| Human Factors International Limited | Reading | 1995 |
| Human Family Ltd | Bristol | 2023 |
| Human Immune Health Union | Stafford | 2021 |
| Human Insights Limited | Cardiff | 2021 |
| Human Performance Limited | Marston Moretaine | 2006 |
| Human Rights & Freedom Ltd | London | 2021 |
| Human Rights Commission Limited | Yorkshire | 2001 |
| Human Rights International | London | 2010 |
| Human Star Ltd | London | 2024 |
| Human Systems Hub Limited | Shrewsbury | 2026 |
| Humancipatio Management Ltd | London | 2012 |
| Humancipatio Operations Ltd | London | 2012 |
| Humanforce Limited | Croydon | 2017 |
| Humaniise IT Limited | Chichester | 2017 |
| Humanitarian Leadership Academy | London | 2015 |
| Humankind (HK) | Durham | 2024 |
| Humankind Innovations Limited | Royston | 2025 |
| Humans of Humanity Ltd | London | 2021 |
| Humber Bank Instruments Limited | Grimsby | 2024 |
| Humber Executive Limited | Hull | 2016 |
| Humber Pilotage (C.H.A.) Limited | London | 1894 |
| Humber Scaffolding Ltd | Hessle | 2013 |
| Humberdoucy Sports Centre Limited | Ipswich | 2002 |
| Humberland Limited | London | 1994 |
| Humberside Aggregates Limited | Derby | 2012 |
| Humberside Contracting Limited | Goole | 1989 |
| Humberstone-Garley Limited | Witney | 2006 |
| Humberton One Limited | York | 2015 |
| Humberton Two Limited | York | 2015 |
| Humble Arnold Associates Limited | Hitchin | 2025 |
| Humble PIE Bakery Ltd | Dunkeld | 2019 |
| Humbleward Limited | London | 1982 |
| Humboldt Systems Limited | Pudsey | 2014 |
| Humdehum Limited | Glossop | 2020 |
| Humdrum Skin Limited | Chesham | 2023 |
| Hume House Limited | London | 2006 |
| Humea Advisory Ltd | Northampton | 2025 |
| Hummer Properties Limited | Stockton-On-Tees | 2003 |
| Hummingbird Haven Ltd | Swindon | 2023 |
| Hummingbird Hawkmoth Limited | Cowes | 2019 |
| Hummus Bar Ltd | Ilford | 2017 |
| Humphrey & Stretton Holdings Limited | Hoddesdon | 2001 |
| Humphrey Feeds Limited | Powys | 1966 |
| Humphrey Poultry (Holdings) Ltd | Powys | 2022 |
| Humphrey Pullets Limited | Powys | 2008 |
| Humphries Kirk Services Limited | Dorchester | 2004 |
| HUN Quality Building Ltd | Burnham-On-Crouch | 2016 |
| Hunan MEC Industrial Diamond Co., Ltd. | London | 2021 |
| Huncoat Avenue 13/07/1963 Limited | Congleton | 2014 |
| Hundprosper Advanced Materials Limited | London | 2019 |
| Hundred Acre Safety Limited | Rushden | 2013 |
| Hundred Hills Limited | Newbury | 2021 |
| Hung on YOU Limited | London | 2003 |
| Hungate Road 1964 Limited | Leeds | 2014 |
| Hunger Hill Farm Limited | Chesterfield | 2025 |
| Hungerford Heath Limited | Banbury | 2025 |
| Hungerhill Estates (1994) Limited | Horsham | 1994 |
| Hungershall Partners Limited | Tunbridge Wells | 2017 |
| Hungry House Equestrian Limited | | 2005 |
| Hunjanpensions Ltd | Birmingham | 2024 |
| Hunnington Builders Limited | Lichfield | 2006 |
| Hunnington Developments Limited | Lichfield | 2006 |
| Hunnington Holdings Limited | Birmingham | 2025 |
| Hunny Hive Kibworth Limited | Leicester | 2018 |
| Hunt & Winterbotham Limited | Slaithwaite | 1985 |
| Hunt 4 Jobs Ltd | Cinderford | 2024 |
| Hunt Energies Ltd | Lydney | 2023 |
| Hunt Horse Trailers Limited | Canterbury | 2015 |
| Hunt Skip Hire Limited | Surbiton | 2012 |
| Hunt Wealthcare Ltd | Coventry | 2013 |
| Hunt&Oak Limited | Great Yarmouth | 2017 |
| HUNT4HOLIDAYS Limited | Manchester | 2016 |
| Hunta Lettings Ltd | Cheadle | 2015 |
| Hunter Barrington Investment Management Ltd | Bristol | 2007 |
| Hunter Campbell Estate Agents Ltd | Carrickfergus | 2007 |
| Hunter Hawksley Ltd. | London | 1997 |
| Hunter Maritime Services Ltd | Bordon | 2024 |
| Hunter Services Limited | St Helens | 2004 |
| Hunters Co SEC Ltd | London | 2002 |
| Hunters Contracts Trustee Limited | Dagenham | 2025 |
| Hunters Funeral Directors Limited | Sutton Coldfield | 2001 |
| Hunters Lodge (Lurgan) Ltd | Newry | 2013 |
| Hunters Mobility Services Limited | Sunderland | 2009 |
| Hunters Private Hire Ltd | Blindwells | 2025 |
| Hunters Solutions 2010 Ltd | Northampton | 2010 |
| Hunterville Ltd | Gtr Manchester | 2007 |
| Hunting Ambiance Ltd | London | 2024 |
| Hunting World International Limited | London | 2012 |
| Huntingfields Solutions Ltd | Dunmow | 2022 |
| Huntley Farms 2015 Limited | Crawley | 2015 |
| Hunts (Oxford) Trading Limited | Oxford | 2017 |
| Hunts Gill Wood Limited | Blackpool | 2014 |
| Huntsham Limited | Wells | 2011 |
| Huntsham Lodge Limited | Wells | 2013 |
| Huntsman International Europe Limited | Duxford | 1971 |
| Huntsman Offshore Investments Limited | Duxford | 2010 |
| Huntsman Petrochemicals (UK) Holdings | Duxford | 2005 |
| Huntsman Polyurethanes Sales Limited | Duxford | 1999 |
| Huntsman Trustees Limited | Llanelli | 1994 |
| Huntsman's Quarries Limited | Derby | 1936 |