| Halo Stays Ltd | Real estate | 2025 |
| Halo Stone Surfaces Limited | Administrative & support | 2014 |
| Halo Window Dressings Ltd | Wholesale & retail | 2018 |
| Halopeo Limited | Professional & scientific | 2024 |
| Halopeo Payments Ltd | Administrative & support | 2024 |
| Halopeo Solutions Limited | Professional & scientific | 2024 |
| Halotec Global Ltd | Manufacturing | 2023 |
| Halow (Birmingham) | Public administration | 2012 |
| Halstead Properties Ltd | Real estate | 2022 |
| Haltegriff Ltd | Wholesale & retail | 2025 |
| Haly Holding Limited | Financial services | 2020 |
| HAM and Egging IT Ltd | Hospitality | 2026 |
| HAM Baker Penstocks Limited | Manufacturing | 2022 |
| HAM Baker Treatment Limited | Manufacturing | 2022 |
| HAM, Cheese & Pickle Limited | Professional & scientific | 2010 |
| Hama Development Limited | Construction | 1985 |
| Hama Holdings Limited | Real estate | 2015 |
| Hama Homes Limited | Households | 2012 |
| Hama Investments Limited | Administrative & support | 2007 |
| Hama Medics Limited | Professional & scientific | 2015 |
| Hama Partitioning Contractors Limited | Other services | 2018 |
| Hamad Enterprises Ltd | Wholesale & retail | 2026 |
| Hamada Logistics Ltd | Transport & logistics | 2022 |
| Hamahart Developments Limited | Households | 2013 |
| Hamar Housing Ltd | Real estate | 2025 |
| Hamaran 9JA Ltd | Hospitality | 2019 |
| Hamard Catering Management Services Limited | Extraterritorial | 1978 |
| Hambleton IT Ltd | Information & communication | 2026 |
| Hambros Estates Limited | Hospitality | 2009 |
| Hamcr Limited | Real estate | 2022 |
| Hamd House Nursery Alum Rock Ltd | Education | 2022 |
| Hamd House Nursery Bordesley Green Ltd | Education | 2022 |
| Hamd House Nursery Small Heath Ltd | Education | 2022 |
| Hamd House Nursery Sparkhill Ltd | Education | 2022 |
| Hamd House School Ltd | Education | 2013 |
| Hamdan Associates Limited | Construction | 2025 |
| Hameda Limited | Financial services | 2013 |
| Hameen Ltd | Wholesale & retail | 2025 |
| Hamid Restaurant Ltd | Hospitality | 2025 |
| Hamida Property & Co Ltd | Real estate | 2025 |
| Hamilton Apps UK Limited | Wholesale & retail | 2017 |
| Hamilton Assets Holdings Limited | Financial services | 2024 |
| Hamilton Consultancy (U.K) Ltd | Other services | 2022 |
| Hamilton Court (Moseley) Management Company Limited | Households | 1992 |
| Hamilton Grey Heritage Services Limited | Professional & scientific | 2022 |
| Hamilton Leasing Ltd | Administrative & support | 2025 |
| Hamilton Propertiez Ltd | Wholesale & retail | 2017 |
| Hamilton Property Solutions Ltd | Real estate | 2020 |
| Hamilton Psychology Services Limited | Education | 2018 |
| Hamilton Rand Ltd | Manufacturing | 2017 |
| Hamilton RAND1 Ltd | Manufacturing | 2022 |
| Hamilton Robotics Limited | Extraterritorial | 2016 |
| Hamilton Sales & Service UK Ltd | Professional & scientific | 1987 |
| Hamilton Services Limited | Real estate | 2024 |
| Hamilton Tole Limited | Professional & scientific | 2021 |
| Hamilton Trader Ltd | Manufacturing | 2012 |
| Hamilton Wellness Limited | Health & social care | 2023 |
| Hamilton Wharf Residents Management Company Limited | Households | 2025 |
| Hamiltons Elebe Limited | Administrative & support | 2016 |
| Hamiltons Housing Ltd | Real estate | 2025 |
| Hamlatul Bader World Travel Ltd | Administrative & support | 2017 |
| Hamlet Catering Limited | Administrative & support | 2000 |
| Hamlet Milton Finance Ltd | Financial services | 2018 |
| Hamlets Housing Ltd | Real estate | 2025 |
| Hamlin Fistula UK | Professional & scientific | 2013 |
| Hammad Mustafa Ltd | Wholesale & retail | 2025 |
| Hammad Zafar Ltd | Wholesale & retail | 2025 |
| Hammco Distributions Limited | Wholesale & retail | 2024 |
| Hammco Properties Limited | Real estate | 2025 |
| Hammelec Limited | Construction | 2016 |
| Hammermega Limited | Professional & scientific | 1912 |
| Hammock Management Ltd | Real estate | 2019 |
| Hammock Properties Ltd | Real estate | 2019 |
| Hammond Lubricants and Chemicals Limited | Wholesale & retail | 2002 |
| Hammond Time-Share Limited | Professional & scientific | 1982 |
| Hammonds (UK) Limited | Extraterritorial | 2002 |
| Hammonds Group Limited | Professional & scientific | 2008 |
| Hammonds Limited | Professional & scientific | 2009 |
| Hamna Holdings Ltd | Financial services | 2020 |
| Hamnah Limited | Wholesale & retail | 2021 |
| Hamock Housing Limited | Real estate | 2022 |
| Hamock Investments Ltd | Households | 2024 |
| Hamoodi Consultancy Ltd | Professional & scientific | 2020 |
| Hampden Estates Limited | Real estate | 2020 |
| Hamper in a Box Ltd | Wholesale & retail | 2023 |
| Hampshire Court Ltd | Real estate | 2019 |
| Hampson Haulage Limited | Transport & logistics | 1980 |
| Hampson Investments (West Bromwich) Limited | Professional & scientific | 2004 |
| Hampson Silks Limited | Wholesale & retail | 1991 |
| Hampton & Finch Ltd | Wholesale & retail | 2025 |
| Hampton Aircraft Finance Limited | Financial services | 2025 |
| Hampton Aston Ltd | Real estate | 2026 |
| Hampton Blinds Ltd | Wholesale & retail | 2024 |
| Hampton Court Flats Management Company Ltd | Households | 2016 |
| Hampton Court Houses Management Company Ltd | Households | 2016 |
| Hampton Green the Pavilion Management Company Ltd | Households | 2021 |
| Hampton Hair Limited | Other services | 2024 |
| Hampton Housing Group Ltd | Hospitality | 2023 |
| Hampton in Arden Stores Limited | Information & communication | 2024 |
| Hampton Management Services Ltd | Real estate | 2024 |