| Gylemuir Properties Limited | Real estate | 2020 |
| Gym and Clinic Ltd | Health & social care | 2025 |
| Gym Juniors (Holdings) Ltd | Arts & recreation | 2022 |
| Gym Juniors Ltd | Arts & recreation | 2018 |
| Gym Progress Ltd | Extraterritorial | 2025 |
| Gymcare Solutions Ltd | Arts & recreation | 2024 |
| Gymfit Expert LP | | 2015 |
| Gymnastics Scotland Ltd | Extraterritorial | 2011 |
| Gynaecology Plus Limited | Health & social care | 2023 |
| Gynaecology Scotland Limited | Health & social care | 2024 |
| Gyre and Gimble Ltd | Financial services | 2025 |
| Gyro Hero Ltd | Hospitality | 2025 |
| GZ Legal Ltd | Professional & scientific | 2020 |
| H & a Graphic Design Limited | Professional & scientific | 2005 |
| H & H Investment Management Ltd | Extraterritorial | 2012 |
| H & Jasmine Co Ltd | Wholesale & retail | 2026 |
| H & N (Holdings) Ltd | Administrative & support | 2015 |
| H & N Developments LLP | | 2012 |
| H a Investments Ltd | Real estate | 2025 |
| H a West Medical Limited | Manufacturing | 2003 |
| H Baker Accountant Limited | Professional & scientific | 2022 |
| H Electrics (Edinburgh) Ltd | Construction | 2017 |
| H Gold Property Company Ltd | Real estate | 2025 |
| H J S Holdings Limited | Arts & recreation | 2019 |
| H Jung Script Ltd | Administrative & support | 2024 |
| H Maclean Limited | Health & social care | 2007 |
| H Mcdonald Decorating Services Ltd | Construction | 2023 |
| H N S Cart Limited | Extraterritorial | 2021 |
| H S LAD Ltd. | Wholesale & retail | 2018 |
| H S Plumbing & Heating (Scotland) Limited | Construction | 2017 |
| H Services International LP | | 2022 |
| H Transport Ltd | Transport & logistics | 2025 |
| H&A Barrel Management UK Limited | Administrative & support | 2022 |
| H&C Consulting LP | | 2016 |
| H&F Nugent 1 Limited | Financial services | 2012 |
| H&F Nugent 2 Limited | Financial services | 2012 |
| H&F Nugent 3 Limited | Financial services | 2012 |
| H&F Nugent 4 Limited | Financial services | 2012 |
| H&H & Co Consultants Limited | Energy | 2020 |
| H&H (EDI) Ltd | Real estate | 2015 |
| H&H Alliance LP | | 2017 |
| H&H Contracts (EDI) Ltd | Construction | 2023 |
| H&H Family Ltd | Other services | 2025 |
| H&H Glasgow Ltd | Administrative & support | 2014 |
| H&K Sellers Ltd | Wholesale & retail | 2026 |
| H&L Estate Agency Limited | Real estate | 2020 |
| H&N 786 Ltd | Real estate | 2023 |
| H&N Building Construction Ltd | Construction | 2023 |
| H&R Cleaning Services Ltd | Administrative & support | 2024 |
| H&V Group Holdings Ltd | Construction | 2015 |
| H-Tech Electrical Ltd | Construction | 2023 |
| H. Blackhall Developments (Scotland) Limited | Construction | 2011 |
| H.A.B. Alpha Capital LP | | 2016 |
| H.A.C Joinery Ltd | Construction | 2024 |
| H.B. Taxis Ltd. | Transport & logistics | 1999 |
| H.D.A. Construction Limited | Wholesale & retail | 1996 |
| H.G. Mortgages Limited | Financial services | 2004 |
| H.J. Investment Properties & Co | | 2007 |
| H.J. Partnership Limited | Real estate | 1992 |
| H.W.Anderson Holding Company Ltd | Professional & scientific | 2014 |
| H.W.Anderson Ltd | Administrative & support | 2013 |
| H2 AI LAB Ltd | Professional & scientific | 2026 |
| H2 Green Ltd | Energy | 2020 |
| H20 CH4 Plumbing + Heating Limited | Construction | 2019 |
| H2COSLP Ltd | Construction | 2024 |
| H2ENERGYUK Limited | Professional & scientific | 2020 |
| H2EP IV LLP | | 2014 |
| H2L Properties Ltd | Real estate | 2020 |
| H2O Fire Sprinklers Limited | Construction | 2010 |
| H2OLOGY Limited | Construction | 2007 |
| H2STAY Ltd | Real estate | 2024 |
| H2TEC Limited | Manufacturing | 2017 |
| H3 Property Scotland Ltd | Real estate | 2018 |
| HA Aberdeen Ltd | Hospitality | 2018 |
| HA Akbar Properties Ltd | Real estate | 2024 |
| HA Fife Ltd | Hospitality | 2018 |
| HA Painter and Decorator Ltd | Construction | 2020 |
| HA Spice Food Limited | Hospitality | 2019 |
| Haar Architects Ltd | Professional & scientific | 2010 |
| Haar Books and Coffee Ltd | Wholesale & retail | 2022 |
| Haar Creative Ltd | Information & communication | 2025 |
| Habeebee Holdings Ltd | Financial services | 2025 |
| Habib Ahmad Consultancy Limited | Wholesale & retail | 2025 |
| Habibah (Edinburgh) Ltd | Hospitality | 2017 |
| Habibiedinburgh Ltd | Wholesale & retail | 2025 |
| Habitat Assessment & Restoration Ltd | Professional & scientific | 2024 |
| Habitat Studios Ltd | Real estate | 2017 |
| Hablive Solutions LP | | 2013 |
| Habu Investments Limited | Other services | 2022 |
| Hachi Co-Investment I LP | | 2020 |
| Hacienda Developments Ltd | Real estate | 2021 |
| Hackland + Dore Architects Limited | Professional & scientific | 1995 |
| Hactic Ltd | Information & communication | 2022 |
| HAD Capital Limited | Other services | 2020 |
| HAD Holdings LP | | 2016 |
| Hadal Zone Ltd | Professional & scientific | 2022 |
| Hadden Construction Holdings Limited | Financial services | 2012 |
| Hadden Farm Limited | Agriculture & fishing | 2018 |
| Hadden Rankin Property Management Limited | Other services | 2012 |
| Haddington Care Ltd | Health & social care | 2016 |