| Gavin Ellis (Scotland) LLP | | 2016 |
| Gibby Groundworks Ltd | Construction | 2026 |
| Gibson Rentals & Motorhome Sales Ltd | Other services | 2025 |
| Gilded Silence Ltd | Information & communication | 2024 |
| GLA Spirits Ltd | Wholesale & retail | 2023 |
| Glaisnock FLY Limited | Hospitality | 2018 |
| Glaisnock Rail Solutions Ltd. | Construction | 2025 |
| Glenapp (Kilmarnock) LLP | | 2022 |
| Glencairn Estates Limited | Real estate | 2016 |
| Globaldatum Limited | Professional & scientific | 2005 |
| Gordon Sloan Farmers Ltd | Agriculture & fishing | 2017 |
| Gqrf Ltd | Information & communication | 2026 |
| Granny Grapes Limited | Households | 2019 |
| Grierson Electrical Ltd | Manufacturing | 2024 |
| Grierson Medico Legal Ltd | Health & social care | 2024 |
| Grierson Psychological Ltd | Health & social care | 2024 |
| H&H Venturez Ltd | Hospitality | 2025 |
| Haak Scaffolding Limited | Construction | 2023 |
| Half Full Developments Ltd. | Real estate | 2004 |
| Halfways Management Ltd | Wholesale & retail | 2025 |
| Handyman Ayrshire Limited | Administrative & support | 2013 |
| Harveys Healthcare (Scotland) Ltd | Health & social care | 2019 |
| Hasaan Lettings Ltd | Real estate | 2026 |
| HAT35 Limited | Professional & scientific | 2020 |
| Haughbank Ltd | Construction | 2023 |
| Hazel’S High Notes C.I.C. | Education | 2025 |
| HD Garage Limited | Wholesale & retail | 2025 |
| HE Ding Ltd | Hospitality | 2026 |
| Healthcare Plus Recruitment Limited | Administrative & support | 2016 |
| Hearth Place Stores Ltd | Wholesale & retail | 2025 |
| Height Solutions (Scotland) Ltd | Construction | 2013 |
| High Park Convenience Ltd | Wholesale & retail | 2024 |
| High Voltage Engineers Ltd | Manufacturing | 2011 |
| Hill Plant Hire Construction Ltd | Construction | 2025 |
| Hirondo Ltd | Administrative & support | 2016 |
| HO Optical Investments Ltd | Financial services | 2024 |
| Hole in the Walll Ltd | Hospitality | 2023 |
| Hollowpoint Games Ltd | Information & communication | 2025 |
| Hourglass Cafe Limited | Hospitality | 2019 |
| I & S Lock Service Limited | Administrative & support | 2023 |
| I AM Flowers Limited | Wholesale & retail | 2020 |
| IAN Nimmo LLP | | 2011 |
| Idilic Options Ltd | Health & social care | 2020 |
| Iglowup Ltd | Wholesale & retail | 2024 |
| Inspec (AYR) Ltd | Professional & scientific | 2021 |
| Inspec Fabrication Ltd | Administrative & support | 2025 |
| Islay Dog Rescue Ltd | Other services | 2023 |
| J'S Fitness Team Limited | Arts & recreation | 2014 |
| Jager Security Ltd | Administrative & support | 2019 |
| JAM Events Scotland Limited | Other services | 2015 |
| Jammin Jerk Ltd | Hospitality | 2023 |
| JCD Contracts Ltd | Water & waste | 2026 |
| JCD Drainage Solutions Ltd. | Water & waste | 2025 |
| Jgfmdigital Ltd | Professional & scientific | 2024 |
| JKM Engineering Services Limited | Construction | 2016 |
| Jmbp Property Management Ltd | Real estate | 2025 |
| JMS Properties Sanquhar Ltd | Real estate | 2024 |
| JOSE17 Ltd | Hospitality | 2025 |
| K & P Wilson Farming Limited | Agriculture & fishing | 2023 |
| K&H Scot Ltd | Wholesale & retail | 2025 |
| KCP Environmental Services Ltd | Water & waste | 2004 |
| KCP Industrial Services Ltd. | Real estate | 2011 |
| Kebab Plus Ltd | Hospitality | 2022 |
| Kerr and Smith (Cumnock) Limited | Wholesale & retail | 1987 |
| Kerr Glazing Limited | Construction | 2017 |
| Keystore Auchinleck Ltd | Wholesale & retail | 2025 |
| Kiesel Limited | Information & communication | 2026 |
| Kings Homes Limited | Construction | 1992 |
| KM Vehicle Sales Ltd | Wholesale & retail | 2026 |
| KNM Scotland Ltd | Construction | 2025 |
| Knox Property Ltd | Real estate | 2022 |
| KSD Joiners Limited | Construction | 2021 |
| Kyle Dickson & SON Ltd | Transport & logistics | 2025 |
| Landark Developments Ltd. | Administrative & support | 2005 |
| LB Scotland Limited | Construction | 2020 |
| LDC Scotland Limited | Manufacturing | 2012 |
| Lintmill Lodges Ltd | Hospitality | 2020 |
| Lloyd’S Kitchen Ltd | Hospitality | 2026 |
| Loanhead (Kilmarnock) LLP | | 2025 |
| Local Shop (Cumnock) Ltd | Wholesale & retail | 2026 |
| Loch Doon Caravan Club Limited | Other services | 2010 |
| Loch Luie Ltd | Energy | 2014 |
| Logangate Farm Eggs Limited | Agriculture & fishing | 2013 |
| Logimac Limited | Information & communication | 2004 |
| Lohmar & Co Ltd | Information & communication | 2025 |
| LOM Medicals Ltd | Health & social care | 2026 |
| Love Fabrication and Welding Ltd | Manufacturing | 2024 |
| LTR Management Group Ltd | Construction | 2022 |
| Lucky White Heather Ltd | Wholesale & retail | 2023 |
| Lujo Aviation Ltd | Extraterritorial | 2022 |
| M & L Enterprises Scotland Ltd | Arts & recreation | 2017 |
| M 1 Kebabs Limited | Hospitality | 2014 |
| M E K Plant Limited | Construction | 2018 |
| M&M Bathroom Solutions Ltd | Construction | 2025 |
| M.A.B Kitchen Ltd | Hospitality | 2023 |
| Malaki Limited | Transport & logistics | 2022 |
| Malcolm Boyd (Scotland) Ltd | Professional & scientific | 2022 |
| Malcolm Elliot Stores Limited | Wholesale & retail | 2007 |
| Maneight Farm Lodgings Ltd | Hospitality | 2025 |
| Mani Developments Ltd | Real estate | 2025 |