates Limited | Real estate | 2001 |
| Hedley Ltd | Wholesale & retail | 2025 |
| Hedon Services Limited | Wholesale & retail | 2012 |
| Heer & Alves Limited | Real estate | 2025 |
| Heer Investments (HA) Ltd | Real estate | 2023 |
| Heer Partnership Limited | Real estate | 2017 |
| Heer Platers Limited | Manufacturing | 1998 |
| Heer Properties Limited | Real estate | 2019 |
| Heer Property Group Limited | Real estate | 2024 |
| Heer Property Holdings Limited | Construction | 2018 |
| Heer Property Investments Ltd | Real estate | 2024 |
| Heer Spanish Holdings Limited | Real estate | 2020 |
| Heer Transport Ltd | Transport & logistics | 2020 |
| Heera Estates and Lettings Limited | Real estate | 2026 |
| Heft Studio Limited | Professional & scientific | 2025 |
| Heggs Holdings Ltd | Financial services | 2013 |
| Heideveld Ltd | Transport & logistics | 2024 |
| Heidi Gough Limited | Professional & scientific | 2025 |
| Height Master Access Systems Ltd | Construction | 2026 |
| Heinrich SA Limited | Wholesale & retail | 2022 |
| Heitrich Ltd | Administrative & support | 2020 |
| Heka (UK) Limited | Wholesale & retail | 2018 |
| Helaton Services Ltd | Professional & scientific | 2011 |
| Helen Cooper Writer Ltd | Information & communication | 2020 |
| Helen Mather Healthcare Limited | Professional & scientific | 2012 |
| Helene Wellier Consultants Ltd | Administrative & support | 2019 |
| Helheim Ltd | Wholesale & retail | 2024 |
| Helios International Group Ltd | Wholesale & retail | 2024 |
| Helios Oncology Ltd | Health & social care | 2019 |
| Heliosphere Consult Ltd | Professional & scientific | 2018 |
| Helix Fire & Security Ltd | Administrative & support | 2026 |
| Hell Energy Ltd | Manufacturing | 2017 |
| Hello Goods Ltd | Wholesale & retail | 2025 |
| Hello Luxury Developements Ltd | Real estate | 2026 |
| Hello Phones Ltd | Wholesale & retail | 2018 |
| Hello World AI Limited | Information & communication | 2025 |
| Hellofix Ltd | Other services | 2025 |
| Hellozuk Limited | Wholesale & retail | 2026 |
| Hell’S Bells Classic Motorcycles Ltd | Wholesale & retail | 2020 |
| Help the Homeless Leicester UK Ltd | Wholesale & retail | 2018 |
| Helperr Ltd | Professional & scientific | 2025 |
| Helperthorpe Best Ltd | Transport & logistics | 2015 |
| Helpful Home Care Limited | Other services | 2014 |
| Helping Hand Care Home Limited | Health & social care | 2016 |
| Helping Hands Recruitment Services Ltd | Administrative & support | 2025 |
| Helping Orphans | Health & social care | 2016 |
| Helpmeplz.Org.Uk Ltd | Information & communication | 2022 |
| Helric Property LLP | | 2017 |
| Helsea Care Ltd | Public administration | 2025 |
| Helsinki Holdings Limited | Real estate | 2024 |
| Helynne Properties Limited | Real estate | 2024 |
| Hemal Chem Ltd | Health & social care | 2012 |
| Hemangi Property Limited | Real estate | 2020 |
| Hemblington Logistics Ltd | Transport & logistics | 2014 |
| Hemimatrading Ltd | Administrative & support | 2018 |
| Hemingways Hire Limited | Administrative & support | 2020 |
| Hemingways Horseboxes Limited | Wholesale & retail | 2019 |
| Hemmster Limited | Information & communication | 2026 |
| Hempriya Ltd | Other services | 2013 |
| Hemslock Limited | Professional & scientific | 2007 |
| Henderson Entertainment Ltd | Arts & recreation | 2025 |
| Henderson Management Ltd | Professional & scientific | 2020 |
| Hendersons (Leicester) Limited | Construction | 2013 |
| Henfrey Properties Ltd | Real estate | 2020 |
| Henil Digital Services Ltd | Wholesale & retail | 2025 |
| Henil Logistics Ltd | Transport & logistics | 2025 |
| Henkolu Group Ltd | Information & communication | 2025 |
| Henley Convenience Store Ltd | Wholesale & retail | 2023 |
| Henley Express Limited | Wholesale & retail | 2025 |
| Henleys Nurseries Limited | Wholesale & retail | 2026 |
| Hennary Ltd | Wholesale & retail | 2025 |
| Hennessy & Co Estates Ltd | Real estate | 2026 |