| Halls Property Development Limited | Heald Green | 2016 |
| Halls Removals Ltd | Wigan | 2020 |
| Halls the Chemist Limited | Peterborough | 2009 |
| Hallsville Quarter (Phase 2) Residents Company Limited | Borehamwood | 2014 |
| Hallsville Quarter 4 Limited | London | 2014 |
| Hallview Property Management Company Limited | Portstewart | 2005 |
| Halmond Limited | Surrey | 1989 |
| Halo Aerospace Training Limited | Morecambe | 2017 |
| Halo Angel Co., Ltd | Cardiff | 2021 |
| Halo Bathrooms and Interiors Ltd | Newtown | 2020 |
| Halo Health & Safety Solutions Ltd | Bradford | 2025 |
| Halo Heating South Ltd | Cranleigh | 2024 |
| Halo Home Support Limited | Sittingbourne | 2024 |
| Halo Nominees Ltd | London | 2003 |
| Halo Pet Products Limited | Derry | 2008 |
| Halo Protect Limited | Kington | 2025 |
| Halo Vapour Co Limited | Swansea | 2022 |
| Halo Vertical Fitness Ltd | Accrington | 2010 |
| Haloskins Marketplace Ltd | Beckenham | 2024 |
| Haloumiere Ltd | Thatcham, | 2011 |
| Haloview Limited | London | 2018 |
| Halsbury Homes (Plumstead) Limited | Norwich | 2021 |
| Halsnead Land Two Limited | Northwich | 2025 |
| Halsnoey Kontroll Limited | London | 2009 |
| Halsta Akeri Limited | London | 2023 |
| Halsta Investment Limited | London | 2023 |
| Halstead Glass Limited | Halstead | 2010 |
| Halsteads Management Limited | Preston | 2018 |
| Halsun International Limited | Kington | 2005 |
| Halton Brook Avenue 1959 Limited | Runcorn | 2014 |
| Halton Nominee Co 1 Limited | Slough | 2017 |
| Halton Nominee Co 2 Limited | Slough | 2017 |
| Halton Properties Limited | Tring | 2008 |
| Halvergate Limited | Salford | 1995 |
| Halvexis for Services Limited | Manchester | 2026 |
| Halyard Maritime Limited | London | 2020 |
| HAM1LTON Limited | Harrogate | 2020 |
| Hamac Imports Limited | Ballymena | 2007 |
| HAMALU-4-WELLE Ltd | Manchester | 2023 |
| Hamandi Enterprises Limited | Banbury | 2025 |
| Hamard Catering Management Services Limited | Birmingham | 1978 |
| Hamard Group Limited | Rubery Birmingham | 1985 |
| Hamati Ltd | Cheadle | 2024 |
| Hamaton (Europe) Limited | Whetstone | 2014 |
| Hambert Management Ltd | Edinburgh | 2016 |
| Hambledon Road Management Limited | Winchester | 2006 |
| Hambledon Trees Limited | Waterlooville | 2022 |
| Hambleton Structures Limited | Richmond | 1996 |
| Hambo House Ltd | Plymouth | 2024 |
| Hambridge Homes Wavertree Court Limited | Sevenoaks | 2013 |
| Hambrook & Johns Limited | Sutton Coldfield | 1965 |
| Hamburger Ltd | Harrogate | 2015 |
| Hamc Ashfield Ltd | Sutton In Ashfield | 2011 |
| Hamco Flooring Ltd | Bourne | 2014 |
| Hameau DE Charpenay Limited | Clowne | 1991 |
| Hameau Limited | London | 2016 |
| Hamer Caravans Limited | Telford | 2018 |
| Hamerville Events Limited | Watford | 2012 |
| Hamerville Online Media Limited | Watford | 2012 |
| Hamill Court (Management Company) Limited | Chichester | 2008 |
| Hamilton & Hall Ltd | Manchester | 2023 |
| Hamilton & Young Limited | Glasgow | 2018 |
| Hamilton 1966 Limited | Bangor | 2013 |
| Hamilton and James Ltd | Huddersfield | 2019 |
| Hamilton Arnold Consulting Limited | Axbridge | 1993 |
| Hamilton Associates Ltd | Hungerford | 2011 |
| Hamilton Avenue 1963 Limited | Glasgow | 2014 |
| Hamilton Bradford Ltd | Sale | 2013 |
| Hamilton Charles Associates Ltd | Hucknall | 2018 |
| Hamilton Construction Services Limited | Petworth | 1994 |
| Hamilton Coopers Limited | Maidstone | 2009 |
| Hamilton Grinley Ltd | Farnborough | 2012 |
| Hamilton Homeware Ltd | Canterbury | 2024 |
| Hamilton House Group Limited | Longhope | 1999 |
| Hamilton House International Limited | Longhope | 1999 |
| Hamilton House Leisure Limited | Longhope | 1999 |
| Hamilton Imperial Properties Limited | Poole | 2010 |
| Hamilton Locke & Co. Limited | Manchester | 2007 |
| Hamilton Lunn Limited | Hayling Island | 2014 |
| Hamilton Manufacturing Co. Ltd | Colchester | 2015 |
| Hamilton Plant Limited | Hurlford | 2010 |
| Hamilton Robotics Limited | Birmingham | 2016 |
| Hamilton Square Limited | Worcester | 1998 |
| Hamilton West Limited | Harrogate | 2025 |
| Hamilton-Cook Limited | Louth | 2008 |
| Hamish Dewar Conservation Limited | Southampton | 1999 |
| Hamlet House RTM Company Limited | Stanmore | 2014 |
| Hamlet Motor Company Ltd | Neston | 2025 |
| Hamlet's Honey Farm Limited | Stroud | 1995 |
| Hamlett Holdings Limited | Cheadle | 2021 |
| Hamlyn Place Management Company Limited | Hereford | 2017 |
| Hammad Sarwar Properties Ltd | Kingswinford | 2020 |
| Hamme Construction Limited | High Wycombe | 1995 |
| Hammer & Chisel Ltd | Herts | 2015 |
| Hammer & Kendall Limited | London | 1999 |
| Hammer and Bricks Limited | Whitstable | 2023 |
| Hammer Holdings Group Limited | London | 2007 |
| Hammered (SW) Limited | Taunton | 2025 |
| Hammerhill Consultancy Ltd | Edinburgh | 2024 |
| Hammeron Press Ltd | Bristol | 2019 |