| Halton PA Support Ltd | Health & social care | 2022 |
| Halton Podcast Studios Limited | Information & communication | 2024 |
| Halton Powder Coating Limited | Manufacturing | 2014 |
| Halton Roofing Limited | Construction | 2021 |
| Halton Stairlifts Limited | Other services | 2012 |
| Halton Table Tennis Limited | Arts & recreation | 2000 |
| Halton View Plastering Services Ltd | Construction | 2024 |
| Halton View Road Stores Limited | Wholesale & retail | 2025 |
| Halton Youth Mixed Martial Arts Community Interest Company | Education | 2025 |
| Halxanbre Ltd | Health & social care | 2025 |
| Hammond Packaging Logistics Limited | Wholesale & retail | 2011 |
| Hampshire Surgical Services Ltd | Health & social care | 2019 |
| Hanaru Limited | Wholesale & retail | 2025 |
| Hanna's Limited | Other services | 2013 |
| Hapin Care Ltd | Health & social care | 2018 |
| Hardhorn Developments & Management Ltd | Construction | 2025 |
| Hardman Office & Commercial Cleaning Ltd | Administrative & support | 2011 |
| Hardshaw Property Partners Ltd | Real estate | 2018 |
| Hargrave Property and Consulting Limited | Construction | 2006 |
| Harringtons Bar & Eatery Limited | Hospitality | 2019 |
| Harris Homesmart Limited | Real estate | 2020 |
| Harrison Contract Tiling Limited | Construction | 2012 |
| Harrison Family Property Ltd | Real estate | 2026 |
| Harrison Homes & Lettings Limited | Real estate | 2019 |
| Harrison Plumbing and Heating Services Ltd | Construction | 2021 |
| Harvest Timber Products Europe Ltd | Wholesale & retail | 2008 |
| Hath Properties Ltd | Real estate | 2021 |
| Haybeno Studios Ltd | Information & communication | 2022 |
| Hayjaygold Ltd | Wholesale & retail | 2025 |
| Hazardous Lighting Solutions Limited | Wholesale & retail | 2018 |
| HB Consultancy & Surveyors Limited | Professional & scientific | 2012 |
| HBS Mechanical Services Ltd | Professional & scientific | 2025 |
| Head 2 Toes (NW) Ltd | Other services | 2017 |
| Headonistic Ltd | Other services | 2025 |
| Healthpass Ltd | Health & social care | 2022 |
| Healthy Heroes Limited | Administrative & support | 2012 |
| Heatable Ltd | Construction | 2013 |
| Heatec Services NW Limited | Construction | 2016 |
| Heatform Markings Ltd | Wholesale & retail | 2021 |
| Heathfield Provisions Limited | Manufacturing | 1997 |
| Heating & Boiler Services Limited | Construction | 2004 |
| Heaton Healthcare Analytics Ltd | Information & communication | 2023 |
| Hector Jude Properties Limited | Real estate | 2022 |
| Helan Properties Limited | Real estate | 1980 |
| Hendal Properties Limited | Real estate | 2014 |
| Henley Court (Whiston) RTM Company Ltd | Households | 2026 |
| Henry's Holiday Lettings Ltd | Real estate | 2022 |
| Heritage Boiler Steam Services Limited | Manufacturing | 2017 |
| Heritage Property North Limited | Real estate | 2025 |
| Hermes Paris Ltd | Other services | 2011 |
| Hermon Holdings Ltd | Real estate | 2018 |
| HESTON10 Ltd | Administrative & support | 2025 |
| Hexagon Housing Ltd | Real estate | 2025 |
| Heycor Chemicals Ltd | Wholesale & retail | 2020 |
| Heyes Baig Property Group Ltd | Real estate | 2025 |
| HGG Limited | Professional & scientific | 2015 |
| HGH Electrical Limited | Construction | 2024 |
| HHH Engineering Ltd | Manufacturing | 2022 |
| HHT Development Limited | Construction | 2015 |
| Hi-Life Music Industries Limited | Hospitality | 2020 |
| Hicks Caddick Holdings Limited | Financial services | 2025 |
| High Performance Chef Ltd | Hospitality | 2024 |
| Highfield (2019) Ltd | Real estate | 2003 |
| Hilal Haircut Ltd | Other services | 2025 |
| Hild Limited | Information & communication | 2009 |
| HIS Mercy Gjmed Company Ltd | Health & social care | 2013 |
| HJT Homes Ltd | Real estate | 2025 |
| HL Property Holdings Ltd | Real estate | 2019 |
| Hobbs Catering Ltd | Hospitality | 2025 |
| Hobo Surfers Ltd | Wholesale & retail | 2021 |
| Hodgkinson Consultancy Services Ltd | Professional & scientific | 2016 |
| Holding Property Partners Ltd | Real estate | 2017 |
| Holfords Roofing Ltd | Construction | 2019 |
| Holldezine Services Limited | Professional & scientific | 2011 |
| Hollie Dowd Fitness Ltd | Arts & recreation | 2025 |
| Holly Marie Psychotherapy Ltd | Health & social care | 2024 |
| Holly Oak Tree Services Limited | Agriculture & fishing | 2017 |
| Hollywood Nails Runcorn Ltd | Other services | 2024 |
| Hollywood Pizza and Burgers Ltd | Hospitality | 2023 |
| Hollywoods Pizza Ltd | Hospitality | 2025 |
| Holm Therapies Ltd | Health & social care | 2024 |
| Holmac Engineering Ltd | Manufacturing | 2008 |
| Holton Networks Ltd | Wholesale & retail | 2024 |
| Holyrood Health and Wellness Ltd | Health & social care | 2025 |
| Home Architectural Ltd | Professional & scientific | 2010 |
| Home From Home (Manchester) Limited | Health & social care | 2003 |
| Home Range Limited | Wholesale & retail | 2004 |
| Honest Cat Limited | Extraterritorial | 2015 |
| Honey Lanee Ltd | Wholesale & retail | 2025 |
| Hope Pharma Services Ltd | Health & social care | 2017 |
| Horns Garage Limited | Wholesale & retail | 2017 |
| Hortiscapes Limited | Professional & scientific | 2007 |
| Hot Steppers Dance Studio Limited | Arts & recreation | 2023 |
| Hotweb Design Limited | Information & communication | 2013 |
| Hough Green Carpet Centre Limited | Wholesale & retail | 2017 |
| Hough Green Hire Limited | Administrative & support | 2007 |
| Hough Green Ltd | Wholesale & retail | 2018 |
| Hough Green Properties Limited | Administrative & support | 2016 |
| Hound and Heritage Ltd | Manufacturing | 2025 |
| Hourglass Solutions Limited | Information & communication | 2009 |