| Hallowgrange Limited | Real estate | 1972 |
| Halls Accountants Limited | Professional & scientific | 2007 |
| Halls Dismantling and Removal Ltd | Construction | 2009 |
| Halls Place Rural Enterprises Limited | Hospitality | 2021 |
| Halmut-Dagan Limited | Professional & scientific | 2016 |
| Halo Brands Limited | Wholesale & retail | 2003 |
| Halo Data Limited | Information & communication | 2021 |
| Halo Hair & Beauty (Bristol) Ltd | Other services | 2019 |
| Halo High Speed Limited | Information & communication | 2003 |
| Halo Locksmiths Limited | Other services | 2005 |
| Halo Media Communications Limited | Professional & scientific | 2004 |
| Halo Treatment Rooms Ltd | Other services | 2023 |
| Halo White Beauty Ltd | Wholesale & retail | 2021 |
| Halodays Limited | Real estate | 2021 |
| Halogen Claims Services Limited | Financial services | 2003 |
| Halsbury Court RTM Company Limited | Households | 2013 |
| Halsbury Road Management Company Limited | Households | 2003 |
| Halt Agency Ltd | Professional & scientific | 2020 |
| HAM & Sons Enterprises Ltd | Construction | 2015 |
| HAM Green Properties (PTY) Limited | Real estate | 2003 |
| Hamberly Ltd | Professional & scientific | 2019 |
| Hamble Developments Ltd | Construction | 2026 |
| Hambledons Serviced Apartments Clifton Limited | Real estate | 2006 |
| Hamblin Carpentry Limited | Construction | 2009 |
| Hambly Homes Ltd | Households | 2024 |
| Hambridge Mill Development Company Ltd | Construction | 2019 |
| Hambrook Plumbing and Heating Limited | Construction | 2023 |
| Hambrook RNP Limited | Real estate | 2023 |
| Hamed Amin Ltd | Health & social care | 2021 |
| Hamgreen Properties Ltd | Administrative & support | 2017 |
| Hamia Motors Limited | Wholesale & retail | 2020 |
| Hamid Builders Ltd | Construction | 2025 |
| Hamid Nsubuga Limited | Health & social care | 2021 |
| Hamilton Court Bristol RTM Company Ltd | Households | 2025 |
| Hamilton House Land Limited | Construction | 2023 |
| Hamilton Mccullough Consulting Ltd | Professional & scientific | 2015 |
| Hamilton Neal Limited | Financial services | 2021 |
| Hamilton Platt LLP | | 2006 |
| Hamilton Site Services Ltd | Construction | 2016 |
| Hamilton Specialist Referrals Ltd | Professional & scientific | 2017 |
| Hamilton Stone Design (Cuckfield) Ltd | Wholesale & retail | 2024 |
| Hamilton Stone Design (Haywards Heath) Limited | Professional & scientific | 2003 |
| Hamilton Stone Design (Lindfield) Limited | Wholesale & retail | 2019 |
| Hamiltons Services Ltd | Professional & scientific | 2022 |
| Hamisadah (UK) Limited | Hospitality | 2018 |
| Hamlet Inns Limited | Hospitality | 2021 |
| Hamlin Murray Limited | Health & social care | 2026 |
| Hammer IT Services Ltd | Information & communication | 2023 |
| Hammer on Limited | Construction | 2011 |
| Hammeron Press Ltd | Extraterritorial | 2019 |
| Hammett Investments Limited | Financial services | 1959 |
| Hammond Carpentry Contractors Limited | Extraterritorial | 2023 |
| Hammond Fitness Limited | Arts & recreation | 2025 |
| Hammond Heritage Ltd | Transport & logistics | 2025 |
| Hammond Trading (UK) Limited | Financial services | 2008 |
| Hammonds Development Advisory Limited | Construction | 2025 |
| Hammonds PMS Limited | Professional & scientific | 2019 |
| Hampden 21 Ltd | Real estate | 2020 |
| Hampden Forster Real Estate Ltd | Real estate | 2022 |
| Hampdown Ltd | Real estate | 2016 |
| Hampole Windfarm Limited | Energy | 2012 |
| Hampstead House (Bristol) Management Limited | Households | 2013 |
| Hampstead Stone Limited | Manufacturing | 2017 |
| Hampton & LE Mont Ltd | Professional & scientific | 2024 |
| Hampton Family Medical Services Limited | Health & social care | 2013 |
| Hampton Printing (Bristol) Limited | Manufacturing | 1991 |
| Hampton Tax Advisors LLP | | 2011 |
| Hamrah Gold Ltd | Wholesale & retail | 2025 |
| Hamza Mobiles Limited | Wholesale & retail | 2018 |
| Hamzabrother Services Ltd | Transport & logistics | 2026 |
| HAN Starship Limited | Hospitality | 2025 |
| Hana Beauty Korea Ltd | Wholesale & retail | 2024 |
| Hana Bristol Limited | Hospitality | 2024 |
| Hana News Ltd | Information & communication | 2024 |
| Hanbury Road Estates Ltd | Real estate | 2025 |
| Hancock Software Solutions Limited | Professional & scientific | 2024 |
| Hand Films Limited | Information & communication | 2013 |
| Hand in Hand Festival Community Interest Company | Administrative & support | 2022 |
| Hand-Eye Ltd | Information & communication | 2016 |
| Handicrafts Unique Ltd | Wholesale & retail | 2022 |
| Handkrafted Campers Ltd | Construction | 2018 |
| Handl Agency Ltd | Information & communication | 2023 |
| Handmade Clara Hand Catering Ltd | Hospitality | 2025 |
| Handmade Events Ltd | Administrative & support | 2012 |
| Handmade Happiness Ltd | Extraterritorial | 2022 |
| Handprint Training Limited | Administrative & support | 2026 |
| Hands Down Ltd | Construction | 2019 |
| Hands on Brands Limited | Professional & scientific | 2006 |
| Hands on Stairlifts Services & Repairs Ltd. | Manufacturing | 2016 |
| Handsets Ltd | Other services | 2003 |
| Handy Brand UK Employee Ownership Trustee Ltd | Professional & scientific | 2022 |
| Handy Brand UK Ltd | Manufacturing | 2013 |
| Handy Care Services Limited | Health & social care | 2017 |
| Handy Clean & Green Ltd | Construction | 2020 |
| Handy Development Ltd | Information & communication | 2024 |
| Handy GAS Ltd | Manufacturing | 2019 |
| Handy Helpers Ltd | Agriculture & fishing | 2024 |
| Handy Panda Ltd | Construction | 2025 |
| Handybuddy Limited | Construction | 2024 |
| Handyman & Maintenance (1978) Ltd | Construction | 2018 |