| Higgihaus Capital Ltd | Financial services | 2020 |
| Higgihaus Co-Living (26 Carlton Terrace) Limited | Real estate | 2022 |
| Higgihaus Co-Living (27 Carlton Terrace) Limited | Real estate | 2019 |
| Higgihaus Co-Living (Cromwell ST) Limited | Real estate | 2022 |
| Higgihaus Co-Living (Henrietta ST) Limited | Real estate | 2021 |
| Higgihaus Co-Living (Montpelier) Limited | Real estate | 2021 |
| Higgihaus Co-Living (Stacey Road) Limited | Real estate | 2023 |
| Higgihaus Co-Living Limited | Real estate | 2017 |
| Higgihaus Developments Ltd | Construction | 2020 |
| Higgihaus Management (Asia) Limited | Professional & scientific | 2020 |
| Higgihaus Management Limited | Real estate | 2021 |
| Higgihaus Mentoring Ltd | Professional & scientific | 2012 |
| Higgihaus Operations Ltd | Real estate | 2017 |
| Higgihaus Residential (Balaclava Road) Limited | Real estate | 2021 |
| Higgihaus Residential (Whiteladies Road) Limited | Real estate | 2019 |
| Higgihaus Residential Limited | Financial services | 2021 |
| Higgihaus Serviced Accommodation (107 Bute Street) Limited | Real estate | 2023 |
| Higgihaus Serviced Accommodation Limited | Real estate | 2023 |
| Higgins & Hill Commercials Limited | Wholesale & retail | 2018 |
| Higginson Financial Education Ltd | Education | 2024 |
| Higgs Scaffolding Ltd | Construction | 2024 |
| High Angle Ltd | Wholesale & retail | 2017 |
| High Beam Digital Limited | Professional & scientific | 2023 |
| High Calibre Properties Limited | Real estate | 2018 |
| High Definition Security Ltd | Extraterritorial | 2012 |
| High Goals Ltd | Wholesale & retail | 2023 |
| High Green Properties Ltd | Real estate | 2023 |
| High Growth Knowledge Company Limited | Professional & scientific | 2013 |
| High Hill Farm Limited | Agriculture & fishing | 2021 |
| High Horse Ltd | Arts & recreation | 2014 |
| High Kingsdown (Flats) RTM Company Limited | Households | 2019 |
| High Orbit Media Ltd | Information & communication | 2018 |
| High Peak Healthcare Solutions Ltd | Health & social care | 2022 |
| High Reach Cleaning Limited | Administrative & support | 2023 |
| High Resolution Lighting Limited | Arts & recreation | 2003 |
| High Rollers DND Limited | Information & communication | 2019 |
| High Street Sales Ltd | Wholesale & retail | 2025 |
| High STYLE01 Limited | Wholesale & retail | 2025 |
| High Tide Festival Company Ltd | Arts & recreation | 2022 |
| High Tide Seaweed Ltd | Manufacturing | 2022 |
| High Venture Security Limited | Extraterritorial | 2024 |
| High Voltage Commercial Services Ltd | Professional & scientific | 2024 |
| High Voltage Engineering Systems Ltd | Energy | 2022 |
| High Voltage Grid Services Ltd | Construction | 2024 |
| Highams Recruitment Limited | Administrative & support | 2000 |
| Highbridge Court RTM Company Limited | Households | 2023 |
| Highbridge International HI Ltd | Construction | 2026 |
| Highbridge Wharf Management Limited | Households | 2020 |
| Highcliff Veterinary Practice Limited | Extraterritorial | 2016 |
| Highcover Limited | Households | 1987 |
| Highcroft (Hailsham) Limited | Extraterritorial | 2007 |
| Highdrive Bristol Limited | Construction | 2017 |
| Higher Education Communication Limited | Professional & scientific | 2004 |
| Higher Halwyn Management Company Limited | Other services | 2002 |
| Highfield Associates South West Limited | Financial services | 2022 |
| Highfield Developments (Bristol) Limited | Construction | 2016 |
| Highfirm Limited | Wholesale & retail | 1990 |
| Highgate Capital Holdings Ltd | Financial services | 2026 |
| Highgate Transportation Limited | Professional & scientific | 2011 |
| Highgrove Designs Ltd | Professional & scientific | 2026 |
| Highhill View Properties Ltd | Real estate | 2025 |
| Highland Dental Care Limited | Health & social care | 2006 |
| Highland Logistics LP | | 2011 |
| Highlander Launch Co Limited | Manufacturing | 2025 |
| Highlanders Brothers Construction Ltd | Construction | 2021 |
| Highlife Invest Ltd | Construction | 2025 |
| Highlight PR Ltd | Professional & scientific | 2002 |
| Highline Access Ltd | Construction | 2002 |
| Highline Roofing & Building (South East) Ltd | Construction | 2025 |
| Highline Roofing & Guttering Ltd | Construction | 2024 |
| Highline Ventures Ltd | Real estate | 2022 |
| Highpoint 2000 Ltd | Professional & scientific | 2011 |
| Highpoint 2000 Properties Ltd | Real estate | 2025 |
| Highridge Green Management Company Limited | Extraterritorial | 2007 |
| Highridge House Residents Association Limited | Households | 1983 |
| Highridge Limited | Professional & scientific | 2020 |
| Highspec Property Services Ltd | Administrative & support | 2007 |
| Hightail Entertainment Ltd | Information & communication | 2024 |
| Hightouch Advisory LLP | | 2024 |
| Hightower I.T. Limited | Other services | 2007 |
| Hightower Property Lettings Ltd | Real estate | 2021 |
| Highview (Bristol) Limited | Real estate | 2021 |
| Highview 2004 RTM Company Limited | Households | 2004 |
| Highway Resurfacing Ltd | Other services | 2024 |
| Highway Safety Solutions Traffic Management Ltd | Construction | 2019 |
| Highwayman Court Management Limited | Households | 2015 |
| Highwire Productions Limited | Information & communication | 2016 |
| Highwood House Publishing Ltd | Information & communication | 2004 |
| Highwoods and ST Johns Limited | Health & social care | 2007 |
| Highworth Associates Ltd | Professional & scientific | 2014 |
| Highworth Dental Care Limited | Health & social care | 2008 |
| Highworth Investment Limited | Administrative & support | 2010 |
| Highzone Ltd | Education | 2014 |
| Hignells Stores Limited | Real estate | 1974 |
| HII Property Rentals Ltd | Real estate | 2025 |
| Hiipe Fitness Limited | Other services | 2025 |
| Hilaac Ltd | Professional & scientific | 2018 |
| Hilda Bakery Ltd | Hospitality | 2024 |
| Hill and Co Management Company Limited | Real estate | 2022 |
| Hill Avenue Management Company Limited | Households | 2017 |