| HKK Management Ltd | Edinburgh | 2012 |
| Hkkms Power System (UK) Co ., Limited | London | 2019 |
| Hkunclenick, Ltd | London | 2022 |
| HL Design Corp Ltd | London | 2025 |
| HL Limited | Wembley | 2013 |
| Hl&Sl Limited | London | 2022 |
| HL86 Limited | Prestwick | 2023 |
| HLB Law Limited | Ambleside | 2017 |
| HLB Rentals Ltd | Colerne | 2015 |
| HLF at Home Limited | Glasgow | 2024 |
| HLF Devlopments Ltd | Bo'Ness | 2022 |
| HLG Electrical Services Limited | Wallsend | 2024 |
| HLK Technology Co., Ltd | London | 2015 |
| HLK Travel Ltd | Stourport-On-Severn | 2014 |
| HLM Associates Ltd | Kenilworth | 2015 |
| HLM Commercial Services Ltd | London | 2022 |
| Hlm+Ld Employee Trustee Limited | London | 2020 |
| HLN Holdings (Devon) Ltd | Newton Abbot | 2026 |
| Hlocksmiths Ltd | Wood Green | 2026 |
| Hlotel Ltd | Wembley | 2018 |
| HLP Infrastructures Invest Ltd | Dover | 2025 |
| HLP Infrastructures Ltd | Dover | 2025 |
| HLR for DIG Limited | London | 2025 |
| HLV Services Ltd | Orpington | 2024 |
| Hlvb Limited | Pudsey | 2020 |
| HLW Holdings Limited | Newcastle Upon Tyne | 2020 |
| HLY Mining Ltd | Nr. Scunthrope | 2017 |
| Hlyco Trade Limited | Beckenham | 2020 |
| HM Charles III Ltd | Northwood | 2011 |
| HM Ltd | Saffron Walden | 2009 |
| HM Properties Dundee Ltd | Dundee | 2025 |
| HM Racing Ltd | Edenbridge | 2011 |
| HM Secretaries Limited | Aberdeen | 2012 |
| HMA Trading Co Ltd | Birmingham | 2024 |
| HMA Tree Care Limited | Lancaster | 2021 |
| HMC Assets Ltd. | Irvine | 1969 |
| HMC Cars Ltd | Kidderminster | 1972 |
| HMC Improvements Ltd. | Ayrshire | 1969 |
| HMC Packing Limited | Burgh Heath | 2015 |
| HME Minting Limited | Wakefield | 2013 |
| Hmfa Enterprises Limited | Hereford | 2014 |
| HMG (Kinver) Limited | Altrincham | 2019 |
| HMG Building Services (Group) Ltd | Hornchurch | 2021 |
| HMG Manchester Limited | Altrincham | 2017 |
| HMG Prestwich Limited | Altrincham | 2006 |
| HMH Developments Limited | Stockton On Tees | 2018 |
| HMH Homes Limited | Stockton On Tees | 2018 |
| HMI & Partners Limited | London | 2013 |
| HMJ Recruitment Limited | Preston | 2018 |
| HMK Holdings (UK) Ltd | Bury | 2011 |
| HMK Security Ltd | Birmingham | 2022 |
| HML Developments Limited | Bridgend | 2025 |
| HML Hathaways Limited | Richmond | 2004 |
| Hmpa Ltd | London | 2012 |
| Hmpe Ltd | Plymouth | 2018 |
| Hmperopes Ltd | Plymouth | 2018 |
| Hmrm Properties Limited | Dunstable | 2007 |
| HMS Associates Ltd | Ashford | 2013 |
| HMS Law Limited | Alderley Edge | 2011 |
| HMT Corporate Finance Limited | Henley-On-Thames | 2025 |
| HMW Operational Support Limited | Spalding | 2025 |
| HN Ltd | Newmarket | 2009 |
| HN Motion Ltd | London | 2017 |
| HN Performance Group Ltd | Blackburn | 2020 |
| HN Rail Ltd | Manchester | 2004 |
| HNA Trading Ltd | Harrow | 2012 |
| HNB FX Limited | London | 2017 |
| HNC Engineering Ltd | Cullompton | 2022 |
| HNC Limited | Halifax | 2001 |
| HNH Financial Services Holdings Limited | Chorley | 2008 |
| HNR Trading Ltd | Manchester | 2009 |
| HNS Business Services Limited | London | 2013 |
| HNT Delightful Ltd | Manchester | 2024 |
| Hntas Limited | Hitchin | 2025 |
| Hnuoda Marine Services Co., Ltd | Beckenham | 2021 |
| Hnvgr UK Limited | West Midlands, England | 2025 |
| Hoad Group Ltd | Tenterden | 2020 |
| Hoar Marshall Limited | Leeds | 2021 |
| Hoard Hunters Limited | Aylesbury | 2013 |
| Hoardingmaster Ltd | Borehamwood | 2011 |
| HOB Realisations Limited | London | 1893 |
| Hoban Helicopters Limited | Milton Keynes | 2017 |
| Hobart Homes Limited | Leeds | 2015 |
| Hobart Limited | Harrogate | 2025 |
| Hobart Paving Company Limited | Steyning | 1972 |
| Hobbins Consultancy Limited | Warwick | 2025 |
| Hobby Close 1967 Limited | Waterlooville | 2014 |
| Hobby Fish Ltd | Milton Keynes | 2010 |
| Hobbycraft Limited | Braintree | 1972 |
| Hobbymarts Ltd | Nottingham | 2025 |
| Hobbytown Europe Limited | Lenham | 2015 |
| Hobgoblin Music Limited | Burgess Hill | 2008 |
| Hobs Studio Limited | Liverpool | 2012 |
| Hobson Consulting Limited | Great Chesterford | 2019 |
| Hobson's Choice IT Solutions Limited | Shaftesbury | 1998 |
| Hobson's Original Limited | London | 2012 |
| Hoburne Electrical Limited | Christchurch | 1962 |
| Hoburne Farm Caravan Park Limited | Christchurch | 1951 |
| Hoburne Leisure Limited | Christchurch | 1972 |
| Hoburne Second Homes Limited | Christchurch | 1986 |