| Firm Contracts Limited | Construction | 2014 |
| Flodabay Farm Limited | Hospitality | 2020 |
| FLY by Song Limited | Information & communication | 2017 |
| G D Martin (Builders) Ltd | Construction | 2015 |
| Gatliff Hebridean Hostels Trust | Hospitality | 1988 |
| GCS Stornoway Ltd | Construction | 2022 |
| Getjacked Limited | Education | 2024 |
| GFF Catering Ltd | Hospitality | 2025 |
| GFF Properties Ltd | Real estate | 2025 |
| Gillival Limited | Wholesale & retail | 2014 |
| Golden Ocean Stornoway Ltd | Hospitality | 2018 |
| Gordon Diesel Services Limited | Wholesale & retail | 1979 |
| Greenspace Live Limited | Information & communication | 2008 |
| Grey TIE Deer Studios Ltd | Information & communication | 2021 |
| Grillburger Frozen Foods Limited | Wholesale & retail | 1972 |
| Grillburger Holdings Limited | Wholesale & retail | 2019 |
| Harrier Protection Group Ltd | Administrative & support | 2025 |
| Harris | Manufacturing | 1990 |
| Harris Textiles | Manufacturing | 1988 |
| Harris Tweed | Manufacturing | 1984 |
| Harris Tweeds | Manufacturing | 1988 |
| Hebco Hebrides Ltd | Construction | 2021 |
| Hebco Homes Ltd | Real estate | 2021 |
| Hebdrone Limited | Professional & scientific | 2016 |
| Hebholidays Limited | Information & communication | 2018 |
| Hebridean Adventures Ltd | Administrative & support | 2018 |
| Hebridean Bakehouse Ltd | Manufacturing | 2024 |
| Hebridean Charcuterie From Croft NO.9 Ltd | Manufacturing | 2019 |
| Hebridean Hire Limited | Extraterritorial | 2014 |
| Hebridean Livestock Marketing Company Limited | Agriculture & fishing | 1985 |
| Hebridean Luxe Limited | Hospitality | 2025 |
| Hebridean Offshore Ltd | Professional & scientific | 2011 |
| Hebridean Plumbing and Heating Ltd | Construction | 2026 |
| Hebridean Solutions Ltd | Administrative & support | 2014 |
| Hebridean Spa Limited | Wholesale & retail | 2011 |
| Hebridean Tea Store Limited | Wholesale & retail | 2021 |
| Hebridean Transport Ltd | Transport & logistics | 2010 |
| Hebrides Community Hydrogen Ltd | Extraterritorial | 2021 |
| Hebrides Energy Community Interest Company | Energy | 2015 |
| Hebrides Haulage Limited | Transport & logistics | 1995 |
| Hebstream Limited | Information & communication | 2016 |
| Highland Office Furniture Limited | Professional & scientific | 2024 |
| Holm Appliance Ltd | Wholesale & retail | 2020 |
| Holm Appliance Repair Ltd | Construction | 2015 |
| Holm Farm Holdings Ltd | Financial services | 2026 |
| Holm Farm Stornoway Ltd | Agriculture & fishing | 2026 |
| Home and Floors Limited | Wholesale & retail | 2016 |
| Hotel Hebrides Ltd | Hospitality | 2013 |
| HS Supplies (Scotland) Limited | Other services | 2017 |
| HS1 Accountancy Ltd | Financial services | 2025 |
| Hughson Recovery Services Limited | Wholesale & retail | 2026 |
| Hughson Vehicle Services Limited | Wholesale & retail | 2019 |
| HW Island Star Limited | Hospitality | 2017 |
| Hyhebrides Ltd | Extraterritorial | 2021 |
| IAN Macfarlane Joiners Ltd | Construction | 2017 |
| Intermedia Services (Stornoway) Ltd | Information & communication | 2011 |
| Inverness Office Furniture Limited | Professional & scientific | 2024 |
| Iolaire Centre Ltd | Other services | 2018 |
| Ishga Ltd | Agriculture & fishing | 2015 |
| Island Car Hire Limited | Administrative & support | 2022 |
| Island Secure Ltd | Administrative & support | 2025 |
| Isle of Harris Car Hire Ltd | Extraterritorial | 2021 |
| Isle of Lewis Distillers Limited | Manufacturing | 2018 |
| Isle of Lewis GIN Limited | Manufacturing | 2022 |
| Istanbul Stornoway Ltd | Hospitality | 2018 |
| JJB Holdings Limited | Financial services | 2026 |
| John Macdonald Electrical Services Limited | Manufacturing | 2010 |
| John Murray & Co Limited | Construction | 2009 |
| Jrfc Properties Ltd | Hospitality | 2014 |
| Just Quietly Ltd | Professional & scientific | 2024 |
| K.J. Macdonald Limited | Wholesale & retail | 1960 |
| Kaylana Fishing Limited | Agriculture & fishing | 2018 |
| KEN Macdonald & Co Limited | Real estate | 2012 |
| Kenman Holdings (Stornoway) Limited | Professional & scientific | 2010 |
| Kevin Macneill Consultancy Limited | Professional & scientific | 2017 |
| Knock and Swordale Community Company | Other services | 2014 |
| Kopi Java Ltd | Hospitality | 2016 |
| KS Services SY Limited | Professional & scientific | 2011 |
| Kyol Ltd | Mining & quarrying | 2024 |
| LA Balena Restaurant Ltd | Hospitality | 2022 |
| Laxdale Newmarket & Coulregrein Development Ltd | Other services | 2019 |
| Lewis & Harris Tweed Company Limited | Manufacturing | 1992 |
| Lewis Car Rentals Ltd | Administrative & support | 2022 |
| Load Lifters Stornoway Ltd | Administrative & support | 2024 |
| Loch Alba Group Ltd | Agriculture & fishing | 2024 |
| Loch Alba Trout Ltd | Agriculture & fishing | 2008 |
| Loch Ness Candle Company Limited | Extraterritorial | 2017 |
| Lochside Arena | Arts & recreation | 2008 |
| Logos Scotland | Other services | 2020 |
| Long Island Catering Ltd | Hospitality | 2016 |
| Loomshed Deli Ltd | Extraterritorial | 2016 |
| M&W (Stornoway) Limited | Real estate | 2018 |
| M-Tek Steelworks Limited | Construction | 2023 |
| MAC Networks Ltd | Information & communication | 2025 |
| Macaulay College C.I.C. | Education | 2010 |
| Macdonald Maciver & Company Limited | Professional & scientific | 2008 |
| Macfarlane Electrical Limited | Construction | 2010 |
| Maciver Business Development Services Limited | Professional & scientific | 2015 |
| Maciver Distribution Limited | Wholesale & retail | 2022 |
| Maciver Inspection Services Ltd | Professional & scientific | 2018 |