| Hantapara Property Company Ltd. (the) | Real estate | 1960 |
| Haoran Ltd | Hospitality | 2024 |
| Happy Home Improvements Dundee Ltd | Construction | 2025 |
| Harasdale Limited | Real estate | 2026 |
| Harbourside Grill Ltd | Hospitality | 2015 |
| Harbro Events Ltd | Hospitality | 2017 |
| Harbyn Consulting Limited | Professional & scientific | 2011 |
| Hard Grind Ltd | Professional & scientific | 2015 |
| Harecairn Contracts Limited | Construction | 2003 |
| Hargreaves MAY Ltd | Real estate | 2026 |
| Harland (UK) Ltd | Real estate | 2014 |
| Harland Property Investments Ltd | Real estate | 2015 |
| Harlequin Motors Dundee Ltd | Energy | 2020 |
| Harlequins Dundee Ltd | Hospitality | 2024 |
| Harley’S Dundee Ltd | Hospitality | 2026 |
| Harmonia Products Ltd | Wholesale & retail | 2025 |
| Harmony Homes Estate Agency Ltd | Real estate | 2023 |
| Harnley Express L.P. | | 2015 |
| HARPS16 Ltd | Transport & logistics | 2025 |
| Harridge House Removals Ltd | Transport & logistics | 2026 |
| Harrington Construction Limited | Construction | 1982 |
| Harrington Projects Ltd | Real estate | 2024 |
| Harrington Vale Group Ltd | Other services | 2026 |
| Harris Properties Scotland Limited | Extraterritorial | 2023 |
| Harry's House London Ltd | Wholesale & retail | 2025 |
| Harte Capital Ltd | Households | 2021 |
| Harvmac Contracting Limited | Manufacturing | 2014 |
| Hashmi Taxis Ltd | Transport & logistics | 2023 |
| HASHTAGMD9 Ltd | Wholesale & retail | 2025 |
| Hasnain Cabs Ltd | Transport & logistics | 2025 |
| Hassan & Hussain Healthcare Ltd | Health & social care | 2020 |
| Hassan Cabs Ltd | Transport & logistics | 2025 |
| Haston & Krol Ltd | Wholesale & retail | 2021 |
| Hata Cafe Limited | Hospitality | 2020 |
| Hathaway Lane Limited | Administrative & support | 2010 |
| Hatten Engineering Limited | Administrative & support | 2013 |
| Haughlands Properties Limited | Real estate | 2002 |
| Haus Hospitality Manchester Ltd | Other services | 2024 |
| Hausstudio Properties Limited | Real estate | 2025 |
| Haut Consultancy Limited | Health & social care | 2023 |
| Haute LC Ltd. | Wholesale & retail | 2025 |
| Haven Quantech (2013) Ltd | Administrative & support | 2013 |
| Hawk Food Ltd | Hospitality | 2025 |
| Hawker IT Services Limited | Information & communication | 2012 |
| Hawkes Health (UK) Limited | Professional & scientific | 2013 |
| Hawkhill Foods Ltd | Hospitality | 2025 |
| Hawkhill Therapeutics Limited | Professional & scientific | 2025 |
| Hawley Window Cleaning Ltd | Administrative & support | 2024 |
| Haxston Limited | Wholesale & retail | 2019 |
| Hayat Brothers Ltd | Wholesale & retail | 2009 |
| Hayburg Systems L.P. | | 2015 |
| Hayden Risk Ltd | Administrative & support | 2022 |
| Hayes Engineering Ltd | Manufacturing | 2019 |
| Haymarket Trustees (NO.1) Limited | Professional & scientific | 2023 |
| Hays Properties Limited | Real estate | 2003 |
| Hayston Joiners Ltd | Manufacturing | 2020 |
| Hazprev Safety Ltd | Construction | 2023 |
| HB Mediserve Limited | Real estate | 2020 |
| HBG Aesthetics Ltd | Health & social care | 2025 |
| HBY Renewable Energy Ltd | Energy | 2016 |
| HCH Express Ltd | Hospitality | 2015 |
| HD Fish Merchants Ltd | Wholesale & retail | 2025 |
| HDF Investments Ltd | Real estate | 2019 |
| HDF Properties Ltd | Real estate | 2018 |
| HE Luxury Bags Ltd | Wholesale & retail | 2024 |
| Heal Health Consultation Clinic Ltd | Health & social care | 2021 |
| Heal Physiotherapy Limited | Health & social care | 2012 |
| Healherbz Ltd | Health & social care | 2013 |
| Healing ALL Nations Limited | Health & social care | 2004 |
| Healing Scotland Limited | Health & social care | 2004 |
| Health & Safety for Business Ltd | Professional & scientific | 2018 |
| Healthcare Europe (Scotland) Limited | Health & social care | 2009 |
| Healthcare Solutions Scotland Limited | Other services | 2023 |
| Heamount Trading Global Limited | Wholesale & retail | 2026 |
| Heart Land (Highland) LLP | | 2011 |
| Heather Investments Limited | Construction | 2020 |
| Heather Street Food Ltd | Manufacturing | 2020 |
| Heating Dynamics Limited | Construction | 2025 |
| Hedges Developments Limited | Real estate | 2005 |
| Heero Technologies Limited | Information & communication | 2021 |
| Hegarty Homes Ltd | Real estate | 2021 |
| Heightec Solutions Ltd | Energy | 2024 |
| Heilan COO Commercial Limited | Real estate | 2026 |
| Heilan COO Trading Limited | Wholesale & retail | 2026 |
| Heisenberg Consulting Ltd | Professional & scientific | 2025 |
| Heist Records Ltd | Education | 2018 |
| Helio-Flare Limited | Mining & quarrying | 2013 |
| Hell for Leather Golf Ltd | Manufacturing | 2021 |
| Hello Fresh Bishopbriggs Limited | Hospitality | 2017 |
| Hello Fresh Central Limited | Hospitality | 2017 |
| Hello Fresh Darnley Limited | Hospitality | 2017 |
| Hello Fresh Motherwell Limited | Hospitality | 2017 |
| Hello Fresh Renfield Limited | Hospitality | 2017 |
| Hello Fresh Sauchiehall Limited | Hospitality | 2017 |
| Helm Training Limited | Education | 1986 |
| Help for Kids | Administrative & support | 2011 |
| Helping Hands Tayside Ltd | Administrative & support | 2024 |
| Henderson & Dick Designs Limited | Manufacturing | 2004 |
| Henderson Electrical Scotland Ltd | Construction | 2021 |
| Henderson Gray Limited | Other services | 2005 |