| Hanford Property Survey Solutions Ltd | Professional & scientific | 2024 |
| Hang Fung 283 Limited | Hospitality | 2021 |
| Hang WO Property Limited | Real estate | 2018 |
| Hangar Amateur Boxing Club CIC | Arts & recreation | 2025 |
| Hangar Boxing Club Ltd | Arts & recreation | 2024 |
| HANIN02 Ltd | Administrative & support | 2019 |
| Hankin Harvey Properties Ltd | Real estate | 2016 |
| Hanko Builder Ltd | Construction | 2024 |
| Hankwill Limited | Other services | 1991 |
| Hanley & Wood Ltd | Real estate | 2021 |
| Hannah & Co Property Developments Ltd | Real estate | 2024 |
| Hannah Dace Limited | Hospitality | 2023 |
| Hannah Davis Hairdressing Limited | Other services | 2023 |
| Hannah Downey Properties Limited | Real estate | 2019 |
| Hannah Fresh Food Ltd | Hospitality | 2024 |
| Hannah Onslow Ltd | Arts & recreation | 2025 |
| Hannah Park Road Pizza Ltd | Hospitality | 2026 |
| Hannah's Blinds Limited | Wholesale & retail | 2017 |
| Hannah’S Helping Hands Ltd | Other services | 2024 |
| Hannathan Limited | Transport & logistics | 2017 |
| HANNE1 Ltd | Health & social care | 2023 |
| Hannon Electrical Limited | Professional & scientific | 2014 |
| Hannon Group Ltd | Financial services | 2024 |
| Hannon Vincent Ltd | Professional & scientific | 2025 |
| Hanova Ltd | Wholesale & retail | 2025 |
| Hanover Buildings Limited | Real estate | 2022 |
| Hanover Express Ltd | Wholesale & retail | 2026 |
| Hanover Premier Ltd | Wholesale & retail | 2022 |
| Hanover Scran Ltd | Hospitality | 2023 |
| Hanover Snacks Limited | Hospitality | 2021 |
| Hanover Wealth Management Limited | Financial services | 2007 |
| Hanpire Limited | Real estate | 2016 |
| Hans Properties Limited | Real estate | 1986 |
| Hansa Food Ltd | Hospitality | 2025 |
| Hansa Retail Ltd | Wholesale & retail | 2023 |
| Hansal Locums Ltd | Real estate | 2015 |
| Hansel and Gretal Limited | Administrative & support | 2018 |
| Hansen Psychological Consultancy & Associates Ltd | Health & social care | 2019 |
| Hanswork Ltd | Information & communication | 2023 |
| Hantoma Ltd | Construction | 2025 |
| Hanul Ancutei Ltd | Hospitality | 2025 |
| HAP Estates Limited | Real estate | 2005 |
| Happi Homes Ltd | Real estate | 2016 |
| Happiness Awards CIC | Administrative & support | 2018 |
| Happiness Garden Ltd | Hospitality | 2016 |
| Happy Carrot Records Limited | Information & communication | 2026 |
| Happy Children Ltd | Education | 2012 |
| Happy Customer Holdings Limited | Administrative & support | 2012 |
| Happy Customer Limited | Hospitality | 2004 |
| Happy Days Hospitality Limited | Hospitality | 2018 |
| Happy Days Management Ltd | Real estate | 2023 |
| Happy Days Newsagent Ltd | Wholesale & retail | 2022 |
| Happy Days Properties Ltd | Hospitality | 2016 |
| Happy Days Trips & Services CIC | Health & social care | 2024 |
| Happy Elsa Ltd | Hospitality | 2019 |
| Happy Garden 888 Limited | Hospitality | 2021 |
| Happy Hands Spa Limited | Other services | 2024 |
| Happy Hedgehog Sports Limited | Arts & recreation | 2011 |
| Happy Paws ARE US Limited | Health & social care | 2024 |
| Happy Penguin Properties Limited | Real estate | 2018 |
| Happy Shrimp House HSH Ltd | Agriculture & fishing | 2026 |
| Happymotion Limited | Wholesale & retail | 2020 |
| Happypets Ltd UK Ltd | Wholesale & retail | 2025 |
| HAR Properties NW Ltd | Real estate | 2024 |
| Harakima Limited | Financial services | 2013 |
| Harave Medical and Imaging Limited | Health & social care | 2016 |
| Harber Business Services Limited | Administrative & support | 2016 |
| Harbeth Services Limited | Real estate | 2008 |
| Harbord Electrical Limited | Wholesale & retail | 2004 |
| Harborlink Group Limited | Construction | 2026 |
| Harborlink the Crescent Limited | Real estate | 2025 |
| Harborlink the Trident Limited | Construction | 2026 |
| Harbour Fish and Grill Limited | Hospitality | 2026 |
| Harbour Light Assisted Living CIC | Hospitality | 2012 |
| Harbour Point Facilities Management Limited | Administrative & support | 2025 |
| Harbour Project Management Ltd | Professional & scientific | 2020 |
| Harbour Wheel Limited | Hospitality | 2025 |
| Harbourfield Distribution & Logistics Ltd | Transport & logistics | 2025 |
| Harbourside Marine (Liverpool) Ltd | Education | 2026 |
| Harbourside Sea School Ltd | Education | 2023 |
| Hard Hitting Music Entertainment Ltd | Information & communication | 2019 |
| Hard Target International Ltd | Administrative & support | 2016 |
| Hardcore Fitness Centre Gaerwen Ltd | Arts & recreation | 2019 |
| Harder Group Holdings Ltd | Financial services | 2026 |
| Harder Properties Ltd | Real estate | 2026 |
| Hardi Hairdresser Liverpool Ltd | Other services | 2023 |
| Hardiker Valentine Limited | Professional & scientific | 2025 |
| Hardman Offlicence Ltd | Wholesale & retail | 2026 |
| Hardman Street Assets Limited | Real estate | 2021 |
| Hardman Street Coffee Limited | Hospitality | 2018 |
| Hardman Trading Ltd | Hospitality | 2022 |
| Hardrock Group NW Ltd | Water & waste | 2021 |
| Hardware Ventures Ltd | Hospitality | 2024 |
| Hardwick & Co Ltd | Education | 2013 |
| Hardy Carpenter Limited | Manufacturing | 2024 |
| Harefield Accounting Services Ltd | Professional & scientific | 2014 |
| Hareg Cafe Ltd | Hospitality | 2025 |
| Haregvine Ltd | Arts & recreation | 2025 |
| Harfin Residential Limited | Real estate | 2025 |
| Hargo Cargo Ltd | Professional & scientific | 2025 |