| Hayter Staveley Evans Limited | Preston | 2003 |
| Hayton Construction Limited | Carlisle | 2009 |
| Hayward & Green Limited | Henfield | 2005 |
| Hayward and Green Aviation Trading Limited | Henfield | 2002 |
| Hayward Caine Ltd | Old Harlow | 2026 |
| Hayward Coachworks Limited | St Albans | 1998 |
| Hayward Exclusive Homes (Properties) Limited | Loughborough | 2007 |
| Hayward Ingham Limited | Harrogate | 2026 |
| Hayward Tyler Pension Plan Trustees Limited | Beds | 1981 |
| Haywards Heath Bridge Road Centre Limited | London | 2017 |
| Haywood Homes (Wales) CR Limited | Halesowen | 2009 |
| Haywood Property South West Limited | Weston-Super-Mare | 2018 |
| HAZ Holdings Limited | Burntwood | 1999 |
| HAZ Industrial Services Limited | Burntwood | 1993 |
| Hazaay Ltd | Northolt | 2023 |
| Hazco Environmental Limited | Glasgow | 2021 |
| Hazcorp Ltd | Kington | 2016 |
| Hazel Bridge Trading Company Ltd | Manchester | 2026 |
| Hazel Close 1971 Limited | Newton Abbot | 2014 |
| Hazel Data Services Ltd | Twickenham | 2022 |
| Hazel Grove Bathroom Centre Limited | Manchester | 2012 |
| Hazel Management Company Limited | Liskeard | 1992 |
| Hazel Terrace Company Limited | Lisburn | 2019 |
| Hazel Wave Consulting Pros Ltd | Manchester | 2026 |
| HAZEL4D Ltd | Leeds | 2015 |
| Hazelbrook Estate Management Company Limited | South Staffs | 2023 |
| Hazeldowne Properties Limited | London | 2012 |
| Hazelhurst Crescent 1964 Limited | Horsham | 2014 |
| Hazelmark Developments Limited | Leamington Spa | 2001 |
| Hazelmere Homes Limited | London | 2016 |
| Hazelmere Services Ltd | Manchester | 1997 |
| Hazelmoor Ltd | Enfield | 2007 |
| Hazelroyd Limited | London | 2005 |
| Hazels Hedgehogs Limited | Southend-On-Sea | 2014 |
| Hazelton Homes Limited | Rushton | 2013 |
| Hazelwood 1970 Limited | Belper | 2014 |
| Hazelwood Estates (Lcra) Limited | Ascot | 2003 |
| Hazem Electric Bikes Ltd | Hull | 2024 |
| Hazkaz Limited | Cumbria | 2005 |
| Hazlemere Fine Foods Ltd | High Wycombe | 2022 |
| Hazlenut Limited | London | 2005 |
| Hazlewood (Blackditch) Limited | Worksop | 2000 |
| Hazlewood Foods Limited | Worksop | 1942 |
| Hazmirsam Ltd | Tunbridge Wells | 2019 |
| Hazville Ltd | Salford | 2008 |
| Hazza Brown Ltd | Berkhamsted | 2022 |
| Hazzcorp Limited | Leicester | 2015 |
| Hazzy's Hype Ltd | Hayes | 2023 |
| HB Counters Ltd | Benfleet | 2007 |
| HB Heating North East Ltd | Morpeth | 2010 |
| HB International Production Limited | London | 2014 |
| HB Island Limited | Sheffield | 2018 |
| HB Ltd | Newmarket | 2021 |
| HB New Ways Ltd | Manchester | 2024 |
| HB Precision Bearings Limited | Holmfirth | 2014 |
| HB Precision Engineers Limited | Holmfirth | 2014 |
| HB Property Enterprises Limited | Abingdon | 2012 |
| HB Sawston NO.1 Limited | London | 2002 |
| HB Sawston NO.2 Limited | London | 2003 |
| HB Sawston NO.4 Limited | London | 2003 |
| HB Schemes Limited | Bath | 2010 |
| HBB Limited | Lancashire | 1996 |
| HBB Nominee Limited | Lancashire | 2001 |
| HBB Roman Way Management Company Limited | Nelson | 2024 |
| HBC Construction Group Limited | Dronfield | 2025 |
| HBC Contracting Services Limited | Dronfield | 2010 |
| HBI Investment Ltd | Halesowen | 2016 |
| Hbks Services Ltd | Lancaster | 2023 |
| Hblue Textile Co., Ltd | Stafford, | 2011 |
| HBM Installations Ltd | Hyde | 2017 |
| HBO Sweden Limited | London | 2025 |
| HBP Norway Limited | London | 2015 |
| HBS 001 Ltd | Kings Langley | 2007 |
| HBS Access Services Ltd | Wisbech | 2023 |
| HBS Design & Build Limited | Taunton | 2019 |
| HBS Pharmacy Limited | Preston | 2013 |
| HC 1175B Limited | Wythall | 1946 |
| HC 1176C Limited | Wythall | 1975 |
| HC 1182I Limited | Wythall | 1996 |
| HC 1202 Limited | Worcester | 2012 |
| HC 1339 Limited | Cheltenham | 2022 |
| HC 1341 Limited | Cheltenham | 2023 |
| HC 1342 Limited | Cheltenham | 2023 |
| HC 1365 Limited | Worcester | 2025 |
| HC 2019 Limited | Leicester | 2019 |
| HC Homes Group Ltd | London | 2020 |
| HC Machinery Manufacturing Company Limited | Beckenham | 2018 |
| HC Property Management Limited | Farnborough | 1997 |
| HC Venture Ltd | Birmingham | 2023 |
| HC Yacht UK Ltd | London | 2023 |
| HC4L Limited | Canterbury | 2020 |
| HCA NO. 6 Limited | Macclesfield | 2005 |
| HCA Secretaries Limited | Woking | 2018 |
| HCC Ekologika Ltd | London | 2016 |
| HCE Foodservice Equipment Limited | Eastleigh | 2021 |
| Hcellma Ltd | London | 2025 |
| Hcgi Business Brokerage (SW) Ltd | Gloucester | 2019 |
| Hcgi Business Brokerage Ltd | Gloucester | 2016 |
| HCH Limited | Ashbourne | 1996 |
| Hchc Limited | Sutton | 2019 |