| Guthrie Wealth Consultancy Ltd | Financial services | 2019 |
| H & T Bioseed Limited | Agriculture & fishing | 2019 |
| Habibi Studios Ltd | Hospitality | 2022 |
| Halfsize Ltd | Professional & scientific | 2021 |
| Halley Garden Services Ltd | Administrative & support | 2024 |
| Hamilton Prime Properties Ltd | Real estate | 2024 |
| Handicabs (Lothian) Ltd | Transport & logistics | 1982 |
| Hanica Wealth Management Limited | Financial services | 2020 |
| Hans Buildings Ltd | Construction | 2022 |
| Hans Investments Ltd | Real estate | 2019 |
| Heavyweight Artwork Limited | Professional & scientific | 2012 |
| Heritage Masonry Scot Ltd | Manufacturing | 2025 |
| Hestia Mechanical Building Services Limited | Construction | 2018 |
| Highland COW Productions Ltd | Information & communication | 2019 |
| Highlander Distribution Ltd | Information & communication | 2012 |
| Hillend Car Wash and Storage Limited | Administrative & support | 2025 |
| Hillview Healthcare Limited | Health & social care | 2020 |
| Hillwood Investments Limited | Extraterritorial | 1907 |
| Historic Ecosse Limited | Extraterritorial | 2005 |
| Holyrood Recording & Film Productions Limited | Information & communication | 1969 |
| Home Control Scotland Ltd | Arts & recreation | 2009 |
| Homezy Property Maintenance Limited | Construction | 2023 |
| HPP (Loanhead) Ltd | Wholesale & retail | 2018 |
| HPP Holdings Limited | Financial services | 2019 |
| Ibik Services Ltd | Professional & scientific | 2022 |
| Icon Fabrications Ltd. | Construction | 2011 |
| Illuminate Technology Limited | Information & communication | 2007 |
| Instant Publications Limited | Information & communication | 2002 |
| Integfinsol Ltd | Financial services | 2021 |
| Irvines Taxis Ltd. | Transport & logistics | 1999 |
| J Murdoch Wight Limited | Administrative & support | 1980 |
| J R Spray Limited | Wholesale & retail | 2023 |
| J&E Macgregor Ltd. | Construction | 2009 |
| Jaberu Recruitment Services Ltd | Administrative & support | 2011 |
| JACKSON247 Electrical Services Limited | Construction | 2020 |
| James Blair Joinery Ltd | Manufacturing | 2019 |
| JB & Sons Roofing Ltd | Construction | 2025 |
| JB Foods (Scotland) Ltd. | Wholesale & retail | 1976 |
| JD Central Properties Limited | Real estate | 2026 |
| JGM Fire and Security Limited | Administrative & support | 2024 |
| JM Couriers (Scotland) Limited | Transport & logistics | 2013 |
| John Barry Limited | Manufacturing | 1934 |
| John G. Mackintosh Limited | Construction | 2005 |
| K.I. Equity Limited | Real estate | 2024 |
| Kamil Cars Ltd | Wholesale & retail | 2024 |
| Kampast Limited | Financial services | 2012 |
| Kbmcd Property Limited | Real estate | 2025 |
| KC Joinery Edinburgh Ltd | Construction | 2016 |
| KC Property Solutions Edinburgh Ltd | Real estate | 2023 |
| Keystore ( Property ) Ltd | Real estate | 2019 |
| Kilgour Property Limited | Real estate | 2023 |
| Kilgour Property Management Ltd | Real estate | 2012 |
| Kilgour Wealth Management Limited | Financial services | 2010 |
| Kirkflow Limited | Administrative & support | 2000 |
| KIT and Caboodle Scotland Ltd | Wholesale & retail | 2017 |
| KM Public Protection Ltd | Professional & scientific | 2023 |
| KP & CA Pubs Ltd | Hospitality | 2024 |
| KRS Small Engineering Limited | Professional & scientific | 2026 |
| Ktrp Ltd | Extraterritorial | 2022 |
| Kurd Barber 24 Ltd | Other services | 2023 |
| La'Telve Limited | Hospitality | 2018 |
| Lasc Childcare Services Ltd | Health & social care | 1999 |
| Leslie Investments Ltd | Real estate | 2025 |
| Leslie Learning Ltd | Education | 2021 |
| Lime M&E Ltd | Construction | 2015 |
| Lionra Consultants Ltd | Information & communication | 2019 |
| Livingreen Design Limited | Manufacturing | 2011 |
| LLN Homecare Ltd | Construction | 2025 |
| Loanhead Autocare Ltd | Wholesale & retail | 2025 |
| Loanhead FNC Ltd | Hospitality | 2026 |
| Loanhead Motors Ltd | Wholesale & retail | 2022 |
| Loanhead Po-Newsagents Limited | Wholesale & retail | 2016 |
| Loanhead Restaurant Limited | Hospitality | 2011 |
| Loanhead Takeaway Limited | Hospitality | 2024 |
| Local Vehicle Rental Limited | Information & communication | 2009 |
| Lock Contracting Ltd | Construction | 2011 |
| Lock Shop (Security Systems) Limited (the) | Manufacturing | 1977 |
| Lonehead Bodyworks Limited | Wholesale & retail | 2025 |
| Lothian Heating Legacy Limited | Financial services | 2026 |
| Lothian Heating Services Limited | Manufacturing | 1985 |
| LSK Construction Management Limited | Professional & scientific | 2018 |
| LST Machining Ltd | Manufacturing | 2023 |
| Lunch to YOU Ltd. | Hospitality | 2016 |
| Lyons Media Limited | Information & communication | 2024 |
| M Crolla & Sons Limited | Extraterritorial | 2004 |
| M H Developments Scotland LLP | | 2006 |
| M Mckenzie Holdings Ltd. | Other services | 2023 |
| M Mckenzie Timber Ltd. | Other services | 2023 |
| M Mckenzie Waste Ltd. | Other services | 2010 |
| Macgordon Freight Ltd | Transport & logistics | 2014 |
| Mackai Holdings Limited | Real estate | 2018 |
| Macsween of Edinburgh Limited | Manufacturing | 1994 |
| Macsweenallan Food Group Ltd | Manufacturing | 2024 |
| Mactaggart Scott (Holdings) Limited | Financial services | 2007 |
| Mactaggart, Scott & Company Limited | Manufacturing | 1974 |
| MAD Scott's Outlet Ltd | Wholesale & retail | 2026 |
| Mail Master (Scotland) Ltd. | Administrative & support | 1998 |
| Mainland Property Edinburgh Ltd | Real estate | 2023 |
| Mainphase Electrical Ltd | Construction | 2023 |
| Malbet Services Ltd | Construction | 2022 |