| Halsnead Zero Bills Village SPV Limited | Health & social care | 2021 |
| Hamilton Lane Management Limited | Real estate | 1999 |
| Hamilton Square Brokers Ltd | Wholesale & retail | 2019 |
| Hamilton Square Properties Limited | Real estate | 2020 |
| Hampden Joinery & Building Services Ltd | Construction | 2018 |
| Hampton Stone Properties Ltd | Real estate | 2019 |
| Handan Educational Psychology Ltd | Health & social care | 2026 |
| Haneng Limited | Professional & scientific | 1997 |
| Harbord and Dixon Limited | Transport & logistics | 1905 |
| Harbour Hospitality Advisors Ltd | Construction | 2024 |
| Hard HAT Logistics Limited | Arts & recreation | 2001 |
| Hardhitters Amateur Boxing Club C.I.C. | Health & social care | 2023 |
| Harding Motor Company Limited | Wholesale & retail | 1991 |
| Hardisty CRN Ltd | Construction | 1997 |
| Hardys Events and Catering Ltd | Hospitality | 2017 |
| Hargrave Mews Chester Management Company Limited | Real estate | 2018 |
| Harrowgate Pierce Ltd | Administrative & support | 2026 |
| Harry James Music Ltd | Arts & recreation | 2025 |
| Harvey Lonsdale Coaching Ltd | Health & social care | 2025 |
| Harya Construct Ltd | Construction | 2024 |
| Hatch Merseyside CIC | Education | 2014 |
| Hatsu House Ltd | Real estate | 2018 |
| Havenstead Properties Limited | Real estate | 2024 |
| Havlo Ltd | Information & communication | 2023 |
| Hayhoe Limited | Professional & scientific | 2020 |
| HB Firstline Motors Ltd | Wholesale & retail | 2026 |
| Hbnm Ltd | Real estate | 2023 |
| HD Car Wash Birkenhead Ltd | Administrative & support | 2025 |
| Health and Business Consulting Limited | Professional & scientific | 1990 |
| Heap & Partners Limited | Manufacturing | 1924 |
| Heart 4 Refugees CIC | Health & social care | 2021 |
| HEATPUMPS4HOMES Ltd | Construction | 2020 |
| Heezz Ltd | Hospitality | 2025 |
| Heliored Limited | Health & social care | 2025 |
| Helly's Dessert & Pizza Ltd | Hospitality | 2025 |
| Henderson Ford Limited | Real estate | 2023 |
| Hendre Coed Limited | Hospitality | 1969 |
| HER Thirties Ltd | Professional & scientific | 2024 |
| Heritage Demolition Ltd | Administrative & support | 2018 |
| Hero Food Ltd | Construction | 2019 |
| HESKY1111 Limited | Arts & recreation | 2025 |
| Heslor Holdings Ltd | Financial services | 2022 |
| Heslor Investments Ltd | Real estate | 2022 |
| Heslor Ltd | Construction | 2013 |
| Heslor STS Ltd | Real estate | 2024 |
| Heslor Styles Ltd | Real estate | 2025 |
| Hestian Homeware Ltd | Wholesale & retail | 2025 |
| Heswall Construction Ltd | Construction | 2022 |
| Heswall Golf Shop Ltd | Arts & recreation | 2014 |
| HF Capital Ltd | Financial services | 2025 |
| HH Valet Limited | Administrative & support | 2025 |
| HI 387 Ltd | Hospitality | 2024 |
| HI Marketing (UK) Ltd | Professional & scientific | 2014 |
| Hi-Impact Holdings Limited | Financial services | 2022 |
| Hide Labs Leather Care Ltd | Other services | 2025 |
| HIE Studio Ltd | Other services | 2025 |
| Higgins & Co Lawyers Limited | Administrative & support | 2015 |
| High Ceiling Investments Ltd | Real estate | 2025 |
| High Oaks Properties Limited | Real estate | 2024 |
| Highcock Holdings Ltd | Real estate | 2023 |
| Highcock Orthopaedics Limited | Health & social care | 2022 |
| Highcove Estates Limited | Other services | 2016 |
| Highvis Logistics Limited | Professional & scientific | 2010 |
| Hilbre Projects LLP | | 2016 |
| Hills Cards Limited | Wholesale & retail | 2014 |
| Hire & Storage Ltd | Real estate | 2025 |
| HLP Legal Ltd | Professional & scientific | 2019 |
| HLT Beauty Ltd | Other services | 2026 |
| Hmaw Residential Ltd | Real estate | 2018 |
| HMH Projects Ltd | Wholesale & retail | 2025 |
| HN Construction Ltd | Construction | 2017 |
| Hodstore Services Ltd | Wholesale & retail | 2017 |
| Hoey Jones Holdings Ltd | Real estate | 2020 |
| Holdenby Ltd | Wholesale & retail | 2020 |
| Holdings by G Ltd | Other services | 2024 |
| Holiferm IP Limited | Administrative & support | 2022 |
| Holiferm Limited | Manufacturing | 2018 |
| Holiferm Manufacturing Limited | Manufacturing | 2021 |
| Holiferm Services Limited | Administrative & support | 2022 |
| Holiferm Technology Limited | Professional & scientific | 2022 |
| Holland Shellfish International UK Ltd | Professional & scientific | 1995 |
| Hollins HEY Management Limited | Real estate | 2024 |
| Hollyfold Barns Management Company Limited | Households | 2026 |
| Hollyfold Farm Ltd | Construction | 2020 |
| Holt Allison & Co Ltd | Administrative & support | 2023 |
| Home and Commercial Projects Limited | Construction | 2022 |
| Homeclean Merseyside Limited | Administrative & support | 2017 |
| Hong Wang Supermarket Limited | Wholesale & retail | 2023 |
| Hooked on Wrestling Limited | Information & communication | 2026 |
| Horizon Property Group Limited | Real estate | 2019 |
| Horizon Publications Limited | Information & communication | 1996 |
| Horizons Independent School Ltd | Education | 2024 |
| HORNBY50 Limited | Hospitality | 2018 |
| Horti Landscapes Limited | Administrative & support | 2008 |
| Hospitality Equipment Supplies Limited | Hospitality | 1986 |
| Hospitality Investment Group Ltd | Manufacturing | 2023 |
| Houlihans Variety Club Ltd | Hospitality | 2023 |
| House & Hughes Associates Limited | Administrative & support | 2019 |
| House Gate Properties Ltd | Real estate | 2019 |
| House of Beauty by GIA Ltd | Hospitality | 2026 |