| H & S Thomas Transport Ltd | Transport & logistics | 2011 |
| H & V Builders Ltd | Construction | 2023 |
| H & V Control Services Limited | Manufacturing | 1994 |
| H & X Consultancy Ltd | Professional & scientific | 2025 |
| H a H South West Limited | Construction | 2010 |
| H a Planning Limited | Professional & scientific | 2015 |
| H a T S Fraser Ltd | Real estate | 2020 |
| H Auto Group Ltd | Wholesale & retail | 2025 |
| H Auto Repair Ltd | Wholesale & retail | 2023 |
| H Bardens Property Ltd | Real estate | 2023 |
| H Bismillah Enterprises Limited | Wholesale & retail | 2025 |
| H C Avon & Somerset Construction Ltd | Construction | 2022 |
| H C Property Group Ltd | Real estate | 2023 |
| H C Tree Services Ltd | Administrative & support | 2025 |
| H Churchley Holdings Limited | Financial services | 2026 |
| H Churchley Property Limited | Construction | 2026 |
| H Civils Plant Services Ltd | Administrative & support | 2017 |
| H D W 2007 Limited | Administrative & support | 2007 |
| H Fawd Autos Ltd | Wholesale & retail | 2025 |
| H G H (V S) Limited | Extraterritorial | 2007 |
| H Gardner Limited | Professional & scientific | 2016 |
| H Gill Consultancy Ltd | Professional & scientific | 2023 |
| H J D Properties Ltd | Real estate | 2024 |
| H L Audrain Limited | Health & social care | 2016 |
| H Links Construction Ltd | Construction | 2025 |
| H Lucky Star Limited | Other services | 2011 |
| H M (UK) Ltd | Administrative & support | 2005 |
| H Moorefield Limited | Education | 2015 |
| H Motor Group Ltd | Wholesale & retail | 2023 |
| H R Document Storage Limited | Administrative & support | 2013 |
| H Rock Properties Ltd | Real estate | 2017 |
| H S Pharma (Bristol) Ltd | Wholesale & retail | 2018 |
| H Somerset Barbers Ltd | Other services | 2023 |
| H T Develoments Ltd | Construction | 2025 |
| H V Stars Ltd | Wholesale & retail | 2025 |
| H Y H Retail Ltd | Wholesale & retail | 2017 |
| H&A Business Ltd | Hospitality | 2021 |
| H&A Gems Ltd | Wholesale & retail | 2023 |
| H&A Premium Limited | Hospitality | 2018 |
| H&B Trading Co Ltd | Wholesale & retail | 2025 |
| H&F Fabrications Ltd | Manufacturing | 2023 |
| H&H Capital Limited | Real estate | 2013 |
| H&H Construction Solutions Ltd | Construction | 2018 |
| H&H Food & Wine Limited | Wholesale & retail | 2023 |
| H&H Solutions (UK) Limited | Water & waste | 2014 |
| H&L Bristol Limited | Hospitality | 2023 |
| H&O Recycling Ltd | Wholesale & retail | 2019 |
| H&S First Ltd | Other services | 2023 |
| H&S Nicholas Property Ltd | Real estate | 2024 |
| H&T Fast Food UK Limited | Hospitality | 2024 |
| H&Y Food Ltd | Hospitality | 2024 |
| H&Y Property Management Ltd | Real estate | 2022 |
| H&Z Building Construction Ltd | Construction | 2026 |
| H'Art and Crafts Ltd | Extraterritorial | 2023 |
| H-Bris Limited | Administrative & support | 2019 |
| H. D. G. Construction Limited | Construction | 2003 |
| H. F. Veale & Sons Limited | Wholesale & retail | 1980 |
| H.A. Raselle Limited | Wholesale & retail | 1955 |
| H.A.C Domestic Services Limited | Manufacturing | 2018 |
| H.A.T. Building Services Limited | Construction | 2022 |
| H.B Crowns Ltd | Professional & scientific | 2020 |
| H.E.S (South West) Ltd | Construction | 2024 |
| H.E.T. Hick (South West) Limited | Financial services | 1977 |
| H.G. Harris Funeral Directors Ltd | Extraterritorial | 2023 |
| H.J. Jefferies Limited | Wholesale & retail | 1951 |
| H.J. Williams Limited | Other services | 2014 |
| H.J.Hatfield & Sons Limited | Wholesale & retail | 2007 |
| H.M Heating and Plumbing Ltd | Construction | 2019 |
| H.P.J. (Bristol) Limited | Professional & scientific | 2005 |
| H.R.W. Contractors Limited | | 1989 |
| H.S. Systems Limited | Administrative & support | 1996 |
| H20 (Kingswood) Management Company Limited | Households | 2003 |
| H2B2 Electrolysis Technologies UK Limited | Professional & scientific | 2022 |
| H2GEM Technologies Ltd | Professional & scientific | 2026 |
| H2O Bristol Ltd | Administrative & support | 2018 |
| H3.JIL Ltd | Health & social care | 2017 |
| H4 Results Ltd | Administrative & support | 2014 |
| H5TLR Ltd | Administrative & support | 2025 |
| H7 Energy Limited | Energy | 2013 |
| HA Humphries Ltd | Information & communication | 2022 |
| HA Long Market Limited | Wholesale & retail | 2023 |
| HA Traders Ltd | Wholesale & retail | 2020 |
| Haadi Cars Ltd | Transport & logistics | 2025 |
| Haasz Engineering Solutions Limited | Professional & scientific | 2019 |
| HAB Partners Limited | Manufacturing | 2017 |
| Habibi Catering Ltd | Hospitality | 2025 |
| Habibo Developments Limited | Construction | 2019 |
| Habibo Homes Limited | Real estate | 2017 |
| Habibo Lettings Ltd | Financial services | 2026 |
| Habitat Care Limited | Health & social care | 2009 |
| Habituk Ltd | Health & social care | 2020 |
| Habtaicorp Ltd | Financial services | 2012 |
| HAC Apartments UK Ltd | Real estate | 2024 |
| HAC Cleaning Services UK Ltd | Administrative & support | 2025 |
| Hack the Body Hack the Mind Limited | Arts & recreation | 2020 |
| Hacker Carpentry Limited | Manufacturing | 2023 |
| Hacker Photography Ltd | Professional & scientific | 2015 |
| Hackett Estate Ltd | Construction | 2018 |
| Hackney Plans Ltd | Construction | 2020 |
| Hackney TAP Limited | Hospitality | 2019 |